{"id":90474,"date":"2020-05-03T00:17:32","date_gmt":"2020-05-02T16:17:32","guid":{"rendered":"http:\/\/4563.org\/?p=90474"},"modified":"2020-05-19T13:33:03","modified_gmt":"2020-05-19T05:33:03","slug":"%e8%b8%a9%e5%9d%91%e8%ae%b0%ef%bc%9a-go-%e6%9c%8d%e5%8a%a1%e5%86%85%e5%ad%98%e6%9a%b4%e6%b6%a8","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=90474","title":{"rendered":"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <span><i><\/i> 19<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u6211\u53d1\u73b0\u6700\u8fd1\u6bcf\u7bc7\u6587\u7ae0\u90fd\u662f \u6536\u85cf\u6570 &lt; \u56de\u590d\u6570\uff0c\u5e0c\u671b\u5404\u4f4d\u53ef\u4ee5\u591a\u8ba8\u8bba\uff0c\u6211\u89c9\u5f97\u6709\u65f6\u63d0\u51fa\u95ee\u9898\u6bd4\u89e3\u51b3\u95ee\u9898\u66f4\u91cd\u8981~<\/p>\n<p>\u8fd9\u5468\u6362\u6362\u53e3\u5473\uff0c\u8bb0\u5f55\u4e00\u4e0b\u53bb\u5e74\u8e29\u7684\u4e00\u4e2a\u5927\u5751\u3002<\/p>\n<h1>\u8d77<\/h1>\n<p> <\/p>\n<p>\u5927\u6982\u662f\u53bb\u5e74 8 \u6708\u4efd\uff0c\u90a3\u4f1a\u513f\u6211\u4eec\u8fd8\u5728\u7528\u7740 64GB \u7684\u201c\u5c0f\u5185\u5b58\u201d\u673a\u5668\u3002<\/p>\n<p>\u7531\u4e8e\u5347\u7ea7\u4e00\u6b21\u7248\u672c\u9700\u8981\u8f83\u957f\u7684\u65f6\u95f4\uff08 1~2 \u5c0f\u65f6\uff09\uff0c\u56e0\u6b64\u6211\u4eec\u6bcf\u5929\u53ea\u53d1\u4e00\u6b21\u8f66\uff0c\u7531\u503c\u73ed\u7684\u540c\u5b66\u8d1f\u8d23\uff0c\u53d1\u5e03\u6240\u6709\u5df2 merge \u7684 commit \u3002<\/p>\n<p>\u5f53\u5929\u8d1f\u8d23\u503c\u73ed\u7684\u6211\u6b63\u5f00\u7740\u8f66\uff0c\u7a81\u7136\u6536\u5230 Bytedance-System \u7684\u593a\u547d\u8fde\u73af call\uff0c\u6253\u5f00 Lark \u4e00\u770b\uff1a<\/p>\n<blockquote>\n<p>[\u00a0\u89c4\u5219\u00a0]\uff1a\u673a\u5668\u8d44\u6e90\u62a5\u8b66 [\u00a0\u62a5\u8b66\u4e0a\u4e0b\u6587\u00a0]\uff1a \u00a0host: 10.x.x.x \u5185\u5b58\u4f7f\u7528\u7387:\u00a00.944 [\u00a0\u62a5\u8b66\u65b9\u5f0f\u00a0]\uff1a\u7535\u8bdd&amp;Lark<\/p>\n<\/blockquote>\n<p>\u6253\u5f00 ganglia \u4e00\u770b\uff0c\u66f4\u4ee4\u4eba\u5bb3\u6015\uff1a\u597d\u591a\u673a\u5668\u7684\u5185\u5b58\u90fd\u5728\u66b4\u6da8<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f6272d01.jpg\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f67dc1d7.png\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<h1>\u627f<\/h1>\n<p> <\/p>\n<p>\u8fd9\u770b\u8d77\u6765\u50cf\u662f\u5178\u578b\u7684\u5185\u5b58\u6cc4\u6f0f case\uff0c\u90a3\u5c31\u6309\u6b63\u5e38\u5957\u8def\u6392\u67e5\uff1a<\/p>\n<p>\u4e00\u65b9\u9762\uff0c\u901a\u77e5\u8f66\u4e0a\u7684\u540c\u5b66 review \u81ea\u5df1\u7684 commit\uff0c\u770b\u770b\u662f\u5426\u6709\u4ee3\u7801\u7591\u4f3c\u5185\u5b58\u6cc4\u6f0f\uff0c\u6216\u8005\u65b0\u589e\u5927\u91cf\u5185\u5b58\u5360\u7528\u7684\u903b\u8f91\uff1b<\/p>\n<p>\u53e6\u4e00\u65b9\u9762\uff0c\u6211\u4eec\u7684 go \u670d\u52a1\u90fd\u9ed8\u8ba4\u5f00\u542f\u4e86 pprof\uff0c\u4e8e\u662f\u627e\u4e86\u4e00\u53f0\u673a\u5668\u6062\u590d\u5230\u539f\u7248\u672c\uff0c\u7528\u6765\u5bf9\u6bd4\u5185\u5b58\u5360\u7528\u60c5\u51b5\uff1a<\/p>\n<pre><code>$ go tool pprof http:\/\/$IP:$PORT\/debug\/pprof\/heap  (pprof) top 10 Showing top 10 nodes out of 125       flat  flat%   sum%        cum   cum%  2925.01MB 17.93% 17.93%  3262.03MB 19.99%  **[\u6b64\u5904\u6253\u7801]**  2384.37MB 14.61% 32.54%  4817.78MB 29.52%  **[\u6b64\u5904\u6253\u7801]**  2142.40MB 13.13% 45.67%  2142.40MB 13.13%  **[\u6b64\u5904\u6253\u7801]**  ... <\/code><\/pre>\n<p>\u5c31\u8fd9\u6837\uff0c\u4e00\u987f\u64cd\u4f5c\u731b\u5982\u864e\uff0c~~\u6da8\u8dcc\u5168\u9760 Te \u6717\u666e~~\uff0c\u6700\u7ec8\u7ed3\u679c\u662f\uff0c\u4e00\u65b9\u9762\u6ca1\u770b\u51fa\u5565\u95ee\u9898\uff0c\u53e6\u4e00\u65b9\u9762\u4e5f\u6ca1\u770b\u51fa\u5565\u95ee\u9898\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f6b6e720.jpg\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<p>\u6b63\u5728\u4e00\u7b79\u83ab\u5c55\u3001\u51c6\u5907\u56de\u6eda\u4e4b\u9645\uff0c\u5185\u5b58\u5b83\u81ea\u5df1\u7a33\u4e86\uff1a<\/p>\n<p>\u867d\u7136\u5360\u7528\u7387\u4ecd\u7136\u5f88\u9ad8\uff0c\u4f46\u662f\u6ca1\u6709\u7ee7\u7eed\u4e0a\u5347\uff0c\u4e5f\u6ca1\u6709\u51fa\u73b0 OOM \u7684\u60c5\u51b5<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f6e58f98.png\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<h1>\u8f6c<\/h1>\n<p> <\/p>\n<p>\u6392\u67e5\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u8fd8\u53d1\u73b0\u4e00\u4e2a\u73b0\u8c61\uff1a\u5e76\u4e0d\u662f\u6240\u6709\u673a\u5668\u7684\u5185\u5b58\u90fd\u6da8\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f719fe38.png\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<p>\u8fd9\u4e9b\u673a\u5668\u7684\u786c\u4ef6\u90fd\u662f\u4e00\u81f4\u7684\uff0c\u4f46\u662f\u7528 uname -a \u53ef\u4ee5\u770b\u5230\uff0c\u5185\u5b58\u5f02\u5e38\u7684\u673a\u5668\u7248\u672c\u662f 4.14 \uff0c\u6bd4\u5185\u5b58\u6b63\u5e38\u673a\u5668\u7684 3.16 \u9ad8\u5f88\u591a\uff1a<\/p>\n<pre><code>&lt;\u5f02\u5e38\u673a\u5668&gt;$\u00a0uname\u00a0-a\u00a0# Linux 4.14.81.xxx ... <\/code><\/pre>\n<pre><code>&lt;\u6b63\u5e38\u673a\u5668&gt;$\u00a0uname\u00a0-a `Linux 3.16.104.xxx ...` <\/code><\/pre>\n<p>\u8bf4\u660e\u4e24\u4e2a kernel \u7248\u672c\u7684\u67d0\u4e9b\u5dee\u522b\u662f\u539f\u56e0\u4e4b\u4e00\uff0c\u4f46\u5e76\u4e0d\u8db3\u4ee5\u89e3\u91ca\u524d\u8ff0\u95ee\u9898\uff1a\u6bd5\u7adf\u53d1\u8f66\u4e4b\u524d\u4e5f\u662f\u8fd9\u4e9b\u673a\u5668\u3002<\/p>\n<p>\u6b64\u5916\uff0cY \u540c\u5b66\u63d0\u5230\uff0c\u4ed6\u628a\u7f16\u8bd1\u670d\u52a1\u6307\u5b9a\u7684 go \u7248\u672c\u4ece 1.10 \u5347\u7ea7\u5230\u4e86 1.12 \u3002<\/p>\n<p>\u5f53\u65f6 go 1.12 \u5df2\u7ecf\u53d1\u5e03\u534a\u5e74\uff0cY \u540c\u5b66\u5728\u5f00\u53d1\u73af\u5883\u7f16\u8bd1\u548c\u8fd0\u884c\u6b63\u5e38\uff0c\u5728\u7ebf\u4e0a\u7070\u5ea6\u673a\u5668\u4e5f\u8fd0\u884c\u4e86\u4e00\u6bb5\u65f6\u95f4\uff0c\u770b\u7740\u6ca1\u6bdb\u75c5\uff0c\u6240\u4ee5\u5c31\u51b3\u5b9a\u5347\u7ea7\u4e86\u3002<\/p>\n<p>\u65e2\u7136\u5176\u4ed6\u53ef\u80fd\u6027\u90fd\u6392\u67e5\u8fc7\u4e86\uff0c\u90a3\u5c31\u5148\u964d\u56de\u6765\u770b\u770b\u5427\u3002<\/p>\n<p>\u6211\u4eec\u7528 go 1.10 \u91cd\u65b0\u7f16\u8bd1\u4e86 master\uff0c\u53d1\u5e03\u5230\u51e0\u53f0\u5185\u5b58\u5f02\u5e38\u7684\u673a\u5668\u4e0a\u3002<\/p>\n<p>\u4e8e\u662f\u95ee\u9898\u89e3\u51b3\u4e86\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f766e7f7.gif\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f79aa01c.jpg\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<h1>\u5408<\/h1>\n<p> <\/p>\n<p>\u4e3a\u4ec0\u4e48 go 1.12 \u4f1a\u5bfc\u81f4\u5185\u5b58\u5f02\u5e38\u4e0a\u6da8\u5462\uff1f<\/p>\n<p>\u67e5\u67e5\u00a0 Go 1.12 Release Notes\uff0c\u53ef\u4ee5\u627e\u5230\u4e00\u70b9\u7ebf\u7d22\uff1a<\/p>\n<blockquote>\n<p><strong>Runtime<\/strong>\u00a0 Go\u00a01.12\u00a0significantly\u00a0improves\u00a0the\u00a0performance\u00a0of\u00a0sweeping\u00a0when\u00a0a\u00a0large\u00a0fraction\u00a0of\u00a0the\u00a0heap\u00a0remains\u00a0live.\u00a0This\u00a0reduces\u00a0allocation\u00a0latency\u00a0immediately\u00a0following\u00a0a\u00a0garbage\u00a0collection.<\/p>\n<p>(\u4e2d\u95f4\u7701\u7565 2 \u6bb5\u4e0d\u592a\u76f8\u5173\u7684\u5185\u5bb9) On\u00a0Linux,\u00a0the\u00a0runtime\u00a0now\u00a0uses\u00a0MADV_FREE\u00a0to\u00a0release\u00a0unused\u00a0memory.\u00a0This\u00a0is\u00a0more\u00a0efficient\u00a0but\u00a0may\u00a0result\u00a0in\u00a0higher\u00a0reported\u00a0RSS.\u00a0The\u00a0kernel\u00a0will\u00a0reclaim\u00a0the\u00a0unused\u00a0data\u00a0when\u00a0it\u00a0is\u00a0needed.<\/p>\n<p>golang.org\/doc\/go1.12<\/p>\n<\/blockquote>\n<p>\u7ffb\u8bd1\u4e00\u4e0b\uff1a<\/p>\n<blockquote>\n<p>\u5728\u5806\u5185\u5b58\u5927\u90e8\u5206\u6d3b\u8dc3\u7684\u60c5\u51b5\u4e0b\uff0cgo 1.12 \u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6e05\u7406\u6027\u80fd\uff0c\u964d\u4f4e [\u7d27\u968f\u67d0\u6b21 gc \u7684\u5185\u5b58\u5206\u914d] \u7684\u5ef6\u8fdf\u3002<\/p>\n<p>\u5728 Linux \u4e0a\uff0cGo Runtime \u73b0\u5728\u4f7f\u7528 MADV_FREE \u6765\u91ca\u653e\u672a\u4f7f\u7528\u7684\u5185\u5b58\u3002\u8fd9\u6837\u6548\u7387\u66f4\u9ad8\uff0c\u4f46\u662f<strong>\u53ef\u80fd\u5bfc\u81f4\u66f4\u9ad8\u7684 RSS<\/strong>\uff1b\u5185\u6838\u4f1a\u5728\u9700\u8981\u65f6\u56de\u6536\u8fd9\u4e9b\u5185\u5b58\u3002<\/p>\n<\/blockquote>\n<p>\u8fd9\u4e24\u6bb5\u8bdd\u6bcf\u4e2a\u5b57\u90fd\u8ba4\u8bc6\uff0c\u5408\u5230\u4e00\u8d77\u5c31\u2026\u2026<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f7ec8155.jpg\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<p>\u4e0d\u8fc7\u90fd\u5199\u5230\u8fd9\u4e86\uff0c\u6211\u8fd8\u662f\u8bd5\u7740\u89e3\u91ca\u4e0b\uff0c\u501f\u7528 C \u8bed\u8a00\u7684 malloc \u548c free \uff08 Go \u7684\u5185\u5b58\u5206\u914d\u903b\u8f91\u4e5f\u7c7b\u4f3c\uff09\uff1a<\/p>\n<ul>\n<li><strong>\u5185\u5b58\u5206\u914d<\/strong><\/li>\n<\/ul>\n<p>\u5728 Linux \u4e0b\uff0cmalloc \u9700\u8981\u5728\u5176\u7ba1\u7406\u7684\u5185\u5b58\u4e0d\u591f\u7528\u65f6\uff0c\u8c03\u7528 brk \u6216 mmap \u7cfb\u7edf\u8c03\u7528\uff08 syscall \uff09\u627e\u5185\u6838\u6269\u5145\u5176\u53ef\u7528\u5730\u5740\u7a7a\u95f4\uff0c\u8fd9\u4e9b\u5730\u5740\u7a7a\u95f4\u5bf9\u5e94\u524d\u8ff0\u7684\u5806\u5185\u5b58\uff08 heap \uff09\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u662f\u201c<strong>\u6269\u5145\u5730\u5740\u7a7a\u95f4<\/strong>\u201d\uff1a\u56e0\u4e3a\u6709\u4e9b\u5730\u5740\u7a7a\u95f4\u53ef\u80fd\u4e0d\u4f1a\u7acb\u5373\u7528\u5230\uff0c\u751a\u81f3\u53ef\u80fd\u6c38\u8fdc\u4e0d\u4f1a\u7528\u5230\uff0c\u4e3a\u4e86\u63d0\u9ad8\u6548\u7387\uff0c\u5185\u6838\u5e76\u4e0d\u4f1a\u7acb\u523b\u7ed9\u8fdb\u7a0b\u5206\u914d\u8fd9\u4e9b\u5185\u5b58\uff0c\u800c\u53ea\u662f\u5728\u8fdb\u7a0b\u7684<strong>\u9875\u8868<\/strong>\u4e2d\u505a\u597d\u6807\u8bb0\uff08\u53ef\u7528\u3001\u4f46\u672a\u5206\u914d\uff09\u3002<\/p>\n<p>\u6ce8\uff1aOS \u7528\u9875\u8868\u6765\u7ba1\u7406\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\uff0c\u5176\u4e2d\u8bb0\u5f55\u4e86\u9875\u7684\u72b6\u6001\u3001\u5bf9\u5e94\u7684\u7269\u7406\u9875\u5730\u5740\u7b49\u4fe1\u606f\uff1b\u4e00\u9875\u901a\u5e38\u662f 4KB \u3002<\/p>\n<p>\u5f53\u8fdb\u7a0b\u8bfb \/\u5199\u5c1a\u672a\u5206\u914d\u7684\u9875\u9762\u65f6\uff0c\u4f1a\u89e6\u53d1\u4e00\u4e2a\u7f3a\u9875\u4e2d\u65ad\uff08 page fault \uff09\uff0c\u8fd9\u65f6\u5185\u6838\u624d\u4f1a\u5206\u914d\u9875\u9762\uff0c\u5728\u9875\u8868\u4e2d\u6807\u8bb0\u4e3a\u5df2\u5206\u914d\uff0c\u7136\u540e\u518d\u6062\u590d\u8fdb\u7a0b\u7684\u6267\u884c\uff08\u5728\u8fdb\u7a0b\u770b\u6765\u4f3c\u4e4e\u4ec0\u4e48\u90fd\u6ca1\u53d1\u751f\uff09\u3002<\/p>\n<p>\u6ce8\uff1a\u7c7b\u4f3c\u7684\u7b56\u7565\u8fd8\u7528\u5728\u5f88\u591a\u5176\u4ed6\u5730\u65b9\uff0c\u5305\u62ec\u88ab swap \u5230\u78c1\u76d8\u7684\u9875\u9762\uff08\u201c\u865a\u62df\u5185\u5b58\u201d\uff09\uff0c\u4ee5\u53ca fork \u540e\u7684 cow \u673a\u5236\u3002<\/p>\n<ul>\n<li><strong>\u5185\u5b58\u56de\u6536<\/strong><\/li>\n<\/ul>\n<p>\u5f53\u6211\u4eec\u4e0d\u7528\u5185\u5b58\u65f6\uff0c\u8c03\u7528 free(ptr)\u00a0\u91ca\u653e\u5185\u5b58\u3002<\/p>\n<p>\u5bf9\u5e94\u7684\uff0c\u5f53 free \u89c9\u5f97\u6709\u5fc5\u8981\u7684\u65f6\u5019\uff0c\u4f1a\u8c03\u7528 sbrk \u6216 munmap \u7f29\u5c0f\u5730\u5740\u7a7a\u95f4\uff1a\u8fd9\u662f\u9488\u5bf9\u4e00\u6574\u6bb5\u5730\u5740\u7a7a\u95f4\u90fd\u7a7a\u51fa\u6765\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u4f46\u66f4\u591a\u7684\u65f6\u5019\uff0cfree \u53ef\u80fd\u53ea\u91ca\u653e\u4e86\u5176\u4e2d\u4e00\u90e8\u5206\u5185\u5bb9\uff08\u4f8b\u5982\u8fde\u7eed\u7684 ABCDE\u00a05 \u4e2a\u9875\u9762\u4e2d\u53ea\u91ca\u653e\u4e86 C \u548c D \uff09\uff0c\u5e76\u4e0d\u9700\u8981\uff08\u4e5f\u4e0d\u80fd\uff09\u628a\u5730\u5740\u7a7a\u95f4\u7f29\u5c0f<\/p>\n<p>\u8fd9\u65f6\u6700\u7b80\u5355\u7684\u7b56\u7565\u662f\uff1a\u4ec0\u4e48\u4e5f\u4e0d\u5e72\u3002<\/p>\n<p>\u4f46\u8fd9\u79cd\u5360\u7740\u8305\u5751\u4e0d\u62c9\u5c4e\u7684\u884c\u4e3a\uff0c\u4f1a\u5bfc\u81f4\u5185\u6838\u65e0\u6cd5\u5c06\u7a7a\u95f2\u9875\u9762\u5206\u914d\u7ed9\u5176\u4ed6\u8fdb\u7a0b\u3002<\/p>\n<p>\u6240\u4ee5 free \u53ef\u4ee5\u901a\u8fc7 madvise \u544a\u8bc9\u5185\u5b58\u201c\u8fd9\u4e00\u6bb5\u6211\u4e0d\u7528\u4e86\u201d\u3002<\/p>\n<ul>\n<li><strong>madvise<\/strong><\/li>\n<\/ul>\n<p>\u901a\u8fc7\u00a0madvise(addr, length, advise)\u00a0\u8fd9\u4e2a\u7cfb\u7edf\u8c03\u7528\uff0c\u544a\u8bc9\u5185\u6838\u53ef\u4ee5\u5982\u4f55\u5904\u7406\u4ece addr \u5f00\u59cb\u7684 length \u5b57\u8282\u3002<\/p>\n<p>\u5728 Linux Kernel 4.5 \u4e4b\u524d\uff0c\u53ea\u652f\u6301 MADV_DONTNEED \uff08\u4e0a\u9762\u63d0\u5230 go 1.11 \u53ca\u4ee5\u524d\u7684\u9ed8\u8ba4 advise \uff09\uff0c\u5185\u6838\u4f1a\u5728\u8fdb\u7a0b\u7684\u9875\u8868\u4e2d\u5c06\u8fd9\u4e9b\u9875\u6807\u8bb0\u4e3a\u201c\u672a\u5206\u914d\u201d\uff0c\u4ece\u800c\u8fdb\u7a0b\u7684 RSS \u5c31\u4f1a\u53d8\u5c0f\u3002OS \u540e\u7eed\u53ef\u4ee5\u5c06\u5bf9\u5e94\u7684\u7269\u7406\u9875\u5206\u914d\u7ed9\u5176\u4ed6\u8fdb\u7a0b\u3002<\/p>\n<p>\u6ce8\uff1aRSS \u662f Resident Set Size \uff08\u5e38\u9a7b\u5185\u5b58\u96c6\uff09\u7684\u7f29\u5199\uff0c\u662f\u8fdb\u7a0b\u5728\u7269\u7406\u5185\u5b58\u4e2d\u5b9e\u9645\u5360\u7528\u7684\u5185\u5b58\u5927\u5c0f\uff08\u4e5f\u5c31\u662f\u9875\u8868\u4e2d\u5b9e\u9645\u5206\u914d\u3001\u4e14\u672a\u88ab\u6362\u51fa\u5230 swap \u7684\u5185\u5b58\u9875\u603b\u5927\u5c0f\uff09\u3002\u6211\u4eec\u5728 ps \u547d\u4ee4\u4e2d\u4f1a\u770b\u5230\u5b83\uff0c\u5728 top \u547d\u4ee4\u91cc\u5bf9\u5e94\u7684\u662f REZ \uff08 man top \u6709\u66f4\u591a\u60ca\u559c\uff09\u3002<\/p>\n<p>\u88ab madvise \u6807\u8bb0\u7684\u8fd9\u6bb5\u5730\u5740\u7a7a\u95f4\uff0c\u8be5\u8fdb\u7a0b\u4ecd\u7136\u53ef\u4ee5\u8bbf\u95ee\uff08\u4e0d\u4f1a segment fault \uff09\uff0c\u4f46\u662f\u5f53\u8bfb \/\u5199\u5176\u4e2d\u67d0\u4e00\u9875\u65f6\uff08\u4f8b\u5982 malloc \u5206\u914d\u65b0\u7684\u5185\u5b58\uff0c\u6216 Go \u521b\u5efa\u65b0\u7684\u5bf9\u8c61\uff09\uff0c\u5185\u6838\u4f1a\u00a0<strong>\u91cd\u65b0\u5206\u914d<\/strong> \u4e00\u4e2a <strong>\u7528\u5168 0 \u586b\u5145<\/strong> \u7684\u65b0\u9875\u9762\u3002<\/p>\n<p>\u5982\u679c\u8fdb\u7a0b\u5927\u91cf\u8bfb\u5199\u8fd9\u6bb5\u5730\u5740\u7a7a\u95f4\uff08\u5373 release notes \u8bf4\u7684 \u201ca large fraction of the heap remains live\u201d\uff0c\u5806\u7a7a\u95f4\u5927\u90e8\u5206\u6d3b\u8dc3\uff09\uff0c\u5185\u6838\u9700\u8981\u9891\u7e41\u5206\u914d\u9875\u9762\u3001\u5e76\u4e14\u5c06\u9875\u9762\u5185\u5bb9\u6e05\u96f6\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u5206\u914d\u7684\u5ef6\u8fdf\u53d8\u9ad8\u3002<\/p>\n<ul>\n<li><strong>go 1.12 \u7684\u6539\u8fdb<\/strong><\/li>\n<\/ul>\n<p>\u4ece kernel 4.5 \u5f00\u59cb\uff0cLinux \u652f\u6301\u4e86 MADV_FREE \uff08 go 1.12 \u9ed8\u8ba4\u4f7f\u7528\u7684 advise \uff09\uff0c\u5185\u6838\u53ea\u4f1a\u5728\u9875\u8868\u4e2d\u5c06\u8fd9\u4e9b\u8fdb\u7a0b\u9875\u9762\u6807\u8bb0\u4e3a\u53ef\u56de\u6536\uff0c\u5728\u9700\u8981\u7684\u65f6\u5019\u624d\u56de\u6536\u8fd9\u4e9b\u9875\u9762\u3002<\/p>\n<p>\u5982\u679c\u8d76\u5728\u5185\u6838\u56de\u6536\u524d\uff0c\u8fdb\u7a0b\u8bfb\u5199\u4e86\u8fd9\u6bb5\u7a7a\u95f4\uff0c\u5c31\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528\u539f\u9875\u9762\uff0c\u76f8\u6bd4 DONTNEED \u6a21\u5f0f\uff0c\u51cf\u5c11\u4e86\u91cd\u65b0\u5206\u914d\u5185\u5b58\u3001\u6570\u636e\u6e05\u96f6\u6240\u9700\u7684\u65f6\u95f4\uff0c\u8fd9\u5bf9\u5e94\u00a0Release Notes \u91cc\u5199\u7684 &#8220;reduces allocation latency immediately following a garbage collection&#8221;\uff0c\u56e0\u4e3a\u5728 gc \u4ee5\u540e\u7acb\u5373\u5206\u914d\u5185\u5b58\uff0c\u5bf9\u5e94\u7684\u9875\u9762\u5927\u6982\u7387\u8fd8\u6ca1\u6709\u88ab OS \u56de\u6536\u3002<\/p>\n<p>\u4f46\u5176\u4ee3\u4ef7\u662f &#8220;may result in higher reported RSS&#8221;\uff0c\u7531\u4e8e\u9875\u9762\u6ca1\u6709\u88ab OS \u56de\u6536\uff0c\u4ecd\u88ab\u8ba1\u5165\u8fdb\u7a0b\u7684 RSS\uff0c\u56e0\u6b64\u770b\u8d77\u6765\u8fdb\u7a0b\u7684\u5185\u5b58\u5360\u7528\u4f1a\u6bd4\u8f83\u5927\u3002<\/p>\n<p>\u5dee\u4e0d\u591a\u5c31\u89e3\u91ca\u5230\u8fd9\u91cc\u5427\uff0c\u5efa\u8bae\u518d\u91cd\u8bfb\u4e00\u904d\uff1a<\/p>\n<blockquote>\n<p>\u5728\u5806\u5185\u5b58\u5927\u90e8\u5206\u6d3b\u8dc3\u7684\u60c5\u51b5\u4e0b\uff0cgo 1.12 \u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6e05\u7406\u6027\u80fd\uff0c\u964d\u4f4e [\u7d27\u968f\u67d0\u6b21 gc \u7684\u5185\u5b58\u5206\u914d] \u7684\u5ef6\u8fdf\u3002<\/p>\n<p>\u5728 Linux \u4e0a\uff0cGo Runtime \u73b0\u5728\u4f7f\u7528 MADV_FREE \u6765\u91ca\u653e\u672a\u4f7f\u7528\u7684\u5185\u5b58\u3002\u8fd9\u6837\u6548\u7387\u66f4\u9ad8\uff0c\u4f46\u662f<strong>\u53ef\u80fd\u5bfc\u81f4\u66f4\u9ad8\u7684 RSS<\/strong>\uff1b\u5185\u6838\u4f1a\u5728\u9700\u8981\u65f6\u56de\u6536\u8fd9\u4e9b\u5185\u5b58\u3002<\/p>\n<\/blockquote>\n<p>\u5982\u679c\u4ecd\u7136\u6709\u4e0d\u7406\u89e3\u7684\u5730\u65b9\uff0c\u53ef\u4ee5\u7559\u8a00\u63a2\u8ba8\u3002<\/p>\n<p>\u5bf9\u66f4\u591a\u7ec6\u8282\u611f\u5174\u8da3\u7684\u540c\u5b66\uff0c\u63a8\u8350\u9605\u8bfb\u300a What Every Programmer Should Know About Memory \u300b\uff08 TL; DR \uff09\uff0c\u6216\u8005\u5b83\u7684\u7cbe\u7b80\u7248\u300a What a C programmer should know about memory \u300b\uff08\u6587\u672b\u53c2\u8003\u94fe\u63a5\uff09\u3002<\/p>\n<h1>\u8f6c\u00b2<\/h1>\n<p> <\/p>\n<p>\u81f3\u6b64\u524d\u8ff0\u5185\u5b58\u66b4\u6da8\u95ee\u9898\u4e5f\u7b97\u662f\u6536\u5c3e\u4e86\uff0c\u4f46\u00a0Y \u540c\u5b66\u4ecd\u7136\u6709\u70b9\u4e0d\u653e\u5fc3\uff1a\u662f\u4e0d\u662f\u6709\u53ef\u80fd\u67d0\u4e2a bug \u5728 Go 1.12 \u624d\u4f1a\u51fa\u73b0\u3001\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\uff1f<\/p>\n<p>\u8fd9\u95ee\u9898\u6709\u70b9\u8f74\uff0c\u4f46\u662f\u597d\u50cf\u5f88\u6709\u9053\u7406\uff0c\u6bd5\u7adf\u524d\u9762\u90a3\u4e48\u4e00\u5927\u6bb5\uff0c\u5149\u8bf4\u4e0d\u7ec3\uff0c\u50cf\u5047\u628a\u5f0f\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f820f343.jpg\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<p>\u4f46\u8fd9\u8981\u5982\u4f55\u624d\u80fd\u5b9e\u9524\u5462\uff1f<\/p>\n<p>\u524d\u9762\u63d0\u5230 go 1.12 \u7528 MADV_FREE\uff0c\u5185\u6838\u4f1a<strong>\u5728\u9700\u8981\u7684\u65f6\u5019<\/strong>\u624d\u56de\u6536\u8fd9\u4e9b\u9875\u9762\u3002<\/p>\n<p>\u5982\u679c\u6211\u4eec\u80fd\u60f3\u529e\u6cd5\u8ba9\u5185\u6838\u89c9\u5f97\u9700\u8981\u3001\u53bb\u56de\u6536\u8fd9\u4e9b\u53ef\u56de\u6536\u7684\u9875\u9762\uff0c\u5c31\u80fd\u5b9e\u9524\u4e86\u3002<\/p>\n<p>\u719f\u6089\u865a\u62df\u5316\uff08\u5982 xen \u3001kvm \uff09\u7684\u540c\u5b66\uff0c\u53ef\u80fd\u4f1a\u89c9\u5f97\u8fd9\u4e2a\u95ee\u9898\u5f88\u773c\u719f\uff1a\u5982\u679c\u5bbf\u4e3b\u673a\uff08\u51c6\u786e\u5730\u8bf4\u662f hypervisor \uff09\u80fd\u591f\u56de\u6536\u5ba2\u6237\u673a\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\uff0c\u90a3\u5c31\u53ef\u4ee5\u00a0~~\u8d85\u5356\u66f4\u591a VPS \u8d5a\u66f4\u591a\u94b1~~ \u5927\u5e45\u63d0\u9ad8\u5185\u5b58\u7684\u5229\u7528\u7387\u3002<\/p>\n<p>\u4ed6\u4eec\u662f\u600e\u4e48\u505a\u7684\u5462\uff1f<\/p>\n<p>xen \u7684\u89e3\u51b3\u65b9\u6848\u662f\uff1a\u5728\u5ba2\u6237\u673a\u91cc\u690d\u5165\u4e00\u6bb5\u7a0b\u5e8f\uff0c\u5176\u4e3b\u8981\u5de5\u4f5c\u662f\u7533\u8bf7\u65b0\u7684\u5185\u5b58\u3002\u80fd\u88ab\u5b83\u7533\u8bf7\u5230\u7684\u5185\u5b58\uff0c\u5c31\u662f\u5ba2\u6237\u673a\u53ef\u4ee5\u4e0d\u7528\u7684\u5185\u5b58\uff08\u5f53\u7136\u4e5f\u4e0d\u80fd\u7533\u8bf7\u5f97\u592a\u8fc7\u5206\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u5ba2\u6237\u673a\u4f7f\u7528 swap\uff0c\u6216\u5176\u4ed6\u8fdb\u7a0b OOM \uff09\u3002\u7136\u540e\u5bbf\u4e3b\u673a\u5c31\u53ef\u4ee5\u653e\u5fc3\u5c06\u8fd9\u4e9b\u5185\u5b58\u5bf9\u5e94\u7684\u7269\u7406\u9875\u632a\u4f5c\u4ed6\u7528\u4e86\u3002<\/p>\n<p>\u8fd9\u4e2a\u8fc7\u7a0b\u5c31\u50cf\u5728\u5439\u6c14\u7403\uff0c\u628a\u5ba2\u6237\u673a\u91cc\u80fd\u5360\u7528\u7684\u7a7a\u95f4\u90fd\u5360\u4f4f\u3002<\/p>\n<p>\u6240\u4ee5\u8fd9\u6bb5\u7a0b\u5e8f\u7684\u540d\u5b57\u53eb\u505a\uff1aballoon driver \u3002<\/p>\n<p>\u90a3\u4e48\u5b9e\u9524\u65b9\u6848\u5c31\u547c\u4e4b\u6b32\u51fa\u4e86\uff1a<\/p>\n<p>\u5982\u679c\u6211\u4eec\u4e5f\u5f04\u4e2a\u4e0d\u65ad\u81a8\u80c0\u7684\u6c14\u7403\uff08\u7533\u8bf7\u5185\u5b58\uff09\uff0c\u5185\u6838\u5c31\u4f1a\u89c9\u5f97\u9700\u8981\u53bb\u627e\u5176\u4ed6\u8fdb\u7a0b\u56de\u6536\u90a3\u4e9b\u88ab FREE \u6807\u8bb0\u7684\u5185\u5b58\u3002<\/p>\n<p>\u8bf4\u5e72\u5c31\u5e72\uff1a<\/p>\n<pre><code>#include &lt;stdio.h&gt; #include &lt;string.h&gt; #include &lt;unistd.h&gt;  int main() {     char *p = NULL;     const int MB = 1024 * 1024;     while (1) {         p = malloc(100 * MB);         memset(p, 0, 100 * MB);         sleep(1);     }     return 0; } <\/code><\/pre>\n<p>(\u6ce8\u610f memset\uff0c\u5426\u5219\u5185\u5b58\u4e0d\u4f1a\u5b9e\u9645\u5206\u914d)<\/p>\n<p>\u6548\u679c\u5982\u4e0b\uff1a<\/p>\n<pre><code>3261164 xxx     20   0 52.375g 0.035t  36524 S 579.1 66.0  16711:10 [\u6253\u7801]        2321665 xxx     20   0 16.358g 0.016t 569088 S  38.4  1.5   1128:45 .\/test   <\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u867d\u7136\u6253\u7801\u8fdb\u7a0b\u7684 VIRT \uff08\u5730\u5740\u7a7a\u95f4\u5927\u5c0f\uff09\u8fd8\u662f 52G\uff0c\u4f46\u662f\u5b9e\u9645\u5360\u7528\u7684\u5185\u5b58\u5df2\u7ecf\u4e0b\u964d\u5230 35G\uff0c\u6c14\u7403\u751f\u6548\u4e86\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f863bbd7.jpg\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<h1>\u5408\u00b2<\/h1>\n<p> <\/p>\n<p>\u7b80\u5355\u6c47\u603b\u4e00\u4e0b\u524d\u9762\u7684\u5185\u5bb9\uff1a<\/p>\n<ol>\n<li>Go 1.12 \u5347\u7ea7\u80fd\u964d\u4f4e\u5185\u5b58\u5206\u914d\u7684\u5ef6\u8fdf\uff0c\u4f46\u4f1a\u5bfc\u81f4\u8fdb\u7a0b RSS \u53d8\u9ad8<\/li>\n<li>\u56e0\u4e3a\u00a0Go 1.12 \u7528\u00a0MADV_FREE\uff0c\u4f1a\u8ba9\u5185\u6838\u5ef6\u8fdf\u56de\u6536\u5185\u5b58<\/li>\n<li>\u901a\u8fc7\u5728\u9875\u8868\u4e2d\u505a\u6807\u8bb0\u7684\u65b9\u5f0f\uff0c\u5ef6\u8fdf\u5185\u5b58\u7684\u5206\u914d\u548c\u56de\u6536\uff0c\u53ef\u4ee5\u63d0\u9ad8\u5185\u5b58\u7ba1\u7406\u7684\u6548\u7387<\/li>\n<li>\u53ef\u4ee5\u901a\u8fc7\u6c14\u7403\u6765\u8ba9 OS\/Hypervisor \u6324\u5360\u5185\u5b58\uff0c\u53e6\u4f5c\u4ed6\u7528<\/li>\n<\/ol>\n<p>\u987a\u4fbf\u4e00\u63d0\uff0c\u672c\u6587\u6d89\u53ca\u7684\u90e8\u5206\u77e5\u8bc6\u70b9\uff0c\u6211\u5728\u9762\u8bd5\u65f6\u5076\u5c14\u4f1a\u95ee\u5230\u3002<\/p>\n<p>\u6709\u4e9b\u5019\u9009\u4eba\u5c31\u89c9\u5f97\u6211\u662f\u5728\u5201\u96be\u4ed6\uff0c\u53cd\u95ee\u6211\uff1a<\/p>\n<p>\u201c\u4f60\u95ee\u7684\u8fd9\u4e9b\uff0c\u5de5\u4f5c\u4e2d\u90fd\u7528\u5f97\u5230\u5417\uff1f\u201d<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec36f8b574e5.jpg\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\" \/><\/p>\n<h4><strong>\u5728\u5b57\u8282\u8df3\u52a8\u771f\u7528\u5f97\u4e0a\uff0c\u4e0d\u4fe1\u4f60\u6765\u8bd5\u8bd5\uff1f<\/strong><\/h4>\n<p><strong>~ \u6295\u9012\u94fe\u63a5 ~<\/strong><\/p>\n<p>\u7f51\u76df\u5e7f\u544a\uff08\u7a7f\u5c71\u7532\uff09-\u540e\u7aef\u5f00\u53d1(\u4e0a\u6d77) https:\/\/job.toutiao.com\/s\/sBAvKe<\/p>\n<p>\u7f51\u76df\u5e7f\u544a\uff08\u7a7f\u5c71\u7532\uff09-\u540e\u7aef\u5f00\u53d1(\u5317\u4eac) https:\/\/job.toutiao.com\/s\/sBMyxk<\/p>\n<p>\u5176\u4ed6\u5730\u533a\u3001\u5176\u4ed6\u804c\u80fd\u7ebf https:\/\/job.toutiao.com\/s\/sB9Jqk<\/p>\n<p>\u5173\u4e8e\u5b57\u8282\u8df3\u52a8\u9762\u8bd5\u7684\u8be6\u60c5\uff0c\u53ef\u53c2\u8003\u6211\u4e4b\u524d\u5199\u7684\uff1a<\/p>\n<p>\u300a\u7a0b\u5e8f\u5458\u9762\u8bd5\u6307\u5317\uff1a\u9762\u8bd5\u5b98\u89c6\u89d2\u300b<\/p>\n<p><strong>\u53c2\u8003\u94fe\u63a5:<\/strong><\/p>\n<p>[1]\u00a0Go 1.12 \u5173\u4e8e\u5185\u5b58\u91ca\u653e\u7684\u4e00\u4e2a\u6539\u8fdb https:\/\/ms2008.github.io\/2019\/06\/30\/golang-madvfree\/<\/p>\n<p>[2]\u00a0What a C programmer should know about memory<br \/> https:\/\/marek.vavrusa.com\/memory\/<\/p>\n<p>[3]\u00a0tcmalloc2.1 \u6d45\u6790 https:\/\/wertherzhang.com\/tcmalloc2.1%E6%B5%85%E6%9E%90\/<\/p>\n<h1>\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u516c\u4f17\u53f7<\/h1>\n<p> <\/p>\n<p>\u5fae\u4fe1\u626b\u7801<\/p>\n<pre><code>   \u2584\u2584\u2584\u2584\u2584\u2584\u2584   \u2584      \u2584\u2584\u2584\u2584 \u2584\u2584\u2584\u2584\u2584\u2584\u2584      \u2588 \u2584\u2584\u2584 \u2588 \u2584\u2580 \u2584 \u2580\u2588\u2588\u2584 \u2580\u2588\u2584 \u2588 \u2584\u2584\u2584 \u2588      \u2588 \u2588\u2588\u2588 \u2588  \u2588  \u2588  \u2588\u2580\u2580\u2580\u2588\u2580 \u2588 \u2588\u2588\u2588 \u2588      \u2588\u2584\u2584\u2584\u2584\u2584\u2588 \u2584 \u2588\u2580\u2588 \u2588\u2580\u2588 \u2584\u2580\u2588 \u2588\u2584\u2584\u2584\u2584\u2584\u2588      \u2584\u2584\u2584 \u2584\u2584\u2584\u2584\u2588  \u2580\u2584\u2588\u2580\u2580\u2580\u2588 \u2584\u2588\u2584\u2584   \u2584        \u2584\u2588\u2584\u2584\u2584\u2584\u2584\u2580\u2584\u2580\u2584\u2588\u2588   \u2580 \u2584  \u2588\u2580\u2584\u2584\u2580\u2584\u2584\u2588      \u2588 \u2588\u2580\u2584\u2580\u2584\u2584\u2580\u2580\u2588\u2584\u2580\u2588\u2584\u2580\u2588\u2588\u2588\u2588\u2588\u2580\u2588\u2580\u2580\u2588 \u2588\u2584       \u2580\u2580  \u2588\u2584\u2588\u2588\u2584\u2588\u2580  \u2588 \u2580\u2588\u2580 \u2580\u2588\u2580 \u2584\u2580\u2580\u2584\u2588      \u2588\u2580 \u2580 \u2584\u2584\u2584\u2584\u2584\u2584\u2580\u2584\u2588\u2588  \u2588 \u2584\u2588\u2588\u2588\u2588\u2580\u2580 \u2588\u2584      \u2584\u2580\u2584\u2584\u2584 \u2584 \u2580\u2580\u2584\u2588\u2588\u2588\u2588\u2580\u2588\u2580  \u2580 \u2588\u2584\u2584\u2584\u2580\u2584\u2588      \u2584\u2580\u2580\u2588\u2588\u2584\u2584  \u2588\u2580\u2584\u2580\u2588\u2580\u2580 \u2588\u2580 \u2584\u2584\u2584\u2588\u2588\u2580 \u2580       \u2584\u2584\u2584\u2584\u2584\u2584\u2584 \u2588 \u2588\u2580 \u2580\u2580   \u2584\u2588\u2588 \u2584 \u2588\u2584\u2580\u2588\u2588      \u2588 \u2584\u2584\u2584 \u2588 \u2588\u2584 \u2580\u2584\u2580 \u2580\u2588\u2588  \u2588\u2584\u2584\u2584\u2588\u2584  \u2580      \u2588 \u2588\u2588\u2588 \u2588 \u2584 \u2588\u2588\u2588\u2580\u2580\u2580\u2588\u2584 \u2588\u2580\u2584 \u2588\u2588\u2584 \u2580\u2588      \u2588\u2584\u2584\u2584\u2584\u2584\u2588 \u2588\u2588 \u2584\u2588\u2580\u2588  \u2588 \u2580\u2588\u2588\u2584\u2584\u2584  \u2588\u2584    <\/code><\/pre>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>100<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"1294486\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : asAnotherJack <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4e4b\u524d\u4e5f\u9047\u5230\u4e86\u7c7b\u4f3c\u7684\u60c5\u51b5\uff0c\u4e5f\u4ee5\u4e3a\u662f\u5185\u5b58\u6cc4\u6f0f <img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/2rPV8B6J-3.png\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\"> <br \/>\u53e6\u5916\u53ef\u4ee5\u8bbe\u7f6e GODEBUG madvdontneed \u4f7f\u7528\u4e4b\u524d\u7684\u884c\u4e3a<\/p>\n<p>https:\/\/godoc.org\/runtime#hdr-Environment_Variables<\/p>\n<p>madvdontneed: setting madvdontneed=1 will use MADV_DONTNEED<br \/>instead of MADV_FREE on Linux when returning memory to the<br \/>kernel. This is less efficient, but causes RSS numbers to drop<br \/>more quickly.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294487\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : xloger <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6536\u85cf\u591a\u4e8e\u56de\u590d\uff0c\u5bf9\u6211\u6765\u8bf4\u7684\u8bdd\u662f\u56e0\u4e3a\u535a\u4e3b\u7684\u5927\u90e8\u5206\u6587\u7ae0\u90fd\u662f\u79d1\u666e\u5411\uff0c\u5199\u5f97\u7684\u786e\u633a\u597d\u4e5f\u5f88\u6709\u8da3\uff0c\u4f46\u662f\u6211\u4e5f\u5c31\u53ea\u80fd\u5b66\u4e60\u4e00\u4e0b\u4e86\uff0c\u6211 \u6280\u672f\u6808\u4e0d\u662f\u8fd9\u65b9\u9762 \/\u6c34\u5e73\u4e0d\u591f \u6ca1\u6cd5\u53c2\u4e0e\u8ba8\u8bba\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294488\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : rockyou12 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u786c\u6838\u6587\u7ae0\uff0c\u56de\u590d\u652f\u6301\u4e0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294489\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @xloger @rockyou12 \u9876\u5e16\u90fd\u662f\u771f\u7231~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294490\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : bluefalconjun <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6f02\u4eae! \u8fd9\u79cd\u95ee\u9898\u8ffd\u8d77\u6765\u662f\u6700\u6709\u610f\u601d\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294491\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : labulaka521 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6536\u85cf\u6539\u5929\u770b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294492\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : dandycheung <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5f00\u7bc7\u8bf4\u7684\u662f\u6536\u85cf\u5c11\u4e8e\u56de\u590d\u5440\uff1f\u5230\u5e95\u662f\u4ec0\u4e48\u72b6\u51b5\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294493\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : dilu <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6211\u4ee5\u4e3a\u662f\u4e2a\u6280\u672f\u5206\u4eab\uff0c\u7ed3\u679c\u662f\u4e2a\u62db\u8058                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294494\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : IMCA1024 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8fd9\u662f\u5927\u4f6c\uff0c\u6211\u73b0\u5728\u770b\u4e0d\u61c2                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294495\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : pmispig <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4f60\u8fd9\u4e2a\u6545\u4e8b\u6709\u4e00\u4e2a\u7591\u70b9\uff0c\u5c31\u662f\u4f60\u8bf4\u4f60\u5f00\u542f\u4e86 pprof\uff0c\u95ee\u9898\u5c31\u5728\u8fd9\u91cc\uff0cpprof \u662f\u4e0d\u4f1a\u6492\u8c0e\u7684\uff0c\u5b83\u7ed9\u4f60\u7684\u4fe1\u606f\u53ef\u4ee5\u770b\u51fa\u771f\u5b9e\u5728\u4f7f\u7528\u7684\u5185\u5b58\uff0c\u53ef\u88ab GC \u56de\u6536\u7684\uff0c\u6216\u8005\u88ab\u7cfb\u7edf\u56de\u6536\u7684\u5185\u5b58\u662f\u53ef\u4ee5\u770b\u51fa\u6765\u7684\uff0c\u7528 pprof \u89c2\u5bdf\u7684\u8bdd\uff0c\u662f\u4e0d\u4f1a\u5f97\u51fa\u5185\u5b58\u66b4\u6da8\u8fd9\u6837\u7684\u7ed3\u8bba\u7684\u3002\u56e0\u4e3a\u4f60\u80fd\u660e\u786e\u770b\u5230 HeapAlloc \u3002<br \/>\u9000\u4e00\u6b65\u8bf4\uff0c\u5c31\u7b97\u4f60\u6ca1\u6709\u5f00\u542f pprof\uff0c\u90a3\u4e48\u4f60\u53ef\u4ee5\u7d27\u6025\u4e0a\u4e00\u4e2a\u5e26\u6709\u5b9a\u65f6\u4efb\u52a1\u7684 runtime.MemStats,\u6bcf\u79d2\u4e00\u6b21\u6253\u51fa HeapAlloc\uff0c\u4e5f\u4e0d\u4f1a\u5f97\u51fa\u7ed3\u8bba\u5185\u5b58\u66b4\u6da8\u3002<br \/>\u8fd8\u8bf7\u4e3b\u6307\u70b9                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294496\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @pmispig \u5bf9\uff0c\u53ef\u80fd\u6587\u4e2d\u6ca1\u8bf4\u5f97\u5f88\u660e\u786e\uff0cpprof \u6ca1\u5bf9\u6bd4\u51fa\u5dee\u522b\uff08\u201c\u53e6\u4e00\u65b9\u9762\u4e5f\u6ca1\u67e5\u51fa\u5565\u95ee\u9898\u201d\uff09\uff0c\u5185\u5b58\u66b4\u6da8\u662f ganglia \u4e0a\u770b\u5230\uff0cps\/top \u4e5f\u80fd\u770b\u5230\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294497\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @dandycheung \u7b26\u53f7\u6253\u53cd\u4e86&#8230;                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294498\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @IMCA1024 \u54ea\u513f\u4e0d\u61c2\uff0c\u63d0\u51fa\u4e00\u4e2a\u95ee\u9898\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294499\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : pmispig <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021 \u8bf7\u95ee\u6709\u6ca1\u6709\u6ce8\u610f free buff\/cache \u7684\u5927\u5c0f\uff0c\u6309\u9053\u7406\u6765\u8bf4\uff0c\u53ef\u88ab\u91ca\u653e\u7684\u5185\u5b58\u4f1a\u51fa\u73b0\u5728\u8fd9\u4e2a\u91cc\u9762\uff0c\u5982\u679c\u4f60\u7528 available \u6765\u770b\u7684\u8bdd\u5e94\u8be5\u4e5f\u662f\u6b63\u5e38\u7684\uff0c\u53ea\u662f used \u4e0d\u597d\u770b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294500\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @pmispig \u56e0\u4e3a\u8fd9\u4e9b\u9875\u9762\u8fd8\u6ca1\u88ab OS \u56de\u6536\uff0c\u6240\u4ee5\u4e0d\u4f1a\u8ba1\u5165\u5230 free \u7684 buff\/cache \uff1b\u4e0d\u8fc7\u5982\u679c\u7528 rnutime.MemStats \u770b\u5e94\u8be5\u662f\u80fd\u770b\u5230\u88ab go runtime \u4f7f\u7528\u7684\u5185\u5b58\u6ca1\u6709\u66b4\u6da8                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294501\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : rrfeng <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6709\u4e00\u4e2a\u5dee\u4e0d\u591a\u7684\u60c5\u51b5\uff0credis info memory \u91cc\u4f1a\u6709\u51e0\u4e2a\u503c\uff1amax,used,peak\uff0c\u5982\u679c\u6709\u5927\u91cf key \u8fc7\u671f\u6216\u8005\u5220\u9664\uff0cpeak &gt; used \u3002<\/p>\n<p>\u800c peak = \u8fdb\u7a0b rss\uff0cused = redis \u91cc\u6240\u6709\u5bf9\u8c61\u5360\u7528\u7684\uff0c\u5b9e\u9645\u4e0a redis \u5e76\u6ca1\u6709\u7528\u5230\u8fd9\u4e9b\u5185\u5b58\uff0c\u4f46\u662f\u4e0d\u4f1a\u7acb\u5373\u91ca\u653e\u7ed9 OS \u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294502\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : ysmood <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6240\u4ee5\u8fd8\u662f\u6ca1\u63d0\u7b97\u6cd5\u8fb9\u754c\u6761\u4ef6\u7684\u7ec6\u8282\uff0c\u5355\u7eaf\u9760\u8bbe\u7f6e flag \u6216\u8005\u5439\u6c14\u7403\u53ea\u662f\u5728\u56de\u907f\u95ee\u9898\u6838\u5fc3\uff1f<br \/>\u6bd4\u5982\u5199\u4e2a\u6700\u5c0f go \u5b9e\u4f8b\u80fd 100% \u590d\u73b0\u8fd9\u4e2a\u95ee\u9898\u3002\u4e00\u822c\u4eba\u771f\u6b63\u5173\u5fc3\u7684\u662f\u5982\u4f55\u5728 go \u4ee3\u7801\u5c42\u56de\u907f\u8fd9\u4e2a\u95ee\u9898\u5427\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294503\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : ysmood <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6240\u4ee5\u8bf4\u767d\u4e86\u5c31\u662f\u76d1\u63a7\u53cd\u5e94\u7684\u4e0d\u662f\u771f\u5b9e\u60c5\u51b5\uff0c\u8fd0\u7ef4\u9700\u8981\u4e0e\u65f6\u4ff1\u8fdb\u6539\u5584\u5bf9\u65b0 linux \u5185\u6838\u7684\u76d1\u63a7\u65b9\u5f0f\uff08\u7b11                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294504\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @ysmood \u5176\u5b9e\u5bf9\u4e8e\u5927\u90e8\u5206\u7684\u573a\u666f\uff0cdontneed \u548c free \u7684\u5dee\u522b \u53ef\u80fd\u90fd\u4e0d\u4f1a\u88ab\u89c2\u6d4b\u5230\uff0c\u6211\u4eec\u7684\u573a\u666f\u6bd4\u8f83\u7279\u6b8a\uff0c\u5185\u5b58\u5360\u7528\u6bd4\u8f83\u5927\uff0c\u4f1a\u5bfc\u81f4 RSS \u592a\u5927\u89e6\u53d1\u62a5\u8b66\u3002<\/p>\n<p>\u89e3\u51b3\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528 go1.12 \u65b0\u589e\u7684 GODEBUG=madvdontneed=1 \u8fd9\u4e2a\u73af\u5883\u53d8\u91cf\uff0c\u5207\u56de\u5230\u539f\u6765\u7684\u6a21\u5f0f\u3002<\/p>\n<p>\u76d1\u63a7\u53cd\u5e94\u7684\u60c5\u51b5\u662f\u5426\u201c\u771f\u5b9e\u201d\u8981\u770b\u600e\u4e48\u5b9a\u4e49\u4e86\u3002\u3002\u3002\u8fd9\u4e2a\u672a\u56de\u6536\u7684\u9875\u9762\u53ef\u4ee5\u5982\u4f55\u4f53\u73b0\uff0c\u786e\u5b9e\u662f\u4e2a\u4e0d\u9519\u7684\u95ee\u9898                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294505\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : loalj <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u53bb\u5e74\u4e5f\u78b0\u5230\u8fc7\uff0c\u5728\u7cfb\u7edf\u4e0a\u770b\u5230\u6700\u76f4\u89c2\u7684\u6307\u6807\u662f heapAlloc\/heapReleased, heapReleased \u5728 MADV_FREE \u6a21\u5f0f\u4e0b\u4e0d\u4f1a\u8fd8\u7ed9 OS. \u53e6\u5916 MADV_FREE \u5bf9\u6bd4 DONTNEED \u6211\u4eec\u5f53\u65f6\u89c2\u5bdf\u5230\u786e\u5b9e\u5728 minor page fault \u4e0a\u4f18\u5316\u4e86\u5f88\u591a\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294506\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : phpcyy <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u501f\u95ee\u4e2a\u548c\u4e3b\u66fe\u7ecf\u51fa\u73b0\u8fc7\u7684\u76f8\u4f3c\u7684\u95ee\u9898\uff0c\u5f88\u9ad8\u5174\u80fd\u9047\u89c1\u5927\u4f6c\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u70b9\u6307\u70b9\uff1a<\/p>\n<p>\u6709\u4e00\u6b21\u53d1\u5b8c golang \u9879\u76ee\uff0c\u5185\u5b58\u5360\u7528\u4f1a\u6301\u7eed\u4e0a\u5347\uff0c\u8868\u73b0\u4e3a\u67d0\u4e2a\u65f6\u95f4\u6bb5\u6301\u7eed\u4e0a\u5347\uff0c\u67d0\u4e2a\u65f6\u95f4\u6bb5\u9759\u6b62\uff0c\u518d\u8fc7\u4e00\u6bb5\u65f6\u95f4\u53c8\u4f1a\u518d\u6b21\u4e0a\u5347\uff0c\u76f4\u81f3\u5185\u5b58\u5168\u90e8\u7528\u5149\uff0c\u64cd\u4f5c\u7cfb\u7edf\u6740\u6b7b\u8be5\u8fdb\u7a0b\uff0csupervisor \u91cd\u65b0\u62c9\u8d77\u6765\u8be5\u8fdb\u7a0b\u3002<\/p>\n<p>\u6211\u4e5f\u662f\u7528 pprof \u5206\u6790\u4e86\u597d\u4e45\uff0c\u53d1\u73b0\u6ca1\u6709\u4efb\u4f55\u5f02\u5e38\u3002<br \/>\u7136\u540e\u53c8\u5728\u672c\u5730\u538b\u6d4b\u4ec0\u4e48\u7684\uff0c\u90fd\u6ca1\u590d\u73b0\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u6700\u540e\u771f\u7684\u662f\u65e0\u53ef\u5948\u4f55\uff0c\u53ea\u80fd\u5230\u5904\u770b\u770b\u9879\u76ee\u3002\u5076\u7136\u53bb\u68c0\u67e5\u4e86\u6784\u5efa\u547d\u4ee4\uff0c\u4e4b\u524d\u6211\u590d\u5236\u7684\u6d4b\u8bd5\u73af\u5883\u7684\u547d\u4ee4\uff0c\u628a `-race` \u52a0\u4e0a\u4e86\uff0c\u7ebf\u4e0a\u73af\u5883\u53bb\u6389\u8be5\u6307\u4ee4\u540e\u5185\u5b58\u6cc4\u6f0f\u95ee\u9898\u5c31\u89e3\u51b3\u4e86\u3002<\/p>\n<p>\u5f53\u65f6\u7684 golang \u7248\u672c\u662f 1.13.6\uff0c\u8bf7\u95ee\u60a8\u89c9\u5f97\u4e5f\u662f\u8fd9\u4e2a\u95ee\u9898\u5bfc\u81f4\u7684\u5417\uff1f\u6291\u6216\u662f\u6211\u53ef\u4ee5\u901a\u8fc7\u4ec0\u4e48\u65b9\u6cd5\u627e\u5230\u95ee\u9898\u6839\u6e90\uff1f<\/p>\n<p>\u5982\u80fd\u7ed9\u70b9\u6307\u5bfc\uff0c\u4e0d\u80dc\u611f\u6fc0\u3002<\/p>\n<p>\u8865\u5145\u4e00\u70b9\uff1a<br \/>\u6211\u641c go race memory leak\uff0c\u770b\u5230\u76f8\u5173\u7684 issue \u5df2\u7ecf\u88ab close \u548c fix \u4e86\u3002<\/p>\n<p>\uff08 ps: \u6700\u8fd1\u9762\u4e86\u5934\u6761\uff0c\u5f53\u7136\u662f\u4e0d\u8fc7\uff0c\u6bd5\u7adf\u6211\u8fd9\u79cd\u5206\u6790\u6c34\u5e73\u786e\u5b9e\u4e0d\u592a\u884c\uff0c\u8fd9\u4e2a\u95ee\u9898\u4e5f\u8868\u73b0\u4e86\u81ea\u5df1\u80fd\u529b\u7684\u4e0d\u8db3\u3002\uff09                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294507\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : ysmood <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @ysmood \u6211\u8bf4\u7684 flag \u5c31\u662f\u6307\u7684\u8fd9\u4e2a GODEBUG=madvdontneed=1 \u554a\u3002\u6240\u4ee5\u7406\u8bba\u4e0a\u5e94\u8be5\u53bb\u4fee\u6b63\u76d1\u63a7\u548c\u62a5\u8b66\u5427\uff0c\u867d\u7136\u53ef\u80fd\u6539 flag \u662f\u6700\u73b0\u5b9e\u7684\u505a\u6cd5\uff0c\u4f46\u6211\u89c9\u5f97\u6700\u597d\u662f\u628a\u7406\u8bba\u4e5f\u8bf4\u6e05\u695a\u4ee5\u514d\u770b\u4e0d\u61c2\u7684\u4eba\u8bef\u89e3\u3002<\/p>\n<p>\u5185\u5b58\u62a5\u8b66\u4e0d\u5e94\u8be5\u662f\u6cc4\u6f0f\u5bfc\u81f4\u9700\u8981\u5185\u5b58\u7684\u5730\u65b9\u6ca1\u6709\u8db3\u591f\u5185\u5b58\u4f7f\u7528\u5417\uff1f\u8fd8\u9700\u8981\u600e\u4e48\u5b9a\u4e49\uff1f\u73b0\u5728\u662f\u5176\u5b83\u7a0b\u5e8f\u9700\u8981\u5185\u5b58\u4f9d\u7136\u80fd\u6b63\u5e38\u5f97\u5230\u5427\uff1f<\/p>\n<p>\u6211\u89c9\u5f97\u53bb\u4e1a\u754c\u770b\u770b\u7528\u7684\u591a\u7684\u76d1\u63a7\u7cfb\u7edf\u6e90\u4ee3\u7801\uff0c\u80af\u5b9a\u6709\u76d1\u63a7\u7cfb\u7edf\u5df2\u7ecf\u4fee\u6b63\u6216\u8005\u6253\u7b97\u4fee\u6b63\u8fd9\u4e2a\u95ee\u9898\u4e86\uff0c\u4e5f\u4e0d\u662f\u53ea\u6709 go \u624d\u80fd\u89e6\u53d1\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294508\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : egen <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u597d\u5947\u8fd9\u4e2a\u95ee\u9898\u8ffd\u4e86\u591a\u4e45                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294509\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @phpcyy \u770b\u8d77\u6765\u4f60\u8fd9\u4e2a case \u5c31\u662f\u591a\u7ebf\u7a0b\u7ade\u4e89\u5171\u4eab\u53d8\u91cf\u7684\u5904\u7406\u4e0d\u5f53\u5bfc\u81f4\u4e86\u5185\u5b58\u6cc4\u6f0f\uff0c-race \u6ce8\u5165\u4e86\u5f88\u591a\u4ee3\u7801\uff0c\u4f1a\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\uff08 race-enabled binaries can use ten times the CPU and memory \uff09\uff0c\u4f46\u662f\u53ef\u80fd\u5e26\u6765\u7684\u610f\u5916\u6536\u83b7\u662f\u5927\u5e45\u964d\u4f4e\u4e86\u7ade\u4e89\u51b2\u7a81\u51fa\u73b0\u7684\u6982\u7387\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294510\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : tt67wq <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8fd9\u4e2a\u7801\u4e3a\u4f55\u6211\u626b\u4e0d\u51fa\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294511\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @ysmood \u7406\u8bba\u4e0a\u662f\u7684\uff0c\u4f46\u662f\u8fd9\u4e2a\u5468\u671f\u53ef\u80fd\u5f88\u957f\u3002<\/p>\n<p>\u60f3\u8981\u76d1\u63a7\u5230\u8fd9\u90e8\u5206\u5185\u5b58\uff0c\u9700\u8981 Linux \u5185\u6838\u91c7\u96c6\u66f4\u591a\u4fe1\u606f\uff0c\u4ee5\u53ca\u66f4\u65b0\u6574\u4e2a\u76d1\u63a7\u65b9\u6848\u7684\u76f8\u5173\u903b\u8f91\u3002<\/p>\n<p>\u6211\u6ce8\u610f\u5230\u6709\u5f00\u53d1\u8005\u7ed9\u5185\u6838\u63d0\u4e86\u4e2a patch\uff0c\u4f46\u662f\u5f00\u53d1\u8005\u524d\u5e74\u8fc7\u4e16\u4e86\uff0c\u4e0d\u77e5\u9053\u540e\u7eed\u60c5\u51b5\u5982\u4f55\uff1a<\/p>\n<p>mm: add a separate RSS for MADV_FREE pages<br \/>https:\/\/lore.kernel.org\/patchwork\/patch\/760453\/                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294512\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : tt67wq <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u539f\u6765\u662f\u6211\u6c99\u96d5\u6d4f\u89c8\u5668\u7684\u95ee\u9898\uff0c\u590d\u5236\u5230\u6587\u672c\u91cc\u9762\u5c31\u80fd\u626b\u51fa\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294513\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @egen \u5f53\u5929\u5b9a\u4f4d\u4e86\u95ee\u9898\uff0c\u51e0\u4e2a\u5c0f\u65f6\u5427                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294514\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @tt67wq \u4e0b\u6b21\u6211\u8fd8\u662f\u8d34\u56fe\u5427\u3002\u3002\u611f\u89c9\u635f\u5931\u4e86\u597d\u591a\u8f6c\u5316\uff08\u6342\u8138\uff09                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294515\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : luojian666 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5df2\u5173\u6ce8~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294516\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : spidermansam0718 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5b66\u4e60\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294517\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @phpcyy \u6211\u597d\u50cf\u770b\u9519\u4e86\u4f60\u7684\u95ee\u9898\uff0c\u662f\u8bf4\u6d4b\u8bd5\u73af\u5883\u7528\u4e86 -race \u51fa\u73b0\u5185\u5b58\u5f02\u5e38\uff0c\u4f46\u662f\u7ebf\u4e0a\u6ca1\u7528 -race \u5c31\u6b63\u5e38\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294518\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @phpcyy \u90a3\u770b\u8d77\u6765\u662f race runtime \u7684\u95ee\u9898\uff0c\u7ec6\u8282\u4f60\u5f97\u770b\u770b\u90a3\u4e2a issue \u505a\u4e86\u5565                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294519\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : phpcyy <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021 \u5bf9\uff0c\u6027\u80fd\u4e0b\u964d\u6211\u662f\u8ba4\u7684\uff0c\u4f46\u662f\u5185\u5b58\u6cc4\u6f0f\u6211\u4e0d\u77e5\u9053\u662f\u7531\u4e8e\u6211\u7684\u4ee3\u7801\u4e2d\u5b58\u5728\u4ec0\u4e48\u95ee\u9898\u5bfc\u81f4\u7684\u8fd8\u662f go build -race \u4e2d\u6709\u4ec0\u4e48\u673a\u5236\u5bfc\u81f4\u7684\u3002<\/p>\n<p>\u6211\u53bb\u6389\u4e86\u8fd9\u4e2a flag \u4e4b\u540e\u5185\u5b58\u5c31\u6ca1\u53d8\u5316\u8fc7\uff0c\u800c\u4e14\u6807\u51c6\u8f93\u51fa\u4e2d\u4e0d\u8bb0\u5f97\u6709 go race \u68c0\u6d4b\u5230\u7684\u5e76\u53d1\u51b2\u7a81\u3002<br \/>\u8fd8\u6709\u5c31\u662f\u5982\u679c\u5e76\u53d1\u8bbf\u95ee\u53ef\u80fd\u4f1a\u5bfc\u81f4 panic\uff0c\u7a0b\u5e8f\u4e5f\u6ca1\u6709 panic \u8bb0\u5f55\u3002<\/p>\n<p>\u5b9e\u9645\u4e0a\u6211\u7684\u90a3\u4e2a\u4ee3\u7801\u975e\u5e38\u7b80\u5355\uff0c\u8ba9\u53e6\u5916\u4e00\u4e2a\u540c\u4e8b\u4e00\u8d77\u9010\u884c\u68c0\u6d4b\u8fc7\uff0c\u6ca1\u53d1\u73b0\u4efb\u4f55\u95ee\u9898\u3002<\/p>\n<p>\u73b0\u5728\u5c31\u662f\u975e\u5e38\u7591\u60d1\u4ec0\u4e48\u60c5\u5f62\u4e0b\u5f00\u4e86 race flag \u4f1a\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\uff0c\u5176\u5b9e\u8fd9\u4e2a case \u633a\u96be\u9047\u5230\u7684\uff0c\u73b0\u5728\u4e5f\u7b97\u662f\u89e3\u51b3\u4e86\uff0c\u5c31\u662f\u4e0d\u77e5\u9053\u66f4\u7ec6\u8282\u7684\u5751\u662f\u4ec0\u4e48\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294520\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : phpcyy <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021 #32\uff0c\u662f\u7ebf\u4e0a\u539f\u5148\u7528 -race \u5f02\u5e38\uff0c\u53bb\u6389\u4e86\u5c31\u6b63\u5e38\uff0c\u518d\u4e5f\u6ca1\u53d1\u751f\u8fc7\u5185\u5b58\u53d8\u5316\u3002\u539f\u5148\u662f 1 \u5929\u4ee5\u5185\u5fc5\u5b9a\u5927\u5e45\u5ea6\u4e0a\u5347\uff0c\u6539\u4e86\u4e4b\u540e\u5341\u51e0\u5929\u5185\u5b58\u90fd\u662f\u7a33\u5b9a\u7684\u76f4\u7ebf\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294521\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : qwefdrt <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6587\u7ae0\u5199\u7684\u592a\u6709\u610f\u601d\u4e86\uff0c\u4f46\u662f\u6700\u540e\u9632\u4e0d\u80dc\u9632\u554a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294522\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : Dreamacro <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5 GODEBUG=madvdontneed=1 \u7981\u7528 MADV_FREE                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294523\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : phytry <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u9876\u9876\uff0c\u6211\u4e5f\u9047\u5230\u8fc7\uff0c\u4ee5\u4e3a\u662f\u5185\u5b58\u6cc4\u6f0f\uff0c\u4f46\u662f\u8fc7\u6bb5\u65f6\u95f4\u5c31\u6062\u590d\u6b63\u5e38\u4e86\uff0c\u6211\u5165\u5751\u7684\u65f6\u5019 go \u5c31\u5df2\u7ecf\u662f 1.12 \uff0c\u6211\u5f53\u65f6\u4ee5\u4e3a\u8fd9\u662f go \u81ea\u8eab\u7684\u7279\u6027\uff0c\u5c31\u6ca1\u6709\u7ee7\u7eed\u7814\u7a76\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294524\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @Dreamacro \u5347\u7ea7\u7684\u65f6\u5019\u6ca1\u7ec6\u770b release notes\uff0c\u4f30\u8ba1\u770b\u4e86\u4e5f\u4e0d\u77e5\u9053\u5f71\u54cd\u4f1a\u8fd9\u4e48\u5927                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294525\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : gemini767 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4e0d\u9519\u7684 case\uff0c\u4f46\u662f\u6211\u6709\u4e00\u4e2a\u7591\u95ee\uff0c\u7ebf\u4e0a\u73af\u5883\u96be\u9053\u4e0d\u662f docker \u6253\u5305\uff0c\u4e3a\u4ec0\u4e48\u4f1a\u6709\u540c\u4e00\u73af\u5883\u591a linux kernel \u7248\u672c\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294526\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zdt3476 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @phpcyy \u4f7f\u7528-race \u53c2\u6570\u7684\u8bdd\uff0c\u8fbe\u5230 1024 \u4e2a goroutine \u8fdb\u7a0b\u5c31\u4f1a\u6302\u6389                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294527\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : jinsongzhao <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             gc \u624d\u662f\u6700\u5927\u7684\u5751\uff0c\u4e0d\u8fc7\u786e\u5b9e\u5927\u5e45\u5ea6\u964d\u4f4e\u4e86\u7a0b\u5e8f\u5458\u95e8\u69db\uff0c\u63d0\u9ad8\u4e86\u7a0b\u5e8f\u5458\u4f53\u9a8c\u3002\u8fde\u7f16\u7a0b\u7684\u59b9\u5b50\u90fd\u8d8a\u6765\u8d8a\u591a\u4e86\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u8fd8\u662f\u9700\u8981 gc \u8fd9\u4e2a\u5751                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294528\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : ikaros <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6211\u4eec\u4e4b\u524d\u4e5f\u9047\u5230\u8fc7\u8fd9\u4e2a\u95ee\u9898, \u4e5f\u662f\u5e7f\u544a\u70b9\u51fb\u7cfb\u7edf, pprof \u90a3\u4e2a cum \u8fd8\u662f\u5565\u6211\u8bb0\u5f97\u662f\u6709\u5217\u51fa\u6574\u4e2a\u7a0b\u5e8f\u751f\u547d\u4e2d\u5404\u4e2a\u51fd\u6570\u4ece\u9ad8\u5230\u4f4e\u7533\u8bf7\u7684\u5185\u5b58\u91cf\u7684, \u7136\u540e\u4f9d\u6b21\u68c0\u67e5\u6bcf\u4e2a\u51fd\u6570\u5185\u90e8\u6709\u6ca1\u6709\u5927\u7684\u5bf9\u8c61\u5206\u914d                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294529\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : songjiaxin2008 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @gemini767 #40 docker \u5e76\u4e0d\u80fd\u6539\u53d8\u5bbf\u4e3b\u673a\u5185\u6838\u7248\u672c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294530\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : lewinlan <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u524d\u9635\u5b50\u9047\u5230\u8fc7\u7c7b\u4f3c\u95ee\u9898\u3002<br \/>docker \u770b\u5185\u5b58\u7206\u70b8\uff0cpprof \u770b\u6beb\u65e0\u538b\u529b\u3002\u7814\u7a76\u4e86\u597d\u4e45\u624d\u77e5\u9053\u662f\u7edf\u8ba1\u53e3\u5f84\u7684\u95ee\u9898\uff0c\u7136\u540e\u5199\u4e86\u7bc7\u535a\u5ba2\u8bb0\u5f55\u4e86\u4e0b\u5c31\u6ca1\u518d\u5173\u5fc3\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294531\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @gemini767 \u6211\u4eec\u8fd9\u4e2a\u670d\u52a1\u5185\u5b58\u8981\u6c42\u6bd4\u8f83\u5927\uff0c\u76ee\u524d\u7528\u7684\u662f\u7269\u7406\u673a\uff0c\u6b63\u5728\u505a\u67b6\u6784\u8c03\u6574                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294532\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zhouwei520 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5b66\u4e60\u5230\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294533\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : lucky215 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5b66\u4e60\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294534\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : logic159 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5199\u5f97\u4e0d\u9519                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294535\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : gemini767 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @songjiaxin2008 \u5b66\u4e60\u5230\u4e86 docker image \u4f7f\u7528\u5bbf\u4e3b\u673a\u7684\u5171\u4eab kernel                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294536\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : bsidb <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             Linux \u4e0b\u5185\u5b58\u5206\u914d\u90a3\u4e00\u6bb5\u83b7\u76ca\u532a\u6d45\u3002\u4e4b\u524d\u7528 C \u8bed\u8a00\u5199\u79d1\u5b66\u7a0b\u5e8f\u7684\u65f6\u5019\u5c31\u9047\u5230\u4e86\u7c7b\u4f3c\u7684\u95ee\u9898\u3002\u7528 malloc \u7533\u8bf7\u4e86\u4e00\u6bb5\u975e\u5e38\u5927\u7684\u5185\u5b58\u7f13\u51b2\u533a\u4e4b\u540e\uff0c\u7b2c\u4e00\u6b21\u626b\u63cf\u8be5\u7f13\u51b2\u533a\u7684\u901f\u5ea6\u7279\u522b\u6162\uff0c\u540e\u9762\u518d\u6b21\u626b\u63cf\u65f6\u901f\u5ea6\u5c31\u6b63\u5e38\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294537\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : Meltdown <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8c8c\u4f3c\u7528 tcmalloc \u4e5f\u4f1a\u6709\u7c7b\u4f3c\u95ee\u9898\uff1f\u5206\u914d\u5668\u7533\u8bf7\u4e86\u5185\u5b58\u5185\u6838\u6ca1\u6709\u56de\u6536                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294538\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @Meltdown \u4f1a\u7684\uff0c\u4e00\u822c api \u5c42\u7684\u5b9e\u73b0\u90fd\u4f1a\u7ef4\u62a4\u6bd4\u8f83\u590d\u6742\u7684\u5185\u5b58\u7ba1\u7406\uff0c\u627e os<br \/>\u5206\u914d\u548c\u56de\u6536\u5f00\u9500\u5f88\u5927\uff0c\u4e0d\u4f1a\u6bcf\u6b21\u90fd\u7a7f\u900f\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294539\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : sagaxu <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             JVM \u4e5f\u6709\u7c7b\u4f3c\u7279\u6027\uff0c\u5ef6\u8fdf\u91ca\u653e                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294540\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @gemini767 \u53ef\u4ee5\u4e86\u89e3\u4e00\u4e0b docker \u5e95\u5c42\u7684\u5b9e\u73b0\uff08 cgroup \uff09\uff0c\u4e25\u683c\u6765\u8bf4\u4e0d\u662f\u5171\u4eab kernel                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294541\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @bsidb \u5bf9\uff0c\u63a8\u8350\u770b\u90a3\u7bc7 What a C programmer should know about memory\uff0c\u53ef\u4ee5\u641c\u5230\u4e2d\u6587\u7ffb\u8bd1\u7684\u7248\u672c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294542\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : azh7138m <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4e3a\u5565\u4e0d\u53d1 ByteKM \uff08\u624b\u52a8\u72d7\u5934                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294543\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @azh7138m \u548c\u5927\u4f6c\u4eec\u76f8\u6bd4\uff0c\u611f\u89c9\u5199\u5f97\u6bd4\u8f83\u6c34\uff0c\u4e0d\u6562\u53bb\u88c5\u903c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294544\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @sagaxu \u5bf9\uff0c\u5e95\u4e0b\u539f\u7406\u90fd\u4e00\u6837\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294545\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : bitdepth <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             malloc()\u4e26\u4e0d\u6703\u6e05\u7a7a page \u5167\u5bb9\u5427\uff1f calloc()\u624d\u6709                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294546\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : fcoolish <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u611f\u8c22\u5206\u4eab                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294547\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : hushao <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u786e\u8ba4\u8fc7\u773c\u795e\uff0c\u5927\u4f6c\u662f\u5728\u6c34\u62db\u8058\u6587                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294548\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @bitdepth \u55ef\uff0c\u5bf9\uff0c\u4f46\u662f\u6211\u8bf4\u7684\u4e0d\u662f malloc \u6e05\u7a7a page \u5185\u5bb9\uff0c\u662f\u8bf4 OS \u7ed9\u7684 page \u662f\u5168\u96f6\u7684\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u66b4\u9732\u5176\u4ed6\u8fdb\u7a0b\u7684\u6570\u636e\uff0c\u6709\u5b89\u5168\u98ce\u9669\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294549\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : buffzty <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u80fd\u4e0d\u80fd\u522b\u5199\u7684\u8ddf\u77e5\u4e4e\u4e00\u6837?                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294550\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : cydian <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021 \u8fd9\u6837\u7684\u4e8c\u7ef4\u7801\u5982\u4f55\u751f\u6210\u5462\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294551\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @cydian google \u641c\u4e00\u4e0b qr code ascii \u6709\u51e0\u4e2a\u63d0\u4f9b\u5728\u7ebf\u751f\u6210\u7684\u670d\u52a1\u3002<\/p>\n<p>linux \u4e0b\u4e5f\u6709\u4e2a libqrencode3 \u53ef\u4ee5\u641e\u8fd9\u4e2a\uff0cgoogle-authenticator \u5c31\u662f\u7528\u5b83\u6765\u751f\u6210\u7ec8\u7aef\u4e0b\u7684 qrcode \u7684\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294552\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @buffzty \u90a3\u4f60\u89c9\u5f97\u5199\u6210\u4ec0\u4e48\u6837\u66f4\u597d\u5462\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294553\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : tkl <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6700\u70e6\u8fd9\u79cd\u5230\u5904\u8868\u60c5\u5305\uff0c\u7ed3\u5c3e\u516c\u4f17\u53f7\u7684\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294554\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @tkl \u611f\u8c22\u770b\u5230\u7ed3\u5c3e\uff0c\u6211\u7167\u987e\u4e0d\u5230\u6240\u6709\u4eba\u53e3\u5473\uff0c\u6211\u81ea\u5df1\u5199\u5f97\u5f00\u5fc3\u5c31\u884c\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294555\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : hcivincentchan <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4f60\u662f\u5934\u6761\u7684\u5427\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294556\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : Arnie97 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u611f\u8c22\u79d1\u666e\uff0ctag \u5f88\u7075\u6027                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294557\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : gemini767 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021 \u6211\u660e\u767d\u4f60\u7684\u610f\u601d\uff0c\u4f46\u662f\u6211\u8bf4\u7684\u662f\u5171\u4eab\u7684\u5b9e\u73b0\uff0c\u800c\u975e\u5171\u4eab\u8d44\u6e90\uff0c\u4e5f\u5c31\u662f\u6211\u6700\u521d\u7591\u95ee\u591a\u7248\u672c kernel \u95ee\u9898                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294558\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @Arnie97 \u54c8\u54c8\u54c8 tag \u786e\u5b9e\u5f88\u201c\u7075\u201d                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294559\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @hcivincentchan \u6700\u540e\u7684\u5e7f\u544a\u8fd8\u4e0d\u8db3\u4ee5\u8bf4\u660e\u5417                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294560\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : mahone3297 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5f88\u4e0d\u9519\u7684\u5206\u4eab\uff0c\u8d5e<br \/>\u4e34\u65f6\u89e3\u51b3\u65b9\u6848\uff0c\u5e94\u8be5\u662f\u4e0a\u9762\u8bf4\u7684\uff0c\u52a0\u53c2\u6570\uff0c\u4ecd\u7136\u7528\u8001\u7684 MADV_DONTNEED \u65b9\u5f0f<br \/>\u4f46\uff0c\u65e2\u7136 go \u5347\u7ea7\u4e86\uff0c\u9ed8\u8ba4\u91c7\u7528\u4e86\u65b0\u7684\u65b9\u5f0f MADV_FREE\uff0c\u5e94\u8be5\u662f\u65b0\u7684\u65b9\u6848\u66f4\u597d\uff08\u4e8b\u5b9e\u4e0a\u4e5f\u786e\u5b9e\u662f\uff0cgc \u6548\u7387\u66f4\u9ad8\uff09\uff0c\u90a3\uff0c\u957f\u4e45\u65b9\u6848\u5e94\u8be5\u662f\u80fd\u8bfb\u5230\u6b63\u786e\u7684\u503c\uff08 go \u672a\u5f52\u8fd8\u7ed9 os \u7684\u90e8\u5206\uff09\u6bd4\u8f83\u597d                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294561\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @mahone3297 \u5bf9\uff0c\u4f46\u662f\u8fd9\u9700\u8981\u5185\u6838\u63d0\u4f9b\u66f4\u7cbe\u7ec6\u7684\u6570\u636e\uff0c\u4ee5\u53ca\u6574\u4e2a\u76d1\u63a7\u94fe\u8def\u7684\u76f8\u5173\u6539\u9020\uff0c\u5468\u671f\u4f1a\u6bd4\u8f83\u957f\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294562\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : k9982874 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6211\u64e6\uff0c\u8fd9\u4e2a\u5468\u672b\u521a\u78b0\u4e0a\u4e86\u8fd9\u4e2a\u95ee\u9898\uff0c\u6ca1\u60f3\u5230\u901b v2\u201c\u6361\u5230\u201d\u4e86\u7b54\u6848\u3002\u611f\u8c22\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294563\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : saberlong <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294564\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : saberlong <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021 <br \/>\u521a\u624d\u6d4f\u89c8\u5668\u5361\u4e86\u4e0b\uff0c\u7adf\u7136\u76f4\u63a5\u53d1\u51fa\u53bb\u4e86.<br \/>\u501f\u5730\u53d1\u4e00\u4e2a\u7c7b\u4f3c\u7684\u68d8\u624b\u7684\u95ee\u9898\uff0c\u81f3\u4eca\u6ca1\u6709\u627e\u5230\u7b54\u6848\u3002<br \/>\u5185\u5b58\u968f\u7740\u8fd0\u884c\u4e0d\u65ad\u589e\u52a0\u3002\u5f00\u59cb\u4ee5\u4e3a\u5e38\u89c1\u7684\u6cc4\u6f0f\u95ee\u9898\uff0c\u4f46\u5e76\u4e0d\u662f\u90a3\u4e48\u7b80\u5355\u3002<br \/>\u7248\u672c\uff1ago1.13.x \u3002\u53bb\u5e74\u7684\u4e8b x \u591a\u5c11\u5fd8\u8bb0\u4e86\u3002<br \/>\u524d\u63d0\uff1awindow \u4e0b\u4ea4\u53c9\u7f16\u8bd1\u6210 linux \u65f6\u4f1a\u51fa\u73b0\u3002 \u6211\u7684\u662f linux \u7cfb\u7edf\uff0c\u7f16\u8bd1\u51fa\u6765\u6ca1\u95ee\u9898\u3002<br \/>\u8c03\u67e5\u60c5\u51b5: pprof \u89c2\u5bdf inuse_space \u80fd\u89c2\u6d4b\u5230\u5185\u5b58\u5360\u7528\uff0c\u4f46\u662f\u663e\u793a\u53ea\u6709\u4e00\u6761\u8bb0\u5f55\uff0c\u662f runtime.systemstack \u7684\u5360\u7528\uff0c\u4f4d\u7f6e\u53d1\u751f\u5728 asm_amd64.s \u7684 370 \u4f4d\u7f6e\u3002 \u529f\u80fd\u662f&#8221;call target function&#8221;\uff0c\u6267\u884c CALL DI \u3002\u5230\u8fd9\u4ee5\u4e3a\u662f\u8c03\u7528\u51fd\u6570\u6808\u7684\u95ee\u9898\uff0c\u68c0\u67e5\u7a0b\u5e8f\u540e\u6392\u9664\u3002 \u89c2\u5bdf go \u7a0b\uff0c\u4ec5 pprof \u6240\u4f7f\u7528\u7684 go \u7a0b\u3001\u4e00\u4e2a tcp \u76d1\u542c go \u7a0b\u4ee5\u53ca main \u7a0b\u7b49\u5f85 signal \u3002<br \/>\u901a\u8fc7 linux \u4e0b\u7684\u5206\u6790\u4e00\u4e9b\u5206\u6790\u5de5\u5177\u6ca1\u627e\u5230\u5934\u7eea\u3002\u6839\u636e\u53ef\u80fd\u6027\u731c\u6d4b\u53bb\u770b\u4e86 runtime \u6e90\u7801\u4e5f\u6ca1\u80fd\u5b9a\u4f4d\u3002<\/p>\n<p>\u6700\u540e,\u4e0d\u77e5\u9053\u600e\u4e48\u56de\u4e8b\uff0c\u5b83\u597d\u4e86\u3002\u539f\u672c\u6bcf\u6b21\u5fc5\u73b0\u7684\u95ee\u9898\uff0c\u5b83\u7adf\u7136\u81ea\u5df1\u597d\u4e86\u3002\u7136\u540e\u5c31\u6ca1\u6cd5\u8ffd\u67e5\u4e86\u3002<br \/>\u4e0d\u77e5\u9053\u8fd9\u91cc\u7684\u5404\u4f4d\u6709\u4ec0\u4e48\u5934\u7eea                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294565\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zhoudaiyu <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6392\u67e5\u95ee\u9898\u5f88\u723d\uff0c\u6709\u65f6\u5019\u89c9\u5f97\u81ea\u5df1\u5316\u8eab\u67ef\u5357 \/doge                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294566\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : heyhumor <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4f60\u56fe\u771f\u591a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294567\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : dreamage <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u786c\u6838                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294568\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : mentalkiller <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6709\u4e00\u8bf4\u4e00\uff0c\u5b57\u8282\u7684\u62db\u8058\u5e16\u6bd4\u963f\u91cc\u7684\u62db\u8058\u5e16\u9ad8\u5230\u4e0d\u77e5\u9053\u54ea\u91cc\u53bb\u4e86\u3002<br \/>\u81f3\u5c11\u8ba9\u6211\u4e0d\u6392\u65a5\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294569\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : lrh3321 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u786c\u6838\u62db\u8058\u5e16                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294570\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : jonnn <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4f60\u4e09\u6708\u4efd\u53d1\u6211\u5c31\u4e0d\u7528\u91cd\u65b0\u8e29\u4e00\u904d\u4e86 <img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/2rPV8B6J-3.png\" alt=\"\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8\"> <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294571\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @saberlong \u73b0\u573a\u6ca1\u6709\u4e86\u53ef\u80fd\u662f\u6bd4\u8f83\u96be\u67e5 \uff0c\u5982\u679c\u8fd8\u6709\u73b0\u573a\u7684\u8bdd\uff0c\u4e0a\u9762\u8bf4\u7684 GODEBUG=madvdontneed=1 \u53ef\u4ee5\u8bd5\u8bd5\u3002<\/p>\n<p>\u53e6\u5916\u5bf9\u4e8e\u5f88\u96be\u5b9a\u4f4d\u7684\u95ee\u9898\uff0c\u6211\u8fd8\u4f1a\u7528\u5c1d\u8bd5\u5220\u6389\u65e0\u5173\u7684\u903b\u8f91\uff0c\u627e\u5230\u53ef\u80fd\u4f1a\u5bfc\u81f4\u95ee\u9898\u7684\u6700\u5c0f\u96c6\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294572\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @jonnn \u55ef\uff0c\u8fd9\u4e2a\u5751\u6709\u70b9\u504f\u95e8\uff0c\u6211\u4eec\u5382\u5185\u53bb\u5e74 7 \u6708\u4efd\u5c31\u5df2\u7ecf\u6709\u56e2\u961f\u8e29\u8fc7\u4e86\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294573\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : saberlong <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021 \u6211\u4e5f\u5e0c\u671b\u80fd\u590d\u73b0\u3002\u6700\u5c0f\u96c6\u5df2\u7ecf\u5728\u505a\u4e86\uff0c\u53ea\u4fdd\u7559\u4e86\u63cf\u8ff0\u4e2d\u7684\u51e0\u4e2a go \u7a0b\u3002runtime.systemstack \u548c\u6c47\u7f16\u7684\u51fd\u6570\u8c03\u7528 CALL DI \u7684\u4f7f\u7528\u8303\u56f4\u592a\u5e7f\u51e0\u4e4e\u6ca1\u6709\u5e2e\u52a9\u3002\u56e0\u4e3a pprof \u770b\u4e0d\u5230\u5360\u7528\u7684\u5bf9\u8c61\uff0c\u53bb\u5e74\u540e\u6765\u662f\u5f80\u8c03\u7528\u51fd\u6570\u65f6\u5f15\u8d77\u7684 go \u7a0b\u6269\u6808\u65b9\u5411\u53bb\u67e5\u7684\u3002\u540c\u4e8b\u5f00\u53d1\u4e2d\u7684\u4ee3\u7801\uff0c\u6bcf\u5929\u62bd\u7a7a\u6392\u67e5\u7684\uff0c\u53ef\u60dc\u540e\u6765\u4e0d\u80fd\u590d\u73b0\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294574\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : buffzty <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @felix021 \u5230\u5904\u8868\u60c5\u5305,\u5404\u79cd\u82b1\u91cc\u80e1\u54e8 ,\u7b80\u5355\u7684\u8bf4\u660e\u4e0d\u884c\u5417, \u5c31\u8ddf\u88c5\u4e4e\u90a3\u79cd\u56de\u7b54\u4e00\u6837.\u660e\u660e\u80fd\u4e00\u4e24\u767e\u5b57\u56de\u7b54\u5b8c\u7684 \u975e\u5e38\u5199\u4e2a\u4e24\u5343\u5b57\u56fe\u6587 \u771f\u5fc3\u4e0d\u559c\u6b22.\u4e0d\u8fc7\u4f60\u968f\u610f \u6211\u53ea\u662f\u4e0d\u60f3 v2 \u77e5\u4e4e\u5316                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294575\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : Oysmart <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u9700\u8981\u7684\u5c31\u662f\u8fd9\u79cd\u5206\u6790\u548c\u89e3\u51b3\u95ee\u9898\u7684\u65b9\u6cd5\u3002\u4f18\u79c0\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294576\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @buffzty \u8fd9\u662f\u901a\u8fc7\u5c11\u91cf\u591a\u6b21\u7684\u6b63\u53cd\u9988\u63d0\u9ad8\u8bfb\u8005\u9605\u8bfb\u5174\u8da3\u7684\u4e00\u79cd\u65b9\u6cd5\uff0c\u5168\u90fd\u662f\u6587\u5b57\u5e72\u5df4\u5df4\u7684\u5bf9\u4e8e\u5927\u591a\u6570\u4eba\u66f4\u5bb9\u6613 TLDR \u3002<\/p>\n<p>\u8fd9\u4e2a\u95ee\u9898\u4e00\u4e24\u767e\u5b57\u80fd\u4e0d\u80fd\u8bf4\u5f97\u5b8c\uff0c\u53d6\u51b3\u4e8e\u8bfb\u8005\u7684\u60c5\u51b5\uff0crelease notes \u91cc\u5012\u662f\u5f88\u7b80\u6d01\uff0c\u4e00\u6b21\u5c31\u80fd\u770b\u61c2\u7684\u6709\u591a\u5c11\u5462\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294577\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @buffzty \u4f60\u53ef\u4ee5\u6362\u4e2a\u89c6\u89d2\uff0c\u5927\u591a\u6570\u4eba\u6765 v2 \u4e0d\u662f\u6765\u5b66\u4e60\uff0c\u662f\u6765\u6d88\u9063\u7684\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294578\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : freefcw <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4e0d\u9519\u4e0d\u9519\u3002\u3002\u3002\u4e0d\u8fc7\u8fd9\u4e2a\u786e\u5b9e\u662f\u6709\u70b9\u5751                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294579\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : freefcw <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5bf9\u4e8e\u5185\u5b58\u8fd9\u5757\u7684\u4f7f\u7528\uff0c\u4e00\u822c\u7528\u6237\u90fd\u662f\u9ed1\u76d2\uff0c\u5f88\u6709\u70b9\u9ebb\u70e6                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294580\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : freefcw <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             c\/c++\u8fd9\u79cd\u53cd\u800c\u662f\u5f00\u53d1\u4eba\u5458\u6700\u80fd\u638c\u63a7\u7684\u3002\u3002\u4f46\u4e5f\u662f\u6700\u96be\u7684<\/p>\n<p>go \u548c java \u7b49\u5bf9\u8fd9\u4e00\u5757\u505a\u4e86\u5c4f\u853d\u548c\u5c01\u88c5\uff0c\u662f\u597d\u4e8b\u4e5f\u662f\u574f\u4e8b\uff0c\u4e0d\u8fc7\u4e0d\u4e86\u89e3\u5e95\u5c42\u7ec8\u7a76\u662f\u6709\u4e9b\u95ee\u9898\u96be\u4ee5\u89e3\u51b3\u7684                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294581\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : felix021 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @freefcw \u55ef\uff0c\u800c\u4e14\u56e0\u4e3a runtime \u66f4\u65b0\u5f88\u5feb\uff0c\u5f88\u591a\u77e5\u8bc6\u8fc7\u671f\u4e5f\u5f88\u5feb\uff0c\u5e74\u7eaa\u5927\u4e86\u5c31\u5bb9\u6613\u8ddf\u4e0d\u4e0a\u2026\u2026                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294582\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : Wirbelwind <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5b66\u4e60\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294583\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : Yyyye <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8c22\u8c22\u4e3b\u5206\u4eab\u8fd9\u4e48\u6709\u8da3\u7684\u8fc7\u7a0b\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294584\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : monsterxx03 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @saberlong \u6211\u5199\u8fc7\u4e00\u4e2a\u5de5\u5177, \u53ef\u4ee5 dump runtime heap \u4e0d\u540c size \u5bf9\u8c61\u7684\u5206\u914d\u60c5\u51b5(\u5f53\u7136\u8fd8\u662f\u6ca1\u529e\u6cd5\u77e5\u9053\u5177\u4f53\u4ec0\u4e48\u5bf9\u8c61), \u8981\u80fd\u590d\u73b0\u53ef\u4ee5\u8dd1\u51e0\u6b21\u770b\u4e0b\u662f\u4ec0\u4e48 size \u7684\u5bf9\u8c61\u5206\u914d\u5728\u589e\u957f<\/p>\n<p>https:\/\/github.com\/monsterxx03\/gospy#heap                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"1294585\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : ms2008 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u76d1\u63a7\u7cfb\u7edf\u770b\u8d77\u6765\u591f\u8001\u7684\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u8e29\u5751\u8bb0\uff1a go \u670d\u52a1\u5185\u5b58\u66b4\u6da8 \u8cc7\u6df1&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/90474"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=90474"}],"version-history":[{"count":1,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/90474\/revisions"}],"predecessor-version":[{"id":90476,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/90474\/revisions\/90476"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=90474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=90474"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=90474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}