{"id":126538,"date":"2020-01-20T00:01:11","date_gmt":"2020-01-19T16:01:11","guid":{"rendered":"http:\/\/4563.org\/?p=126538"},"modified":"2020-01-20T00:01:11","modified_gmt":"2020-01-19T16:01:11","slug":"ethtool-%e5%8e%9f%e7%90%86%e4%bb%8b%e7%bb%8d%e5%92%8c%e8%a7%a3%e5%86%b3%e7%bd%91%e5%8d%a1%e4%b8%a2%e5%8c%85%e6%8e%92%e6%9f%a5%e6%80%9d%e8%b7%af","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=126538","title":{"rendered":"ethtool \u539f\u7406\u4ecb\u7ecd\u548c\u89e3\u51b3\u7f51\u5361\u4e22\u5305\u6392\u67e5\u601d\u8def"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  ethtool \u539f\u7406\u4ecb\u7ecd\u548c\u89e3\u51b3\u7f51\u5361\u4e22\u5305\u6392\u67e5\u601d\u8def               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : wsgzao <\/span>  <span><i><\/i> 12<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<h2>\u524d\u8a00<\/h2>\n<p>\u4e4b\u524d\u8bb0\u5f55\u8fc7\u5904\u7406\u56e0\u4e3a LVS \u7f51\u5361\u6d41\u91cf\u8d1f\u8f7d\u8fc7\u9ad8\u5bfc\u81f4\u8f6f\u4e2d\u65ad\u53d1\u751f\u4e22\u5305\u7684\u95ee\u9898\uff0cRPS \u548c RFS \u7f51\u5361\u591a\u961f\u5217\u6027\u80fd\u8c03\u4f18\u5b9e\u8df5\uff0c\u5bf9\u4e00\u822c\u4eba\u6765\u8bf4\u538b\u529b\u4e0d\u5927\u7684\u60c5\u51b5\u4e0b\u5176\u5b9e\u78b0\u89c1\u7684\u6982\u7387\u5e76\u4e0d\u9ad8\u3002\u8fd9\u6b21\u60f3\u5206\u4eab\u7684\u8bdd\u9898\u662f\u6bd4\u8f83\u5e38\u89c1\u670d\u52a1\u5668\u7f51\u5361\u4e22\u5305\u73b0\u8c61\u6392\u67e5\u601d\u8def\uff0c\u5982\u679c\u4f60\u662f\u60f3\u4e86\u89e3\u70b9\u5bf9\u70b9\u7684\u4e22\u5305\u89e3\u51b3\u601d\u8def\u6d89\u53ca\u9762\u53ef\u80fd\u5c31\u6bd4\u8f83\u5e7f\uff0c\u4e0d\u59a8\u5148\u53c2\u8003\u4e4b\u524d\u7684\u6587\u7ae0\u5982\u4f55\u4f7f\u7528 MTR \u8bca\u65ad\u7f51\u7edc\u95ee\u9898\uff0c\u5bf9\u4e8e Linux \u5e38\u7528\u7684\u7f51\u5361\u4e22\u5305\u5206\u6790\u5de5\u5177\u81ea\u7136\u662f ethtool \u3002<\/p>\n<h2>\u66f4\u65b0\u5386\u53f2<\/h2>\n<p>2020 \u5e74 06 \u6708 22 \u65e5 &#8211; \u521d\u7a3f<\/p>\n<p>\u9605\u8bfb\u539f\u6587 &#8211; https:\/\/wsgzao.github.io\/post\/ethtool\/<\/p>\n<h2>ethtool \u7b80\u4ecb<\/h2>\n<p>ethtool &#8211; utility for controlling network drivers and hardware<\/p>\n<p>ethtool is the standard Linux utility for controlling network drivers and hardware, particularly for wired Ethernet devices. It can be used to:<\/p>\n<ul>\n<li>Get identification and diagnostic information<\/li>\n<li>Get extended device statistics<\/li>\n<li>Control speed, duplex, autonegotiation and flow control for Ethernet devices<\/li>\n<li>Control checksum offload and other hardware offload features<\/li>\n<li>Control DMA ring sizes and interrupt moderation<\/li>\n<li>Control receive queue selection for multiqueue devices<\/li>\n<li>Upgrade firmware in flash memory<\/li>\n<\/ul>\n<p>Most features are dependent on support in the specific driver. See the manual page for full information.<\/p>\n<p>ethtool \u7528\u4e8e\u67e5\u770b\u548c\u4fee\u6539\u7f51\u7edc\u8bbe\u5907\uff08\u5c24\u5176\u662f\u6709\u7ebf\u4ee5\u592a\u7f51\u8bbe\u5907\uff09\u7684\u9a71\u52a8\u53c2\u6570\u548c\u786c\u4ef6\u8bbe\u7f6e\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u66f4\u6539\u4ee5\u592a\u7f51\u5361\u7684\u53c2\u6570\uff0c\u5305\u62ec\u81ea\u52a8\u534f\u5546\u3001\u901f\u5ea6\u3001\u53cc\u5de5\u548c\u5c40\u57df\u7f51\u5524\u9192\u7b49\u53c2\u6570\u3002\u901a\u8fc7\u5bf9\u4ee5\u592a\u7f51\u5361\u7684\u914d\u7f6e\uff0c\u4f60\u7684\u8ba1\u7b97\u673a\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u6709\u6548\u5730\u8fdb\u884c\u901a\u4fe1\u3002\u8be5\u5de5\u5177\u63d0\u4f9b\u4e86\u8bb8\u591a\u5173\u4e8e\u63a5\u9a73\u5230\u4f60\u7684 Linux \u7cfb\u7edf\u7684\u4ee5\u592a\u7f51\u8bbe\u5907\u7684\u4fe1\u606f\u3002<\/p>\n<h2>\u4e86\u89e3\u63a5\u6536\u6570\u636e\u5305\u7684\u6d41\u7a0b<\/h2>\n<blockquote>\n<p>\u8fd9\u91cc\u6458\u53d6\u4e86\u7f8e\u56e2\u6280\u672f\u56e2\u961f\u7684\u5206\u6790\uff0c\u5728\u6b64\u8868\u793a\u611f\u8c22<\/p>\n<\/blockquote>\n<p>\u63a5\u6536\u6570\u636e\u5305\u662f\u4e00\u4e2a\u590d\u6742\u7684\u8fc7\u7a0b\uff0c\u6d89\u53ca\u5f88\u591a\u5e95\u5c42\u7684\u6280\u672f\u7ec6\u8282\uff0c\u4f46\u5927\u81f4\u9700\u8981\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u7f51\u5361\u6536\u5230\u6570\u636e\u5305\u3002<\/li>\n<li>\u5c06\u6570\u636e\u5305\u4ece\u7f51\u5361\u786c\u4ef6\u7f13\u5b58\u8f6c\u79fb\u5230\u670d\u52a1\u5668\u5185\u5b58\u4e2d\u3002<\/li>\n<li>\u901a\u77e5\u5185\u6838\u5904\u7406\u3002<\/li>\n<li>\u7ecf\u8fc7 TCP\/IP \u534f\u8bae\u9010\u5c42\u5904\u7406\u3002<\/li>\n<li>\u5e94\u7528\u7a0b\u5e8f\u901a\u8fc7 <code>read()<\/code> \u4ece <code>socket buffer<\/code> \u8bfb\u53d6\u6570\u636e\u3002<\/li>\n<\/ol>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/06\/20200628_5ef9045d896f7.png\" alt=\"ethtool \u539f\u7406\u4ecb\u7ecd\u548c\u89e3\u51b3\u7f51\u5361\u4e22\u5305\u6392\u67e5\u601d\u8def\" \/><\/p>\n<h3>\u5c06\u7f51\u5361\u6536\u5230\u7684\u6570\u636e\u5305\u8f6c\u79fb\u5230\u4e3b\u673a\u5185\u5b58\uff08 NIC \u4e0e\u9a71\u52a8\u4ea4\u4e92\uff09<\/h3>\n<p>NIC \u5728\u63a5\u6536\u5230\u6570\u636e\u5305\u4e4b\u540e\uff0c\u9996\u5148\u9700\u8981\u5c06\u6570\u636e\u540c\u6b65\u5230\u5185\u6838\u4e2d\uff0c\u8fd9\u4e2d\u95f4\u7684\u6865\u6881\u662f <code>rx ring buffer<\/code>\u3002\u5b83\u662f\u7531 NIC \u548c\u9a71\u52a8\u7a0b\u5e8f\u5171\u4eab\u7684\u4e00\u7247\u533a\u57df\uff0c\u4e8b\u5b9e\u4e0a\uff0c<code>rx ring buffer<\/code> \u5b58\u50a8\u7684\u5e76\u4e0d\u662f\u5b9e\u9645\u7684 packet \u6570\u636e\uff0c\u800c\u662f\u4e00\u4e2a\u63cf\u8ff0\u7b26\uff0c\u8fd9\u4e2a\u63cf\u8ff0\u7b26\u6307\u5411\u4e86\u5b83\u771f\u6b63\u7684\u5b58\u50a8\u5730\u5740\uff0c\u5177\u4f53\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u9a71\u52a8\u5728\u5185\u5b58\u4e2d\u5206\u914d\u4e00\u7247\u7f13\u51b2\u533a\u7528\u6765\u63a5\u6536\u6570\u636e\u5305\uff0c\u53eb\u505a <code>sk_buffer<\/code>\uff1b<\/li>\n<li>\u5c06\u4e0a\u8ff0\u7f13\u51b2\u533a\u7684\u5730\u5740\u548c\u5927\u5c0f\uff08\u5373\u63a5\u6536\u63cf\u8ff0\u7b26\uff09\uff0c\u52a0\u5165\u5230 <code>rx ring buffer<\/code>\u3002\u63cf\u8ff0\u7b26\u4e2d\u7684\u7f13\u51b2\u533a\u5730\u5740\u662f DMA \u4f7f\u7528\u7684\u7269\u7406\u5730\u5740\uff1b<\/li>\n<li>\u9a71\u52a8\u901a\u77e5\u7f51\u5361\u6709\u4e00\u4e2a\u65b0\u7684\u63cf\u8ff0\u7b26\uff1b<\/li>\n<li>\u7f51\u5361\u4ece <code>rx ring buffer<\/code> \u4e2d\u53d6\u51fa\u63cf\u8ff0\u7b26\uff0c\u4ece\u800c\u83b7\u77e5\u7f13\u51b2\u533a\u7684\u5730\u5740\u548c\u5927\u5c0f\uff1b<\/li>\n<li>\u7f51\u5361\u6536\u5230\u65b0\u7684\u6570\u636e\u5305\uff1b<\/li>\n<li>\u7f51\u5361\u5c06\u65b0\u6570\u636e\u5305\u901a\u8fc7 DMA \u76f4\u63a5\u5199\u5230 <code>sk_buffer<\/code> \u4e2d\u3002<\/li>\n<\/ol>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/06\/20200628_5ef90462d2276.png\" alt=\"ethtool \u539f\u7406\u4ecb\u7ecd\u548c\u89e3\u51b3\u7f51\u5361\u4e22\u5305\u6392\u67e5\u601d\u8def\" \/><\/p>\n<p>\u5f53\u9a71\u52a8\u5904\u7406\u901f\u5ea6\u8ddf\u4e0d\u4e0a\u7f51\u5361\u6536\u5305\u901f\u5ea6\u65f6\uff0c\u9a71\u52a8\u6765\u4e0d\u53ca\u5206\u914d\u7f13\u51b2\u533a\uff0cNIC \u63a5\u6536\u5230\u7684\u6570\u636e\u5305\u65e0\u6cd5\u53ca\u65f6\u5199\u5230 <code>sk_buffer<\/code>\uff0c\u5c31\u4f1a\u4ea7\u751f\u5806\u79ef\uff0c\u5f53 NIC \u5185\u90e8\u7f13\u51b2\u533a\u5199\u6ee1\u540e\uff0c\u5c31\u4f1a\u4e22\u5f03\u90e8\u5206\u6570\u636e\uff0c\u5f15\u8d77\u4e22\u5305\u3002\u8fd9\u90e8\u5206\u4e22\u5305\u4e3a <code>rx_fifo_errors<\/code>\uff0c\u5728 <code>\/proc\/net\/dev<\/code> \u4e2d\u4f53\u73b0\u4e3a fifo \u5b57\u6bb5\u589e\u957f\uff0c\u5728 ifconfig \u4e2d\u4f53\u73b0\u4e3a overruns \u6307\u6807\u589e\u957f\u3002<\/p>\n<h3>\u901a\u77e5\u7cfb\u7edf\u5185\u6838\u5904\u7406\uff08\u9a71\u52a8\u4e0e Linux \u5185\u6838\u4ea4\u4e92\uff09<\/h3>\n<p>\u8fd9\u4e2a\u65f6\u5019\uff0c\u6570\u636e\u5305\u5df2\u7ecf\u88ab\u8f6c\u79fb\u5230\u4e86 <code>sk_buffer<\/code> \u4e2d\u3002\u524d\u6587\u63d0\u5230\uff0c\u8fd9\u662f\u9a71\u52a8\u7a0b\u5e8f\u5728\u5185\u5b58\u4e2d\u5206\u914d\u7684\u4e00\u7247\u7f13\u51b2\u533a\uff0c\u5e76\u4e14\u662f\u901a\u8fc7 DMA \u5199\u5165\u7684\uff0c\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4f9d\u8d56 CPU \u76f4\u63a5\u5c06\u6570\u636e\u5199\u5230\u4e86\u5185\u5b58\u4e2d\uff0c\u610f\u5473\u7740\u5bf9\u5185\u6838\u6765\u8bf4\uff0c\u5176\u5b9e\u5e76\u4e0d\u77e5\u9053\u5df2\u7ecf\u6709\u65b0\u6570\u636e\u5230\u4e86\u5185\u5b58\u4e2d\u3002\u90a3\u4e48\u5982\u4f55\u8ba9\u5185\u6838\u77e5\u9053\u6709\u65b0\u6570\u636e\u8fdb\u6765\u4e86\u5462\uff1f\u7b54\u6848\u5c31\u662f\u4e2d\u65ad\uff0c\u901a\u8fc7\u4e2d\u65ad\u544a\u8bc9\u5185\u6838\u6709\u65b0\u6570\u636e\u8fdb\u6765\u4e86\uff0c\u5e76\u9700\u8981\u8fdb\u884c\u540e\u7eed\u5904\u7406\u3002<\/p>\n<p>\u63d0\u5230\u4e2d\u65ad\uff0c\u5c31\u6d89\u53ca\u5230\u786c\u4e2d\u65ad\u548c\u8f6f\u4e2d\u65ad\uff0c\u9996\u5148\u9700\u8981\u7b80\u5355\u4e86\u89e3\u4e00\u4e0b\u5b83\u4eec\u7684\u533a\u522b\uff1a<\/p>\n<ul>\n<li>\u786c\u4e2d\u65ad\uff1a \u7531\u786c\u4ef6\u81ea\u5df1\u751f\u6210\uff0c\u5177\u6709\u968f\u673a\u6027\uff0c\u786c\u4e2d\u65ad\u88ab CPU \u63a5\u6536\u540e\uff0c\u89e6\u53d1\u6267\u884c\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u3002\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u53ea\u4f1a\u5904\u7406\u5173\u952e\u6027\u7684\u3001\u77ed\u65f6\u95f4\u5185\u53ef\u4ee5\u5904\u7406\u5b8c\u7684\u5de5\u4f5c\uff0c\u5269\u4f59\u8017\u65f6\u8f83\u957f\u5de5\u4f5c\uff0c\u4f1a\u653e\u5230\u4e2d\u65ad\u4e4b\u540e\uff0c\u7531\u8f6f\u4e2d\u65ad\u6765\u5b8c\u6210\u3002\u786c\u4e2d\u65ad\u4e5f\u88ab\u79f0\u4e3a\u4e0a\u534a\u90e8\u5206\u3002<\/li>\n<li>\u8f6f\u4e2d\u65ad\uff1a \u7531\u786c\u4e2d\u65ad\u5bf9\u5e94\u7684\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u751f\u6210\uff0c\u5f80\u5f80\u662f\u9884\u5148\u5728\u4ee3\u7801\u91cc\u5b9e\u73b0\u597d\u7684\uff0c\u4e0d\u5177\u6709\u968f\u673a\u6027\u3002\uff08\u9664\u6b64\u4e4b\u5916\uff0c\u4e5f\u6709\u5e94\u7528\u7a0b\u5e8f\u89e6\u53d1\u7684\u8f6f\u4e2d\u65ad\uff0c\u4e0e\u672c\u6587\u8ba8\u8bba\u7684\u7f51\u5361\u6536\u5305\u65e0\u5173\u3002\uff09\u4e5f\u88ab\u79f0\u4e3a\u4e0b\u534a\u90e8\u5206\u3002<\/li>\n<\/ul>\n<p><strong>\u5f53 NIC \u628a\u6570\u636e\u5305\u901a\u8fc7 DMA \u590d\u5236\u5230\u5185\u6838\u7f13\u51b2\u533a <code>sk_buffer<\/code> \u540e\uff0cNIC \u7acb\u5373\u53d1\u8d77\u4e00\u4e2a\u786c\u4ef6\u4e2d\u65ad\u3002CPU \u63a5\u6536\u540e\uff0c\u9996\u5148\u8fdb\u5165\u4e0a\u534a\u90e8\u5206\uff0c\u7f51\u5361\u4e2d\u65ad\u5bf9\u5e94\u7684\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u662f\u7f51\u5361\u9a71\u52a8\u7a0b\u5e8f\u7684\u4e00\u90e8\u5206\uff0c\u4e4b\u540e\u7531\u5b83\u53d1\u8d77\u8f6f\u4e2d\u65ad\uff0c\u8fdb\u5165\u4e0b\u534a\u90e8\u5206\uff0c\u5f00\u59cb\u6d88\u8d39 <code>sk_buffer<\/code> \u4e2d\u7684\u6570\u636e\uff0c\u4ea4\u7ed9\u5185\u6838\u534f\u8bae\u6808\u5904\u7406\u3002<\/strong><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/06\/20200628_5ef9046816b09.png\" alt=\"ethtool \u539f\u7406\u4ecb\u7ecd\u548c\u89e3\u51b3\u7f51\u5361\u4e22\u5305\u6392\u67e5\u601d\u8def\" \/><\/p>\n<p>\u901a\u8fc7\u4e2d\u65ad\uff0c\u80fd\u591f\u5feb\u901f\u53ca\u65f6\u5730\u54cd\u5e94\u7f51\u5361\u6570\u636e\u8bf7\u6c42\uff0c\u4f46\u5982\u679c\u6570\u636e\u91cf\u5927\uff0c\u90a3\u4e48\u4f1a\u4ea7\u751f\u5927\u91cf\u4e2d\u65ad\u8bf7\u6c42\uff0cCPU \u5927\u90e8\u5206\u65f6\u95f4\u90fd\u5fd9\u4e8e\u5904\u7406\u4e2d\u65ad\uff0c\u6548\u7387\u5f88\u4f4e\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u73b0\u5728\u7684\u5185\u6838\u53ca\u9a71\u52a8\u90fd\u91c7\u7528\u4e00\u79cd\u53eb NAPI \uff08 new API \uff09\u7684\u65b9\u5f0f\u8fdb\u884c\u6570\u636e\u5904\u7406\uff0c\u5176\u539f\u7406\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a \u4e2d\u65ad + \u8f6e\u8be2\uff0c\u5728\u6570\u636e\u91cf\u5927\u65f6\uff0c\u4e00\u6b21\u4e2d\u65ad\u540e\u901a\u8fc7\u8f6e\u8be2\u63a5\u6536\u4e00\u5b9a\u6570\u91cf\u5305\u518d\u8fd4\u56de\uff0c\u907f\u514d\u4ea7\u751f\u591a\u6b21\u4e2d\u65ad\u3002<\/p>\n<h2>ifconfig \u89e3\u91ca<\/h2>\n<pre><code>[[email&#160;protected] ~]# ifconfig eth0 eth0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt; mtu 1500 inet 192.168.1.135 netmask 255.255.255.0 broadcast 192.168.1.255 inet6 fe80::20c:29ff:fe9b:52d3 prefixlen 64 scopeid 0x20&lt;link&gt; ether 00:0c:29:9b:52:d3 txqueuelen 1000 (Ethernet) RX packets 833 bytes 61846 (60.3 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 122 bytes 9028 (8.8 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 <\/code><\/pre>\n<p>(1) RX errors<\/p>\n<p>\u8868\u793a\u603b\u7684\u6536\u5305\u7684\u9519\u8bef\u6570\u91cf\uff0c\u8fd9\u5305\u62ec too-long-frames \u9519\u8bef\uff0cRing Buffer \u6ea2\u51fa\u9519\u8bef\uff0ccrc \u6821\u9a8c\u9519\u8bef\uff0c\u5e27\u540c\u6b65\u9519\u8bef\uff0cfifo overruns \u4ee5\u53ca missed pkg \u7b49\u7b49\u3002<\/p>\n<p>(2) RX dropped<\/p>\n<p>\u8868\u793a\u6570\u636e\u5305\u5df2\u7ecf\u8fdb\u5165\u4e86 Ring Buffer\uff0c\u4f46\u662f\u7531\u4e8e\u5185\u5b58\u4e0d\u591f\u7b49\u7cfb\u7edf\u539f\u56e0\uff0c\u5bfc\u81f4\u5728\u62f7\u8d1d\u5230\u5185\u5b58\u7684\u8fc7\u7a0b\u4e2d\u88ab\u4e22\u5f03\u3002<\/p>\n<p>(3) RX overruns<\/p>\n<p>\u8868\u793a\u4e86 fifo \u7684 overruns\uff0c\u8fd9\u662f\u7531\u4e8e Ring Buffer(aka Driver Queue) \u4f20\u8f93\u7684 IO \u5927\u4e8e kernel \u80fd\u591f\u5904\u7406\u7684 IO \u5bfc\u81f4\u7684\uff0c\u800c Ring Buffer \u5219\u662f\u6307\u5728\u53d1\u8d77 IRQ \u8bf7\u6c42\u4e4b\u524d\u7684\u90a3\u5757 buffer \u3002\u5f88\u660e\u663e\uff0coverruns \u7684\u589e\u5927\u610f\u5473\u7740\u6570\u636e\u5305\u6ca1\u5230 Ring Buffer \u5c31\u88ab\u7f51\u5361\u7269\u7406\u5c42\u7ed9\u4e22\u5f03\u4e86\uff0c\u800c CPU \u65e0\u6cd5\u5373\u4f7f\u7684\u5904\u7406\u4e2d\u65ad\u662f\u9020\u6210 Ring Buffer \u6ee1\u7684\u539f\u56e0\u4e4b\u4e00\uff0c\u4e0a\u9762\u90a3\u53f0\u6709\u95ee\u9898\u7684\u673a\u5668\u5c31\u662f\u56e0\u4e3a interruprs \u5206\u5e03\u7684\u4e0d\u5747\u5300(\u90fd\u538b\u5728 core0)\uff0c\u6ca1\u6709\u505a affinity \u800c\u9020\u6210\u7684\u4e22\u5305\u3002<\/p>\n<p>(4) RX frame<\/p>\n<p>\u8868\u793a misaligned \u7684 frames \u3002<\/p>\n<h2>\u7f51\u5361\u5de5\u4f5c\u539f\u7406<\/h2>\n<\/p>\n<blockquote>\n<p>\u5982\u679c\u4e0a\u9762\u63a5\u6536\u6570\u636e\u5305\u7684\u6d41\u7a0b\u89c9\u5f97\u4e0d\u591f\u8be6\u7ec6\u53ef\u4ee5\u518d\u770b\u7eaf\u6587\u5b57\u89e3\u91ca<\/p>\n<\/blockquote>\n<h3>\u7f51\u5361\u6536\u5305<\/h3>\n<p>\u7f51\u7ebf\u4e0a\u7684 packet \u9996\u5148\u88ab\u7f51\u5361\u83b7\u53d6\uff0c\u7f51\u5361\u4f1a\u68c0\u67e5 packet \u7684 CRC \u6821\u9a8c\uff0c\u4fdd\u8bc1\u5b8c\u6574\u6027\uff0c\u7136\u540e\u5c06 packet \u5934\u53bb\u6389\uff0c\u5f97\u5230 frame \u3002\u7f51\u5361\u4f1a\u68c0\u67e5 MAC \u5305\u5185\u7684\u76ee\u7684 MAC \u5730\u5740\uff0c\u5982\u679c\u548c\u672c\u7f51\u5361\u7684 MAC \u5730\u5740\u4e0d\u4e00\u6837\u5219\u4e22\u5f03(\u6df7\u6742\u6a21\u5f0f\u9664\u5916)\u3002<\/p>\n<p>\u7f51\u5361\u5c06 frame \u62f7\u8d1d\u5230\u7f51\u5361\u5185\u90e8\u7684 FIFO \u7f13\u51b2\u533a\uff0c\u89e6\u53d1\u786c\u4ef6\u4e2d\u65ad\u3002\uff08\u5982\u6709 ring buffer \u7684\u7f51\u5361\uff0c\u597d\u50cf frame \u53ef\u4ee5\u5148\u5b58\u5728 ring buffer \u91cc\u518d\u89e6\u53d1\u8f6f\u4ef6\u4e2d\u65ad\uff08\u4e0b\u7bc7\u6587\u7ae0\u5c06\u8be6\u7ec6\u89e3\u91ca Linux \u4e2d frame \u7684\u8d70\u5411\uff09\uff0cring buffer \u662f\u7f51\u5361\u548c\u9a71\u52a8\u7a0b\u5e8f\u5171\u4eab\uff0c\u662f\u8bbe\u5907\u91cc\u7684\u5185\u5b58\uff0c\u4f46\u662f\u5bf9\u64cd\u4f5c\u7cfb\u7edf\u662f\u53ef\u89c1\u7684\uff0c\u56e0\u4e3a\u770b\u5230 linux \u5185\u6838\u6e90\u7801\u91cc\u7f51\u5361\u9a71\u52a8\u7a0b\u5e8f\u662f\u4f7f\u7528 kcalloc \u6765\u5206\u914d\u7684\u7a7a\u95f4\uff0c\u6240\u4ee5 ring buffer \u4e00\u822c\u90fd\u6709\u4e0a\u9650\uff0c\u53e6\u5916\u8fd9\u4e2a ring buffer size\uff0c\u8868\u793a\u7684\u5e94\u8be5\u662f\u80fd\u5b58\u50a8\u7684 frame \u7684\u4e2a\u6570\uff0c\u800c\u4e0d\u662f\u5b57\u8282\u5927\u5c0f\u3002\u53e6\u5916\u6709\u4e9b\u7cfb\u7edf\u7684 ethtool \u547d\u4ee4 \u5e76\u4e0d\u80fd\u6539\u53d8 ring parameters \u6765\u8bbe\u7f6e ring buffer \u7684\u5927\u5c0f\uff0c\u6682\u65f6\u4e0d\u77e5\u9053\u4e3a\u4ec0\u4e48\uff0c\u53ef\u80fd\u662f\u9a71\u52a8\u4e0d\u652f\u6301\u3002\uff09<\/p>\n<p>\u7f51\u5361\u9a71\u52a8\u7a0b\u5e8f\u901a\u8fc7\u786c\u4e2d\u65ad\u5904\u7406\u51fd\u6570\uff0c\u6784\u5efa sk_buff\uff0c\u628a frame \u4ece\u7f51\u5361 FIFO \u62f7\u8d1d\u5230\u5185\u5b58 skb \u4e2d\uff0c\u63a5\u4e0b\u6765\u4ea4\u7ed9\u5185\u6838\u5904\u7406\u3002\uff08\u652f\u6301 napi \u7684\u7f51\u5361\u5e94\u8be5\u662f\u76f4\u63a5\u653e\u5728 ring buffer\uff0c\u4e0d\u89e6\u53d1\u786c\u4e2d\u65ad\uff0c\u76f4\u63a5\u4f7f\u7528\u8f6f\u4e2d\u65ad\uff0c\u62f7\u8d1d ring buffer \u91cc\u7684\u6570\u636e\uff0c\u76f4\u63a5\u8f93\u9001\u7ed9\u4e0a\u5c42\u5904\u7406\uff0c\u6bcf\u4e2a\u7f51\u5361\u5728\u4e00\u6b21\u8f6f\u4e2d\u65ad\u5904\u7406\u8fc7\u7a0b\u80fd\u5904\u7406 weight \u4e2a frame \uff09<\/p>\n<p>\u8fc7\u7a0b\u4e2d\uff0c\u7f51\u5361\u82af\u7247\u5bf9 frame \u8fdb\u884c\u4e86 MAC \u8fc7\u6ee4\uff0c\u4ee5\u51cf\u5c0f\u7cfb\u7edf\u8d1f\u8377\u3002\uff08\u9664\u4e86\u6df7\u6742\u6a21\u5f0f\uff09<\/p>\n<h3>\u7f51\u5361\u53d1\u5305<\/h3>\n<p>\u7f51\u5361\u9a71\u52a8\u7a0b\u5e8f\u5c06 IP \u5305\u6dfb\u52a0 14 \u5b57\u8282\u7684 MAC \u5934\uff0c\u6784\u6210 frame \uff08\u6682\u65e0 CRC \uff09\u3002Frame \uff08\u6682\u65e0 CRC \uff09\u4e2d\u542b\u6709\u53d1\u9001\u7aef\u548c\u63a5\u6536\u7aef\u7684 MAC \u5730\u5740\uff0c\u7531\u4e8e\u662f\u9a71\u52a8\u7a0b\u5e8f\u521b\u5efa MAC \u5934\uff0c\u6240\u4ee5\u53ef\u4ee5\u968f\u4fbf\u8f93\u5165\u5730\u5740\uff0c\u4e5f\u53ef\u4ee5\u8fdb\u884c\u4e3b\u673a\u4f2a\u88c5\u3002<\/p>\n<p>\u9a71\u52a8\u7a0b\u5e8f\u5c06 frame \uff08\u6682\u65e0 CRC \uff09\u62f7\u8d1d\u5230\u7f51\u5361\u82af\u7247\u5185\u90e8\u7684\u7f13\u51b2\u533a\uff0c\u7531\u7f51\u5361\u5904\u7406\u3002<\/p>\n<p>\u7f51\u5361\u82af\u7247\u5c06\u672a\u5b8c\u5168\u5b8c\u6210\u7684 frame \uff08\u7f3a CRC \uff09\u518d\u6b21\u5c01\u88c5\u4e3a\u53ef\u4ee5\u53d1\u9001\u7684 packet\uff0c\u4e5f\u5c31\u662f\u6dfb\u52a0\u5934\u90e8\u540c\u6b65\u4fe1\u606f\u548c CRC \u6821\u9a8c\uff0c\u7136\u540e\u4e22\u5230\u7f51\u7ebf\u4e0a\uff0c\u5c31\u5b8c\u6210\u4e00\u4e2a IP \u62a5\u7684\u53d1\u9001\u4e86\uff0c\u6240\u6709\u63a5\u5230\u7f51\u7ebf\u4e0a\u7684\u7f51\u5361\u90fd\u53ef\u4ee5\u770b\u5230\u8be5 packet \u3002<\/p>\n<h3>\u7f51\u5361\u4e2d\u65ad\u5904\u7406\u51fd\u6570<\/h3>\n<p>\u4ea7\u751f\u4e2d\u65ad\u7684\u6bcf\u4e2a\u8bbe\u5907\u90fd\u6709\u4e00\u4e2a\u76f8\u5e94\u7684\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\uff0c\u662f\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u7684\u4e00\u90e8\u5206\u3002\u6bcf\u4e2a\u7f51\u5361\u90fd\u6709\u4e00\u4e2a\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\uff0c\u7528\u4e8e\u901a\u77e5\u7f51\u5361\u8be5\u4e2d\u65ad\u5df2\u7ecf\u88ab\u63a5\u6536\u4e86\uff0c\u4ee5\u53ca\u628a\u7f51\u5361\u7f13\u51b2\u533a\u7684\u6570\u636e\u5305\u62f7\u8d1d\u5230\u5185\u5b58\u4e2d\u3002<\/p>\n<p>\u5f53\u7f51\u5361\u63a5\u6536\u6765\u81ea\u7f51\u7edc\u7684\u6570\u636e\u5305\u65f6\uff0c\u9700\u8981\u901a\u77e5\u5185\u6838\u6570\u636e\u5305\u5230\u4e86\u3002\u7f51\u5361\u7acb\u5373\u53d1\u51fa\u4e2d\u65ad\u3002\u5185\u6838\u901a\u8fc7\u6267\u884c\u7f51\u5361\u5df2\u6ce8\u518c\u7684\u4e2d\u65ad\u5904\u7406\u51fd\u6570\u6765\u505a\u51fa\u5e94\u7b54\u3002\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u5f00\u59cb\u6267\u884c\uff0c\u901a\u77e5\u786c\u4ef6\uff0c\u62f7\u8d1d\u6700\u65b0\u7684\u7f51\u7edc\u6570\u636e\u5305\u5230\u5185\u5b58\uff0c\u7136\u540e\u8bfb\u53d6\u7f51\u5361\u66f4\u591a\u7684\u6570\u636e\u5305\u3002<\/p>\n<p>\u8fd9\u4e9b\u90fd\u662f\u91cd\u8981\u3001\u7d27\u8feb\u800c\u53c8\u4e0e\u786c\u4ef6\u76f8\u5173\u7684\u5de5\u4f5c\u3002\u5185\u6838\u901a\u5e38\u9700\u8981\u5feb\u901f\u7684\u62f7\u8d1d\u7f51\u7edc\u6570\u636e\u5305\u5230\u7cfb\u7edf\u5185\u5b58\uff0c\u56e0\u4e3a\u7f51\u5361\u4e0a\u63a5\u6536\u7f51\u7edc\u6570\u636e\u5305\u7684\u7f13\u5b58\u5927\u5c0f\u56fa\u5b9a\uff0c\u800c\u4e14\u76f8\u6bd4\u7cfb\u7edf\u5185\u5b58\u4e5f\u8981\u5c0f\u5f97\u591a\u3002\u6240\u4ee5\u4e0a\u8ff0\u62f7\u8d1d\u52a8\u4f5c\u4e00\u65e6\u88ab\u5ef6\u8fdf\uff0c\u5fc5\u7136\u9020\u6210\u7f51\u5361 FIFO \u7f13\u5b58\u6ea2\u51fa &#8211; \u8fdb\u5165\u7684\u6570\u636e\u5305\u5360\u6ee1\u4e86\u7f51\u5361\u7684\u7f13\u5b58\uff0c\u540e\u7eed\u7684\u5305\u53ea\u80fd\u88ab\u4e22\u5f03\uff0c\u8fd9\u4e5f\u5e94\u8be5\u5c31\u662f ifconfig \u91cc\u7684 overrun \u7684\u6765\u6e90\u3002<\/p>\n<p>\u5f53\u7f51\u7edc\u6570\u636e\u5305\u88ab\u62f7\u8d1d\u5230\u7cfb\u7edf\u5185\u5b58\u540e\uff0c\u4e2d\u65ad\u7684\u4efb\u52a1\u7b97\u662f\u5b8c\u6210\u4e86\uff0c\u8fd9\u65f6\u5b83\u628a\u63a7\u5236\u6743\u4ea4\u8fd8\u7ed9\u88ab\u7cfb\u7edf\u4e2d\u65ad\u524d\u8fd0\u884c\u7684\u7a0b\u5e8f\u3002<\/p>\n<h3>\u7f13\u51b2\u533a\u8bbf\u95ee<\/h3>\n<p>\u7f51\u5361\u7684\u5185\u6838\u7f13\u51b2\u533a\uff0c\u662f\u5728 PC \u5185\u5b58\u4e2d\uff0c\u7531\u5185\u6838\u63a7\u5236\uff0c\u800c\u7f51\u5361\u4f1a\u6709 FIFO \u7f13\u51b2\u533a\uff0c\u6216\u8005 ring buffer\uff0c\u8fd9\u5e94\u8be5\u5c06\u4e24\u8005\u533a\u5206\u5f00\u3002FIFO \u6bd4\u8f83\u5c0f\uff0c\u91cc\u9762\u6709\u6570\u636e\u4fbf\u4f1a\u5c3d\u91cf\u5c06\u6570\u636e\u5b58\u5728\u5185\u6838\u7f13\u51b2\u4e2d\u3002<\/p>\n<p>\u7f51\u5361\u4e2d\u7684\u7f13\u51b2\u533a\u65e2\u4e0d\u5c5e\u4e8e\u5185\u6838\u7a7a\u95f4\uff0c\u4e5f\u4e0d\u5c5e\u4e8e\u7528\u6237\u7a7a\u95f4\u3002\u5b83\u5c5e\u4e8e\u786c\u4ef6\u7f13\u51b2\uff0c\u5141\u8bb8\u7f51\u5361\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u4e4b\u95f4\u6709\u4e2a\u7f13\u51b2\uff1b<\/p>\n<p>\u5185\u6838\u7f13\u51b2\u533a\u5728\u5185\u6838\u7a7a\u95f4\uff0c\u5728\u5185\u5b58\u4e2d\uff0c\u7528\u4e8e\u5185\u6838\u7a0b\u5e8f\uff0c\u505a\u4e3a\u8bfb\u81ea\u6216\u5199\u5f80\u786c\u4ef6\u7684\u6570\u636e\u7f13\u51b2\u533a\uff1b<\/p>\n<p>\u7528\u6237\u7f13\u51b2\u533a\u5728\u7528\u6237\u7a7a\u95f4\uff0c\u5728\u5185\u5b58\u4e2d\uff0c\u7528\u4e8e\u7528\u6237\u7a0b\u5e8f\uff0c\u505a\u4e3a\u8bfb\u81ea\u6216\u5199\u5f80\u786c\u4ef6\u7684\u6570\u636e\u7f13\u51b2\u533a\uff1b<\/p>\n<p>\u53e6\u5916\uff0c\u4e3a\u4e86\u52a0\u5feb\u6570\u636e\u7684\u4ea4\u4e92\uff0c\u53ef\u4ee5\u5c06\u5185\u6838\u7f13\u51b2\u533a\u6620\u5c04\u5230\u7528\u6237\u7a7a\u95f4\uff0c\u8fd9\u6837\uff0c\u5185\u6838\u7a0b\u5e8f\u548c\u7528\u6237\u7a0b\u5e8f\u5c31\u53ef\u4ee5\u540c\u65f6\u8bbf\u95ee\u8fd9\u4e00\u533a\u95f4\u4e86\u3002<\/p>\n<p>\u5bf9\u4e8e\u6709 ring buffer \u7684\u7f51\u5361\uff0cring buffer \u662f\u7531\u9a71\u52a8\u4e0e\u7f51\u5361\u5171\u4eab\u7684\uff0c\u6240\u4ee5\u5185\u6838\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee ring buffer\uff0c\u4e00\u822c\u62f7\u8d1d frames \u7684\u526f\u672c\u5230\u81ea\u5df1\u7684\u5185\u6838\u7a7a\u95f4\u8fdb\u884c\u5904\u7406\uff08 deliver \u5230\u4e0a\u5c42\u534f\u8bae\uff0c\u4e4b\u540e\u7684\u4e00\u4e2a\u4e2a skb \u5c31\u662f\u6309 skb \u7684\u6307\u9488\u4f20\u9012\u65b9\u5f0f\u4f20\u9012\uff0c\u76f4\u5230\u7528\u6237\u83b7\u5f97\u6570\u636e\uff0c\u6240\u4ee5\uff0c\u5bf9\u4e8e ring buffer \u7f51\u5361\uff0c\u5927\u91cf\u62f7\u8d1d\u53d1\u751f\u5728 frame \u4ece ring buffer \u4f20\u9012\u5230\u5185\u6838\u63a7\u5236\u7684\u8ba1\u7b97\u673a\u5185\u5b58\u91cc\uff09\u3002<\/p>\n<h2>\u4e22\u5305\u6392\u67e5\u601d\u8def<\/h2>\n<p>\u7f51\u5361\u5de5\u4f5c\u5728\u6570\u636e\u94fe\u8def\u5c42\uff0c\u6570\u636e\u91cf\u94fe\u8def\u5c42\uff0c\u4f1a\u505a\u4e00\u4e9b\u6821\u9a8c\uff0c\u5c01\u88c5\u6210\u5e27\u3002\u6211\u4eec\u53ef\u4ee5\u67e5\u770b\u6821\u9a8c\u662f\u5426\u51fa\u9519\uff0c\u786e\u5b9a\u4f20\u8f93\u662f\u5426\u5b58\u5728\u95ee\u9898\u3002\u7136\u540e\u4ece\u8f6f\u4ef6\u5c42\u9762\uff0c\u662f\u5426\u56e0\u4e3a\u7f13\u51b2\u533a\u592a\u5c0f\u4e22\u5305\u3002<\/p>\n<h3>\u5148\u67e5\u770b\u786c\u4ef6\u60c5\u51b5<\/h3>\n<p>\u4e00\u53f0\u673a\u5668\u7ecf\u5e38\u6536\u5230\u4e22\u5305\u7684\u62a5\u8b66\uff0c\u5148\u770b\u770b\u6700\u5e95\u5c42\u7684\u6709\u6ca1\u6709\u95ee\u9898:<\/p>\n<p>(1) \u67e5\u770b\u5de5\u4f5c\u6a21\u5f0f\u662f\u5426\u6b63\u5e38<\/p>\n<pre><code>[[email&#160;protected] ~]# ethtool eth0 | egrep 'Speed|Duplex' Speed: 1000Mb\/s Duplex: Full <\/code><\/pre>\n<p>(2) \u67e5\u770b\u68c0\u9a8c\u662f\u5426\u6b63\u5e38<\/p>\n<pre><code>[[email&#160;protected] ~]# ethtool -S eth0 | grep crc rx_crc_errors: 0 <\/code><\/pre>\n<p>Speed\uff0cDuplex\uff0cCRC \u4e4b\u7c7b\u7684\u90fd\u6ca1\u95ee\u9898\uff0c\u57fa\u672c\u53ef\u4ee5\u6392\u9664\u7269\u7406\u5c42\u9762\u7684\u5e72\u6270\u3002<\/p>\n<h3>overruns \u548c buffer size<\/h3>\n<pre><code># \u901a\u8fc7 ifconfig \u53ef\u4ee5\u770b\u5230 overruns \u662f\u5426\u4e00\u76f4\u589e\u5927 for i in `seq 1 100`; do ifconfig eth2 | grep RX | grep overruns; sleep 1; done # \u8fd9\u91cc\u4e00\u76f4\u589e\u52a0 RX packets:346547657 errors:0 dropped:0 overruns:35345 frame:0  # \u53ef\u4ee5\u901a\u8fc7 ethtool \u6765\u4fee\u6539\u7f51\u5361\u7684 buffer size\uff0c\u9996\u5148\u8981\u7f51\u5361\u652f\u6301\uff0c\u6211\u7684\u670d\u52a1\u5668\u662f\u662f INTEL \u7684 1000M \u7f51\u5361,\u6211\u4eec\u770b\u770b ethtool \u8bf4\u660e\u00a0 -g \u00a0 \u2013show-ringQueries the specified ethernet device for rx\/tx ring parameter information. -G \u00a0 \u2013set-ringChanges the rx\/tx ring parameters of the specified ethernet device. # \u67e5\u770b\u5f53\u524d\u7f51\u5361\u7684 buffer size \u60c5\u51b5 ethtool -g eth0  [[email&#160;protected] ~]# ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: 4096 RX Mini: 0 RX Jumbo: 0 TX: 4096 Current hardware settings: RX: 256 RX Mini: 0 RX Jumbo: 0 TX: 256  # \u4fee\u6539 buffer size \u5927\u5c0f ethtool -G eth0 rx 2048 ethtool -G eth0 tx 2048  [[email&#160;protected] ~]# ethtool -G eth0 rx 2048 [[email&#160;protected] ~]# ethtool -G eth0 tx 2048 [[email&#160;protected] ~]# ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: 4096 RX Mini: 0 RX Jumbo: 0 TX: 4096 Current hardware settings: RX: 2048 RX Mini: 0 RX Jumbo: 0 TX: 2048 <\/code><\/pre>\n<h3>Red Hat \u5b98\u65b9\u89e3\u51b3\u601d\u8def<\/h3>\n<blockquote>\n<p>Issue<\/p>\n<\/blockquote>\n<p>Why <code>rx_crc_errors<\/code> incrementing in the receive counter of <code>ethtool -S<\/code> output?<\/p>\n<pre><code>$ ethtool -S &lt;Interface_name&gt; | grep -i error      rx_error_bytes: 0      tx_error_bytes: 0      tx_mac_errors: 0      tx_carrier_errors: 0      rx_crc_errors: 9244      rx_align_errors: 0 <\/code><\/pre>\n<blockquote>\n<p>Resolution<\/p>\n<\/blockquote>\n<ol>\n<li>Change the cable.<\/li>\n<li>Check switch configuration.<\/li>\n<li>Change the network interface card.<\/li>\n<\/ol>\n<blockquote>\n<p>Root Cause<\/p>\n<\/blockquote>\n<ol>\n<li>Most of the time incrementing the value of <code>rx_crc_errors<\/code> means the problem is in <code>Layer-1<\/code> of the networking model.<\/li>\n<li>When a packet is received at the interface, it goes through a data integrity check which is called <code>cyclic redundancy check<\/code>. If the packet fails in that check, it is marked as <code>rx_crc_errors<\/code>.<\/li>\n<li>The switch was forcing the <code>NIC<\/code> to operate in <code>half-duplex<\/code> mode. Fixing the switch to tell the <code>NIC<\/code> to operate in <code>full-duplex<\/code> mode have resolved the issue.<\/li>\n<\/ol>\n<blockquote>\n<p>Diagnostic Steps<\/p>\n<\/blockquote>\n<p>Check <code>ethtool -S<\/code> output and find where are the drops and errors.<\/p>\n<pre><code>$ ethtool -S &lt;Interface_name&gt; | grep -i error      rx_error_bytes: 0      tx_error_bytes: 0      tx_mac_errors: 0      tx_carrier_errors: 0      rx_crc_errors: 9244  &gt;&gt;&gt;&gt;&gt;&gt;      rx_align_errors: 0  <\/code><\/pre>\n<p>Check the numbers corresponding to <code>rx_crc_errors<\/code>.<\/p>\n<h2>ethtool \u5e38\u7528\u547d\u4ee4<\/h2>\n<pre><code>ethtool p1p1  Settings for p1p1:  Supported ports: [ FIBRE ]  Supported link modes:   10000baseT\/Full  Supported pause frame use: Symmetric  Supports auto-negotiation: No  Supported FEC modes: Not reported  Advertised link modes:  10000baseT\/Full  Advertised pause frame use: Symmetric  Advertised auto-negotiation: No  Advertised FEC modes: Not reported  Speed: 10000Mb\/s  Duplex: Full  Port: FIBRE  PHYAD: 0  Transceiver: internal  Auto-negotiation: off  Supports Wake-on: d  Wake-on: d  Current message level: 0x00000007 (7)           drv probe link  Link detected: yes  <\/code><\/pre>\n<p>\u663e\u793a\u4e86 p1p1 \u7684\u63a5\u53e3\u7c7b\u578b\uff0c\u8fde\u63a5\u6a21\u5f0f\uff0c\u901f\u7387\u7b49\u7b49\u4fe1\u606f\uff0c\u4ee5\u53ca\u5f53\u524d\u662f\u5426\u8fde\u63a5\u4e86\u7f51\u7ebf\uff08\u5982\u679c\u662f\u7f51\u7ebf Supported ports \u5c31\u662f TP\uff0c\u5982\u679c\u662f\u5149\u7ea4\u5219\u663e\u793a Fiber \uff09\uff0c\u8fd9\u91cc\u4f8b\u4e3e\u4e0b 3 \u4e2a\u91cd\u8981\u5173\u952e\u8bcd<\/p>\n<p>Supported ports: [ FIBRE ] Speed: 10000Mb\/s Link detected: yes<\/p>\n<pre><code># -S \u663e\u793a NIC- and driver-specific \u7684\u7edf\u8ba1\u53c2\u6570\uff0c\u5982\u7f51\u5361\u63a5\u6536 \/\u53d1\u9001\u7684\u5b57\u8282\u6570\u3001\u63a5\u6536 \/\u53d1\u9001\u7684\u5e7f\u64ad\u5305\u4e2a\u6570\u7b49\u3002  ethtool -S p1p1 | grep -i error      rx_errors: 0      tx_errors: 0      rx_over_errors: 0      rx_crc_errors: 0      rx_frame_errors: 0      rx_fifo_errors: 0      rx_missed_errors: 0      tx_aborted_errors: 0      tx_carrier_errors: 0      tx_fifo_errors: 0      tx_heartbeat_errors: 0      rx_length_errors: 0      rx_long_length_errors: 0      rx_short_length_errors: 0      rx_csum_offload_errors: 0   # -p \u7528\u4e8e\u533a\u522b\u4e0d\u540c ethX \u5bf9\u5e94\u7f51\u5361\u7684\u7269\u7406\u4f4d\u7f6e\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7f51\u5361 port \u4e0a\u7684 led \u4e0d\u65ad\u7684\u95ea ethtool -p &lt;Interface_name&gt; ethtool -p eth0  # -i \u663e\u793a\u7f51\u5361\u9a71\u52a8\u7684\u4fe1\u606f\uff0c\u5982\u9a71\u52a8\u7684\u540d\u79f0\u3001\u7248\u672c\u7b49 ethtool -i p1p1  driver: ixgbe version: 5.1.0-k-rh7.6 firmware-version: 0x80000960, 18.3.6 expansion-rom-version: bus-info: 0000:04:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes  # ethtool \u2013s ethX [speed 10|100|1000] [duplex half|full]  [autoneg on|off] # \u8bbe\u7f6e\u7f51\u53e3\u901f\u7387 10\/100\/1000M \u3001\u8bbe\u7f6e\u7f51\u53e3\u534a \/\u5168\u53cc\u5de5\u3001\u8bbe\u7f6e\u7f51\u53e3\u662f\u5426\u81ea\u534f\u5546 ethtool -s eth0 speed 100      <\/code><\/pre>\n<h2>\u53c2\u8003\u6587\u7ae0<\/h2>\n<p>ethtool<\/p>\n<p>Counters Troubleshooting for Linux Driver<\/p>\n<p>Why do I see rx_crc_errors in ethtool output?<\/p>\n<p>ping \u8bf7\u6c42\u9519\u8bef\u5206\u6790<\/p>\n<p>ifconfig \u547d\u4ee4\u8be6\u89e3<\/p>\n<p>ethtool \u547d\u4ee4\u8be6\u89e3<\/p>\n<p>ethtool \u89e3\u51b3\u7f51\u5361\u4e22\u5305\u4e25\u91cd\u548c\u7f51\u5361\u539f\u7406<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>6<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"2189723\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : redeemer <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5199\u7684\u5f88\u597d\uff0c\u6700\u8fd1\u6070\u597d\u5728\u770b e100 \u9a71\u52a8                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2189724\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : wsgzao <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @redeemer #1 \u8c22\u8c22\u56de\u590d\u652f\u6301                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2189725\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zyzrichard <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5199\u7684\u5f88\u8be6\u7ec6\u3002<br \/>\u6211\u6628\u5929\u521a\u521a\u53d1\u73b0 pve \u73af\u5883\u548c\u6211\u7684\u7f51\u5361\u4e0d\u592a\u517c\u5bb9\uff0cinter \u7684\u5343\u5146\u7f51\u5361\u3002<br \/>\u52a8\u4e0d\u52a8\u5c31\u8981\u88ab reset \u5bfc\u81f4\u65ad\u6d41\u3002<br \/>ethtool -K xxx tso off gso off<br \/>\u727a\u7272\u4e86\u4e00\u90e8\u5206\u6027\u80fd\u6362\u4e86\u517c\u5bb9\u6027\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2189726\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : Chenamy2017 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u819c\u62dc\u5927\u4f6c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2189727\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : hasdream <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5199\u7684\u5f88\u597d\uff0c\u819c\u62dc                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2189728\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : defunct9 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6df1\u5ea6\u597d\u6587                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>ethtool \u539f\u7406\u4ecb\u7ecd\u548c\u89e3\u51b3\u7f51\u5361&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\/126538"}],"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=126538"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/126538\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=126538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=126538"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=126538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}