{"id":32038,"date":"2025-01-15T16:59:08","date_gmt":"2025-01-15T08:59:08","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=24597"},"modified":"2025-01-15T16:59:08","modified_gmt":"2025-01-15T08:59:08","slug":"ebpf%e5%a6%82%e4%bd%95%e5%b8%ae%e5%8a%a9%e6%8f%90%e5%8d%87%e5%88%86%e5%b8%83%e5%bc%8f%e5%ad%98%e5%82%a8%e7%b3%bb%e7%bb%9f%e7%9a%84%e6%80%a7%e8%83%bd%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/32038.html","title":{"rendered":"eBPF\u5982\u4f55\u5e2e\u52a9\u63d0\u5347\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u7684\u6027\u80fd\uff1f"},"content":{"rendered":"

\t\t\t\t\n\n

\"eBPF\u5982\u4f55\u5e2e\u52a9\u63d0\u5347\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u7684\u6027\u80fd\uff1f\"<\/p>\n\n<\/p>\n\n\n\n

\u5728\u5f53\u4eca\u6570\u636e\u9a71\u52a8\u7684\u65f6\u4ee3\uff0c\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u5df2\u6210\u4e3a\u4f01\u4e1aIT\u57fa\u7840\u8bbe\u65bd\u7684\u6838\u5fc3\u7ec4\u6210\u90e8\u5206\u3002\u7136\u800c\uff0c\u968f\u7740\u6570\u636e\u91cf\u7684\u7206\u70b8\u5f0f\u589e\u957f\u548c\u4e1a\u52a1\u9700\u6c42\u7684\u65e5\u76ca\u590d\u6742\uff0c\u5982\u4f55\u63d0\u5347\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u7684\u6027\u80fd\u6210\u4e3a\u4e86\u4e00\u4e2a\u4e9f\u5f85\u89e3\u51b3\u7684\u6311\u6218\u3002eBPF\uff08Extended Berkeley Packet Filter\uff09\u4f5c\u4e3a\u4e00\u79cd\u9769\u547d\u6027\u7684\u5185\u6838\u6280\u672f\uff0c\u6b63\u5728\u4e3a\u8fd9\u4e00\u96be\u9898\u63d0\u4f9b\u5168\u65b0\u7684\u89e3\u51b3\u65b9\u6848\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8eBPF\u5982\u4f55\u901a\u8fc7\u5176\u72ec\u7279\u7684\u80fd\u529b\uff0c\u5e2e\u52a9\u63d0\u5347\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u7684\u6027\u80fd\uff0c\u4e3a\u8bfb\u8005\u63ed\u793a\u8fd9\u4e00\u6280\u672f\u5728\u73b0\u4ee3\u5b58\u50a8\u67b6\u6784\u4e2d\u7684\u5173\u952e\u4f5c\u7528\u3002<\/p>\n\n\n\n\n

eBPF\uff1a\u5206\u5e03\u5f0f\u5b58\u50a8\u6027\u80fd\u4f18\u5316\u7684\u65b0\u5229\u5668<\/h3>\n\n\n\n\n

eBPF\u6700\u521d\u662f\u4e3a\u7f51\u7edc\u6570\u636e\u5305\u8fc7\u6ee4\u800c\u8bbe\u8ba1\u7684\uff0c\u4f46\u5b83\u7684\u5e94\u7528\u8303\u56f4\u65e9\u5df2\u8d85\u8d8a\u4e86\u6700\u521d\u7684\u8bbe\u60f3\u3002\u4f5c\u4e3a\u4e00\u79cd\u5b89\u5168\u3001\u9ad8\u6548\u7684\u5185\u6838\u6269\u5c55\u6280\u672f\uff0ceBPF\u5141\u8bb8\u7528\u6237\u5728\u4e0d\u4fee\u6539\u5185\u6838\u6e90\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u52a8\u6001\u52a0\u8f7d\u548c\u8fd0\u884c\u81ea\u5b9a\u4e49\u7a0b\u5e8f<\/strong>\u3002\u8fd9\u79cd\u7279\u6027\u4f7f\u5f97eBPF\u6210\u4e3a\u4f18\u5316\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u6027\u80fd\u7684\u7406\u60f3\u5de5\u5177\u3002<\/p>\n\n\n\n\n

\u5728\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u4e2d\uff0c\u6027\u80fd\u74f6\u9888\u5f80\u5f80\u51fa\u73b0\u5728\u591a\u4e2a\u5c42\u9762\uff0c\u5305\u62ec\u7f51\u7edc\u901a\u4fe1\u3001I\/O\u64cd\u4f5c\u3001\u6570\u636e\u4e00\u81f4\u6027\u7ef4\u62a4\u7b49\u3002eBPF\u901a\u8fc7\u5176\u5f3a\u5927\u7684\u53ef\u89c2\u6d4b\u6027\u548c\u53ef\u7f16\u7a0b\u6027\uff0c\u80fd\u591f\u6df1\u5165\u5230\u8fd9\u4e9b\u5173\u952e\u73af\u8282\uff0c\u63d0\u4f9b\u5b9e\u65f6\u7684\u6027\u80fd\u5206\u6790\u548c\u4f18\u5316\u80fd\u529b<\/strong>\u3002\u4f8b\u5982\uff0c\u901a\u8fc7eBPF\uff0c\u6211\u4eec\u53ef\u4ee5\u7cbe\u786e\u8ffd\u8e2a\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u4e2d\u7684\u6bcf\u4e2aI\/O\u8bf7\u6c42\uff0c\u5206\u6790\u5176\u8def\u5f84\u548c\u8017\u65f6\uff0c\u4ece\u800c\u5feb\u901f\u5b9a\u4f4d\u6027\u80fd\u74f6\u9888\u3002<\/p>\n\n\n\n\n

\u5b9e\u65f6\u76d1\u63a7\u4e0e\u6027\u80fd\u5206\u6790<\/h3>\n\n\n\n\n

eBPF\u6700\u663e\u8457\u7684\u4f18\u52bf\u4e4b\u4e00\u662f\u5176\u80fd\u591f\u63d0\u4f9b\u5b9e\u65f6\u7684\u7cfb\u7edf\u76d1\u63a7\u80fd\u529b<\/strong>\u3002\u5728\u4f20\u7edf\u7684\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u4e2d\uff0c\u6027\u80fd\u76d1\u63a7\u5f80\u5f80\u4f9d\u8d56\u4e8e\u5468\u671f\u6027\u7684\u91c7\u6837\u6216\u65e5\u5fd7\u5206\u6790\uff0c\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u5b58\u5728\u5ef6\u8fdf\uff0c\u8fd8\u53ef\u80fd\u9519\u8fc7\u5173\u952e\u7684\u6027\u80fd\u4e8b\u4ef6\u3002\u800ceBPF\u53ef\u4ee5\u76f4\u63a5\u5728\u5185\u6838\u5c42\u9762\u6355\u83b7\u7cfb\u7edf\u8c03\u7528\u3001\u7f51\u7edc\u6570\u636e\u5305\u3001\u6587\u4ef6\u64cd\u4f5c\u7b49\u4e8b\u4ef6\uff0c\u5b9e\u73b0\u771f\u6b63\u7684\u5b9e\u65f6\u76d1\u63a7\u3002<\/p>\n\n\n\n\n

\u4f8b\u5982\uff0c\u5728Ceph\u8fd9\u6837\u7684\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u4e2d\uff0ceBPF\u53ef\u4ee5\u7528\u6765\u76d1\u63a7\u6bcf\u4e2aOSD\uff08Object Storage Daemon\uff09\u7684I\/O\u64cd\u4f5c\u3002\u901a\u8fc7eBPF\u7a0b\u5e8f\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u65f6\u6536\u96c6\u6bcf\u4e2aI\/O\u8bf7\u6c42\u7684\u5ef6\u8fdf\u3001\u5927\u5c0f\u3001\u76ee\u6807\u8bbe\u5907\u7b49\u4fe1\u606f\uff0c\u5e76\u751f\u6210\u8be6\u7ec6\u7684\u6027\u80fd\u5206\u6790\u62a5\u544a<\/strong>\u3002\u8fd9\u79cd\u7ec6\u7c92\u5ea6\u7684\u76d1\u63a7\u80fd\u529b\u4f7f\u5f97\u7cfb\u7edf\u7ba1\u7406\u5458\u80fd\u591f\u5feb\u901f\u53d1\u73b0\u6027\u80fd\u5f02\u5e38\uff0c\u5982\u67d0\u4e2aOSD\u7684\u54cd\u5e94\u65f6\u95f4\u7a81\u7136\u589e\u52a0\uff0c\u4ece\u800c\u53ca\u65f6\u91c7\u53d6\u63aa\u65bd\u3002<\/p>\n\n\n\n\n

\u7f51\u7edc\u6027\u80fd\u4f18\u5316<\/h3>\n\n\n\n\n

\u5728\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u4e2d\uff0c\u7f51\u7edc\u901a\u4fe1\u662f\u5f71\u54cd\u6574\u4f53\u6027\u80fd\u7684\u5173\u952e\u56e0\u7d20\u4e4b\u4e00\u3002eBPF\u5728\u7f51\u7edc\u5c42\u9762\u7684\u5e94\u7528\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u7684\u7f51\u7edc\u6027\u80fd<\/strong>\u3002\u901a\u8fc7eBPF\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u6548\u7684\u7f51\u7edc\u6570\u636e\u5305\u8fc7\u6ee4\u3001\u8d1f\u8f7d\u5747\u8861\u548c\u6d41\u91cf\u63a7\u5236\u3002<\/p>\n\n\n\n\n

\u4f8b\u5982\uff0c\u5728GlusterFS\u8fd9\u6837\u7684\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf\u4e2d\uff0ceBPF\u53ef\u4ee5\u7528\u6765\u4f18\u5316\u5ba2\u6237\u7aef\u4e0e\u5b58\u50a8\u8282\u70b9\u4e4b\u95f4\u7684\u7f51\u7edc\u901a\u4fe1\u3002\u901a\u8fc7eBPF\u7a0b\u5e8f\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u667a\u80fd\u7684\u6d41\u91cf\u8c03\u5ea6\uff0c\u5c06I\/O\u8bf7\u6c42\u52a8\u6001\u5206\u914d\u5230\u6700\u5408\u9002\u7684\u5b58\u50a8\u8282\u70b9\uff0c\u4ece\u800c\u51cf\u5c11\u7f51\u7edc\u5ef6\u8fdf\u548c\u63d0\u9ad8\u541e\u5410\u91cf<\/strong>\u3002\u6b64\u5916\uff0ceBPF\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u9ad8\u6548\u7684\u7f51\u7edc\u6545\u969c\u68c0\u6d4b\u548c\u81ea\u52a8\u6062\u590d\u673a\u5236\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347\u7cfb\u7edf\u7684\u53ef\u9760\u6027\u3002<\/p>\n\n\n\n\n

I\/O\u8def\u5f84\u4f18\u5316<\/h3>\n\n\n\n\n

I\/O\u6027\u80fd\u662f\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u7684\u53e6\u4e00\u4e2a\u5173\u952e\u6307\u6807\u3002eBPF\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316I\/O\u8def\u5f84\u6765\u663e\u8457\u63d0\u5347\u7cfb\u7edf\u7684I\/O\u6027\u80fd<\/strong>\u3002\u4f20\u7edf\u7684I\/O\u8def\u5f84\u5f80\u5f80\u6d89\u53ca\u591a\u4e2a\u5185\u6838\u5b50\u7cfb\u7edf\uff0c\u5982VFS\u3001\u5757\u8bbe\u5907\u5c42\u7b49\uff0c\u8fd9\u4e9b\u5c42\u7ea7\u53ef\u80fd\u4f1a\u5f15\u5165\u989d\u5916\u7684\u5f00\u9500\u3002eBPF\u5141\u8bb8\u6211\u4eec\u5728\u8fd9\u4e9b\u5173\u952e\u8def\u5f84\u4e0a\u63d2\u5165\u81ea\u5b9a\u4e49\u7684\u5904\u7406\u903b\u8f91\uff0c\u4ece\u800c\u4f18\u5316I\/O\u64cd\u4f5c\u3002<\/p>\n\n\n\n\n

\u4f8b\u5982\uff0c\u5728\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u4e2d\uff0ceBPF\u53ef\u4ee5\u7528\u6765\u5b9e\u73b0\u9ad8\u6548\u7684\u7f13\u5b58\u7ba1\u7406\u3002\u901a\u8fc7eBPF\u7a0b\u5e8f\uff0c\u6211\u4eec\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u7f13\u5b58\u7b56\u7565\uff0c\u6839\u636e\u5de5\u4f5c\u8d1f\u8f7d\u7279\u5f81\u4f18\u5316\u7f13\u5b58\u547d\u4e2d\u7387<\/strong>\u3002\u6b64\u5916\uff0ceBPF\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u7ec6\u7c92\u5ea6\u7684I\/O\u8c03\u5ea6\uff0c\u4f18\u5148\u5904\u7406\u5173\u952eI\/O\u8bf7\u6c42\uff0c\u4ece\u800c\u51cf\u5c11\u6574\u4f53I\/O\u5ef6\u8fdf\u3002<\/p>\n\n\n\n\n

\u5b89\u5168\u4e0e\u6027\u80fd\u7684\u5e73\u8861<\/h3>\n\n\n\n\n

\u5728\u63d0\u5347\u6027\u80fd\u7684\u540c\u65f6\uff0c\u5b89\u5168\u6027\u4e5f\u662f\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u5fc5\u987b\u8003\u8651\u7684\u91cd\u8981\u56e0\u7d20\u3002eBPF\u901a\u8fc7\u5176\u5b89\u5168\u6c99\u7bb1\u673a\u5236\uff0c\u53ef\u4ee5\u5728\u4e0d\u727a\u7272\u6027\u80fd\u7684\u524d\u63d0\u4e0b\uff0c\u63d0\u4f9b\u5f3a\u5927\u7684\u5b89\u5168\u9632\u62a4\u80fd\u529b<\/strong>\u3002\u4f8b\u5982\uff0ceBPF\u53ef\u4ee5\u7528\u6765\u5b9e\u73b0\u5b9e\u65f6\u7684\u8bbf\u95ee\u63a7\u5236\uff0c\u9632\u6b62\u672a\u7ecf\u6388\u6743\u7684I\/O\u64cd\u4f5c\u3002\u540c\u65f6\uff0ceBPF\u8fd8\u53ef\u4ee5\u7528\u4e8e\u68c0\u6d4b\u548c\u9632\u5fa1\u5404\u79cd\u5b89\u5168\u5a01\u80c1\uff0c\u5982DDoS\u653b\u51fb\u3001\u6570\u636e\u7be1\u6539\u7b49\u3002<\/p>\n\n\n\n\n

\u5b9e\u9645\u5e94\u7528\u6848\u4f8b<\/h3>\n\n\n\n\n

\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5df2\u7ecf\u6709\u8bb8\u591a\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u5f00\u59cb\u91c7\u7528eBPF\u6765\u63d0\u5347\u6027\u80fd\u3002\u4f8b\u5982\uff0cNetflix\u4f7f\u7528eBPF\u6765\u4f18\u5316\u5176\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u7684\u7f51\u7edc\u6027\u80fd\uff0c\u5b9e\u73b0\u4e86\u663e\u8457\u7684\u5ef6\u8fdf\u964d\u4f4e\u548c\u541e\u5410\u91cf\u63d0\u5347<\/strong>\u3002\u53e6\u4e00\u4e2a\u4f8b\u5b50\u662fFacebook\uff0c\u4ed6\u4eec\u5229\u7528eBPF\u6765\u4f18\u5316\u5176\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7cfb\u7edf\u7684I\/O\u6027\u80fd\uff0c\u5927\u5927\u51cf\u5c11\u4e86\u67e5\u8be2\u5ef6\u8fdf\u3002<\/p>\n\n\n\n\n

\u8fd9\u4e9b\u6210\u529f\u6848\u4f8b\u5145\u5206\u8bc1\u660e\u4e86eBPF\u5728\u63d0\u5347\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u6027\u80fd\u65b9\u9762\u7684\u5de8\u5927\u6f5c\u529b\u3002\u968f\u7740eBPF\u6280\u672f\u7684\u4e0d\u65ad\u6210\u719f\u548c\u666e\u53ca\uff0c\u6211\u4eec\u6709\u7406\u7531\u76f8\u4fe1\uff0c\u5b83\u5c06\u6210\u4e3a\u672a\u6765\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u6027\u80fd\u4f18\u5316\u7684\u6807\u914d\u5de5\u5177<\/strong>\u3002<\/p>\n\n\n\n\n

\u672a\u6765\u5c55\u671b<\/h3>\n\n\n\n\n

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    \n\n\n
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