{"id":33223,"date":"2025-03-04T11:46:08","date_gmt":"2025-03-04T03:46:08","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=33223"},"modified":"2025-03-04T11:46:08","modified_gmt":"2025-03-04T03:46:08","slug":"ebpf%e6%8a%80%e6%9c%af%e5%a6%82%e4%bd%95%e5%8a%a9%e5%8a%9b%e5%ae%9e%e6%97%b6%e6%95%b0%e6%8d%ae%e6%b5%81%e5%a4%84%e7%90%86%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/33223.html","title":{"rendered":"eBPF\u6280\u672f\u5982\u4f55\u52a9\u529b\u5b9e\u65f6\u6570\u636e\u6d41\u5904\u7406\uff1f"},"content":{"rendered":"

\n

\"eBPF\u6280\u672f\u5982\u4f55\u52a9\u529b\u5b9e\u65f6\u6570\u636e\u6d41\u5904\u7406\uff1f\"<\/p>\n<\/p>\n

\n

\u5728\u6570\u5b57\u5316\u6d6a\u6f6e\u5e2d\u5377\u5168\u7403\u7684\u4eca\u5929\uff0c\u6bcf\u79d2\u4ea7\u751f\u7684\u6570\u636e\u91cf\u5df2\u7a81\u7834ZB\u7ea7\u522b\uff0c\u4ece\u91d1\u878d\u4ea4\u6613\u5230\u5de5\u4e1a\u7269\u8054\u7f51\uff0c\u4ece\u5728\u7ebf\u670d\u52a1\u5230\u81ea\u52a8\u9a7e\u9a76\uff0c\u5b9e\u65f6\u6570\u636e\u6d41\u5904\u7406<\/strong>\u80fd\u529b\u6b63\u6210\u4e3a\u4f01\u4e1a\u7ade\u4e89\u529b\u7684\u5206\u6c34\u5cad\u3002\u7136\u800c\uff0c\u4f20\u7edf\u7684\u6570\u636e\u91c7\u96c6\u4e0e\u5206\u6790\u65b9\u6848\u5e38\u9677\u5165\u4e24\u96be\u56f0\u5883\uff1a\u82e5\u9009\u62e9\u5728\u5185\u6838\u5c42\u5904\u7406\u6570\u636e\uff0c\u6027\u80fd\u867d\u9ad8\u4f46\u5f00\u53d1\u590d\u6742\u5ea6\u9661\u589e\uff1b\u82e5\u4f9d\u8d56\u7528\u6237\u6001\u5de5\u5177\uff0c\u5219\u9762\u4e34\u4e0a\u4e0b\u6587\u5207\u6362\u5e26\u6765\u7684\u5ef6\u8fdf\u4e0e\u8d44\u6e90\u635f\u8017\u3002\u8fd9\u79cd\u77db\u76fe\u50ac\u751f\u4e86\u4e00\u9879\u9769\u547d\u6027\u6280\u672f\u2014\u2014eBPF<\/a>\uff08Extended Berkeley Packet Filter\uff09<\/strong>\u7684\u5d1b\u8d77\u3002\u5b83\u4e0d\u4ec5\u91cd\u65b0\u5b9a\u4e49\u4e86\u6570\u636e\u5904\u7406\u7684\u8fb9\u754c\uff0c\u66f4\u4ee5\u201c\u5185\u6838\u53ef\u7f16\u7a0b\u6027\u201d<\/strong>\u4e3a\u652f\u70b9\uff0c\u64ac\u52a8\u4e86\u5b9e\u65f6\u6570\u636e\u6d41\u5904\u7406\u6548\u7387\u7684\u6307\u6570\u7ea7\u63d0\u5347\u3002<\/p>\n

\n

\u4e00\u3001eBPF<\/a>\uff1a\u7a7f\u900f\u5185\u6838\u4e0e\u7528\u6237\u6001\u7684\u201c\u6570\u636e\u63a2\u9488\u201d<\/h3>\n

eBPF\u6700\u521d\u88ab\u8bbe\u8ba1\u4e3a\u7f51\u7edc\u5305\u8fc7\u6ee4\u5de5\u5177\uff0c\u4f46\u5176\u771f\u6b63\u7684\u98a0\u8986\u6027\u5728\u4e8e\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u4e0d\u4fee\u6539\u5185\u6838\u6e90\u7801\u3001\u4e0d\u91cd\u542f\u7cfb\u7edf\u7684\u60c5\u51b5\u4e0b\uff0c\u52a8\u6001\u6ce8\u5165\u5b89\u5168\u53ef\u63a7\u7684\u4ee3\u7801<\/strong>\u3002\u901a\u8fc7\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u865a\u62df\u673a\uff0ceBPF\u7a0b\u5e8f\u80fd\u591f\u5728Linux\u5185\u6838\u4e2d\u76f4\u63a5\u8fd0\u884c\uff0c\u5b9e\u65f6\u6355\u83b7\u7f51\u7edc\u6d41\u91cf\u3001\u7cfb\u7edf\u8c03\u7528\u3001\u51fd\u6570\u6267\u884c\u7b49\u4e8b\u4ef6\u3002\u8fd9\u79cd\u80fd\u529b\u4f7f\u5176\u5929\u7136\u9002\u914d\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u541e\u5410<\/strong>\u7684\u6570\u636e\u6d41\u573a\u666f\u3002<\/p>\n

\u4e0e\u4f20\u7edf\u65b9\u6848\u76f8\u6bd4\uff0ceBPF\u5b9e\u73b0\u4e86\u4e09\u4e2a\u5173\u952e\u7a81\u7834\uff1a<\/p>\n

    \n
  1. \u96f6\u62f7\u8d1d\u6570\u636e\u7ba1\u9053<\/strong>\uff1a\u7ed5\u8fc7\u5185\u6838\u4e0e\u7528\u6237\u6001\u4e4b\u95f4\u7684\u5185\u5b58\u590d\u5236\uff0c\u76f4\u63a5\u5728\u5185\u6838\u6001\u5b8c\u6210\u6570\u636e\u8fc7\u6ee4\u4e0e\u805a\u5408\uff1b\n<\/li>\n
  2. \u4e8b\u4ef6\u9a71\u52a8\u67b6\u6784<\/strong>\uff1a\u901a\u8fc7Hook\u70b9\uff08\u5982XDP\u3001kprobe\u3001tracepoint\uff09\u89e6\u53d1\u6267\u884c\uff0c\u4ec5\u5728\u6570\u636e\u5230\u8fbe\u65f6\u6d88\u8017CPU\u8d44\u6e90\uff1b\n<\/li>\n
  3. \u5b89\u5168\u6c99\u7bb1\u673a\u5236<\/strong>\uff1a\u6240\u6709\u7a0b\u5e8f\u5fc5\u987b\u901a\u8fc7\u9a8c\u8bc1\u5668\u68c0\u67e5\uff0c\u786e\u4fdd\u4e0d\u4f1a\u5bfc\u81f4\u5185\u6838\u5d29\u6e83\u6216\u8d44\u6e90\u6cc4\u6f0f\u3002\n<\/li>\n<\/ol>\n

    \u8fd9\u79cd\u6280\u672f\u7279\u6027\u4f7f\u5f97eBPF\u6210\u4e3a\u5b9e\u65f6\u6570\u636e\u5904\u7406\u9886\u57df\u7684\u201c\u745e\u58eb\u519b\u5200\u201d\u2014\u2014\u65e0\u8bba\u662f\u5fae\u79d2\u7ea7\u7684\u7f51\u7edc\u4e22\u5305\u5206\u6790\uff0c\u8fd8\u662fTB\u7ea7\u522b\u7684\u65e5\u5fd7\u6d41\u76d1\u63a7\uff0c\u90fd\u80fd\u4ee5\u8fd1\u4e4e\u96f6\u5f00\u9500\u7684\u65b9\u5f0f\u5b9e\u73b0\u3002<\/p>\n

    \n

    \u4e8c\u3001\u7834\u89e3\u5b9e\u65f6\u6570\u636e\u5904\u7406\u7684\u56db\u5927\u6838\u5fc3\u6311\u6218<\/h3>\n

    1. \u5ef6\u8fdf\u4e0e\u541e\u5410\u91cf\u7684\u5e73\u8861\u96be\u9898<\/strong><\/h4>\n

    \u4f20\u7edf\u65b9\u6848\u5982DPDK\u867d\u80fd\u901a\u8fc7\u5185\u6838\u65c1\u8def\u5b9e\u73b0\u9ad8\u6027\u80fd\uff0c\u4f46\u9700\u8981\u72ec\u5360CPU\u6838\u5fc3\uff0c\u4e14\u96be\u4ee5\u4e0e\u4e0a\u5c42\u4e1a\u52a1\u903b\u8f91\u7075\u6d3b\u4ea4\u4e92\u3002eBPF\u7684XDP\uff08eXpress Data Path\uff09\u6280\u672f\u5219\u5141\u8bb8\u5728\u7f51\u7edc\u9a71\u52a8\u5c42\u76f4\u63a5\u5904\u7406\u6570\u636e\u5305\uff0c\u5c06\u5904\u7406\u5ef6\u8fdf\u964d\u4f4e\u5230\u7eb3\u79d2\u7ea7<\/strong>\u3002\u4f8b\u5982\uff0cCloudflare\u4f7f\u7528XDP\u5b9e\u73b0DDoS\u9632\u5fa1\uff0c\u5355\u8282\u70b9\u53ef\u5904\u7406\u767e\u4e07\u7ea7QPS\uff0c\u800cCPU\u5360\u7528\u7387\u4e0d\u8db35%\u3002<\/p>\n

    2. \u591a\u7ef4\u5ea6\u6570\u636e\u5173\u8054\u7684\u590d\u6742\u6027<\/strong><\/h4>\n

    \u5728Kubernetes\u7b49\u52a8\u6001\u73af\u5883\u4e2d\uff0c\u5bb9\u5668IP\u9891\u7e41\u53d8\u5316\uff0c\u4f20\u7edf\u76d1\u63a7\u5de5\u5177\u96be\u4ee5\u5173\u8054\u7f51\u7edc\u6d41\u91cf\u4e0e\u4e1a\u52a1\u903b\u8f91\u3002eBPF\u901a\u8fc7\u81ea\u52a8\u6ce8\u5165\u5143\u6570\u636e<\/strong>\uff08\u5982Pod\u540d\u79f0\u3001Namespace\uff09\uff0c\u4f7f\u5f97\u6570\u636e\u6d41\u5728\u4ea7\u751f\u65f6\u5373\u643a\u5e26\u4e0a\u4e0b\u6587\u4fe1\u606f\u3002Cilium\u9879\u76ee\u6b63\u662f\u57fa\u4e8e\u6b64\u5b9e\u73b0\u4e86\u670d\u52a1\u7f51\u683c\u7684\u900f\u660e\u53ef\u89c2\u6d4b\u6027\u3002<\/p>\n

    3. \u8d44\u6e90\u6d88\u8017\u4e0e\u6210\u672c\u7684\u535a\u5f08<\/strong><\/h4>\n

    \u7528\u6237\u6001\u4ee3\u7406\u65b9\u6848\uff08\u5982Fluentd\uff09\u5728\u5904\u7406\u65e5\u5fd7\u6d41\u65f6\uff0c\u5e38\u56e0\u5e8f\u5217\u5316\/\u53cd\u5e8f\u5217\u5316\u64cd\u4f5c\u6d88\u8017\u5927\u91cfCPU\u3002eBPF\u7a0b\u5e8f\u5219\u80fd\u76f4\u63a5\u63d0\u53d6\u5185\u6838\u6570\u636e\u7ed3\u6784\u4e2d\u7684\u5173\u952e\u5b57\u6bb5\u3002\u4f8b\u5982\uff0cFacebook\u7684katran<\/code>\u8d1f\u8f7d\u5747\u8861\u5668\u901a\u8fc7eBPF\u8fc7\u6ee4\u65e0\u6548\u8bf7\u6c42\uff0c\u51cf\u5c1180%\u7684\u5197\u4f59\u6570\u636e\u5904\u7406<\/strong>\u3002<\/p>\n

    4. \u5b89\u5168\u4e0e\u6027\u80fd\u7684\u53d6\u820d\u56f0\u5c40<\/strong><\/h4>\n

    \u57fa\u4e8eeBPF\u7684\u5b9e\u65f6\u5a01\u80c1\u68c0\u6d4b\u7cfb\u7edf\uff08\u5982Falco\uff09\uff0c\u53ef\u76f4\u63a5\u5728\u5185\u6838\u5c42\u5206\u6790\u7cfb\u7edf\u8c03\u7528\u5e8f\u5217\uff0c\u76f8\u6bd4\u7528\u6237\u6001HIDS\uff08\u4e3b\u673a\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff09\uff0c\u68c0\u6d4b\u5ef6\u8fdf\u964d\u4f4e90%<\/strong>\uff0c\u4e14\u907f\u514d\u4e86\u653b\u51fb\u8005\u7be1\u6539\u7528\u6237\u6001\u8fdb\u7a0b\u7684\u98ce\u9669\u3002<\/p>\n

    \n

    \u4e09\u3001\u4ece\u7406\u8bba\u5230\u5b9e\u8df5\uff1aeBPF\u9a71\u52a8\u7684\u6570\u636e\u6d41\u5904\u7406\u8303\u5f0f<\/h3>\n

    \u573a\u666f1\uff1a\u7f51\u7edc\u6d41\u91cf\u5b9e\u65f6\u5206\u6790<\/strong><\/h4>\n

    \u57285G\u8fb9\u7f18\u8ba1\u7b97\u573a\u666f\u4e2d\uff0ceBPF\u53ef\u5c06\u6d41\u91cf\u5206\u7c7b\u3001QoS\u6807\u8bb0\u3001\u7edf\u8ba1\u8ba1\u6570\u7b49\u64cd\u4f5c\u524d\u79fb\u81f3\u7f51\u5361\u9a71\u52a8\u5c42\u3002\u67d0\u7535\u4fe1\u8fd0\u8425\u5546\u91c7\u7528XDP+AF_XDP\u67b6\u6784\uff0c\u6210\u529f\u5b9e\u73b0\u5355\u670d\u52a1\u566840Gbps\u7ebf\u901f\u6d41\u91cf\u5206\u6790<\/strong>\uff0c\u540c\u65f6\u751f\u6210NetFlow\u65e5\u5fd7\u4f9b\u4e0a\u5c42\u7cfb\u7edf\u4f7f\u7528\u3002<\/p>\n

    \u573a\u666f2\uff1a\u5b89\u5168\u5a01\u80c1\u5373\u65f6\u54cd\u5e94<\/strong><\/h4>\n

    eBPF\u7684\u52a8\u6001\u63a2\u9488\u80fd\u529b\uff0c\u4f7f\u5f97\u5b89\u5168\u56e2\u961f\u80fd\u591f\u5728\u4e0d\u4e2d\u65ad\u4e1a\u52a1\u7684\u60c5\u51b5\u4e0b\uff0c\u5b9e\u65f6\u6355\u83b7\u8fdb\u7a0b\u884c\u4e3a\u3001\u6587\u4ef6\u8bbf\u95ee\u3001\u7f51\u7edc\u8fde\u63a5\u7b49\u4e8b\u4ef6\u3002\u4f8b\u5982\uff0cTracee\u5de5\u5177\u901a\u8fc7\u7ec4\u5408\u591a\u4e2aeBPF\u7a0b\u5e8f\uff0c\u5b9e\u73b0\u4e86\u5bb9\u5668\u73af\u5883\u4e0b\u7684\u65e0\u4fb5\u5165\u5f0f\u5f02\u5e38\u68c0\u6d4b<\/strong>\uff0c\u8bc6\u522b\u5230\u53ef\u7591\u6d3b\u52a8\u540e\u53ef\u5728100ms\u5185\u89e6\u53d1\u544a\u8b66\u3002<\/p>\n

    \u573a\u666f3\uff1a\u7cfb\u7edf\u6027\u80fd\u74f6\u9888\u5b9a\u4f4d<\/strong><\/h4>\n

    \u4f20\u7edf\u7684profiling\u5de5\u5177\uff08\u5982perf\uff09\u91c7\u6837\u9891\u7387\u6709\u9650\uff0c\u4e14\u96be\u4ee5\u6355\u83b7\u77ed\u65f6\u7a81\u53d1\u7684\u6027\u80fd\u95ee\u9898\u3002\u57fa\u4e8eeBPF\u7684BCC\u5de5\u5177\u96c6\uff0c\u53ef\u4ee5\u5b9e\u65f6\u7edf\u8ba1\u51fd\u6570\u8c03\u7528\u8017\u65f6\u3001\u5185\u5b58\u5206\u914d\u6a21\u5f0f\u3001\u8c03\u5ea6\u5ef6\u8fdf\u7b49\u6307\u6807\u3002\u67d0\u7535\u5546\u5e73\u53f0\u4f7f\u7528BCC\u7684offcputime<\/code>\u5de5\u5177\uff0c\u57283\u5206\u949f\u5185\u5b9a\u4f4d\u5230\u5bfc\u81f4\u63a5\u53e3\u5ef6\u8fdf\u7684\u9501\u7ade\u4e89\u95ee\u9898<\/strong>\uff0c\u800c\u4f20\u7edf\u65b9\u6cd5\u9700\u8981\u6570\u5c0f\u65f6\u3002<\/p>\n

    \n

    \u56db\u3001\u672a\u6765\u6f14\u8fdb\uff1aeBPF\u4e0e\u5b9e\u65f6\u6570\u636e\u751f\u6001\u7684\u6df1\u5ea6\u878d\u5408<\/h3>\n

    \u968f\u7740eBPF\u5728Linux 6.0+\u5185\u6838\u4e2d\u652f\u6301\u5faa\u73af\u548c\u5168\u5c40\u53d8\u91cf\uff0c\u5176\u6570\u636e\u5904\u7406\u80fd\u529b\u6b63\u5728\u5411\u66f4\u590d\u6742\u7684\u573a\u666f\u5ef6\u4f38\uff1a<\/p>\n

      \n
    • \u670d\u52a1\u7f51\u683c\u7684\u8f7b\u91cf\u5316<\/strong>\uff1a\u901a\u8fc7eBPF\u66ff\u4ee3Sidecar\u4ee3\u7406\uff0cIstio Ambient Mesh\u5df2\u5b9e\u73b0\u6d41\u91cf\u52ab\u6301\u4e0e\u63a7\u5236\u9762\u901a\u4fe1\u7684\u6548\u7387\u63d0\u534710\u500d<\/strong>\uff1b\n<\/li>\n
    • AI\u8bad\u7ec3\u52a0\u901f<\/strong>\uff1aNVIDIA\u7684eBP<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

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