{"id":24297,"date":"2025-01-15T14:01:15","date_gmt":"2025-01-15T06:01:15","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=24297"},"modified":"2025-01-15T14:01:15","modified_gmt":"2025-01-15T06:01:15","slug":"ebpf%e5%a6%82%e4%bd%95%e5%b8%ae%e5%8a%a9%e5%ae%9e%e7%8e%b0%e9%ab%98%e6%95%88%e7%9a%84%e8%83%bd%e6%ba%90%e6%b6%88%e8%80%97%e7%9b%91%e6%8e%a7%e5%92%8c%e4%bc%98%e5%8c%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/24297.html","title":{"rendered":"eBPF\u5982\u4f55\u5e2e\u52a9\u5b9e\u73b0\u9ad8\u6548\u7684\u80fd\u6e90\u6d88\u8017\u76d1\u63a7\u548c\u4f18\u5316\uff1f"},"content":{"rendered":"

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

\"eBPF\u5982\u4f55\u5e2e\u52a9\u5b9e\u73b0\u9ad8\u6548\u7684\u80fd\u6e90\u6d88\u8017\u76d1\u63a7\u548c\u4f18\u5316\uff1f\"<\/p>\n\n<\/p>\n\n\n\n

\u5728\u5f53\u4eca\u6570\u5b57\u5316\u65f6\u4ee3\uff0c\u80fd\u6e90\u6d88\u8017\u5df2\u6210\u4e3a\u5168\u7403\u5173\u6ce8\u7684\u7126\u70b9\u3002\u968f\u7740\u6570\u636e\u4e2d\u5fc3\u7684\u89c4\u6a21\u4e0d\u65ad\u6269\u5927\uff0c\u4ee5\u53ca\u4e91\u8ba1\u7b97\u548c\u8fb9\u7f18\u8ba1\u7b97\u7684\u666e\u53ca\uff0c\u5982\u4f55\u9ad8\u6548\u76d1\u63a7\u548c\u4f18\u5316\u80fd\u6e90\u6d88\u8017\u6210\u4e3a\u4e86\u4f01\u4e1a\u548c\u7814\u7a76\u673a\u6784\u9762\u4e34\u7684\u91cd\u8981\u6311\u6218\u3002\u4f20\u7edf\u7684\u80fd\u6e90\u76d1\u63a7\u65b9\u6cd5\u5f80\u5f80\u4f9d\u8d56\u4e8e\u786c\u4ef6\u4f20\u611f\u5668\u548c\u590d\u6742\u7684\u8f6f\u4ef6\u7cfb\u7edf\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u4e0d\u4ec5\u6210\u672c\u9ad8\u6602\uff0c\u800c\u4e14\u96be\u4ee5\u5b9e\u65f6\u6355\u6349\u7cfb\u7edf\u7684\u52a8\u6001\u53d8\u5316\u3002eBPF\uff08Extended Berkeley Packet Filter\uff09\u4f5c\u4e3a\u4e00\u79cd\u65b0\u5174\u7684\u6280\u672f\uff0c\u6b63\u5728\u4e3a\u80fd\u6e90\u6d88\u8017\u76d1\u63a7\u548c\u4f18\u5316\u5e26\u6765\u9769\u547d\u6027\u7684\u53d8\u5316\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8eBPF\u5982\u4f55\u901a\u8fc7\u5176\u72ec\u7279\u7684\u80fd\u529b\uff0c\u5e2e\u52a9\u5b9e\u73b0\u9ad8\u6548\u7684\u80fd\u6e90\u6d88\u8017\u76d1\u63a7\u548c\u4f18\u5316\u3002<\/p>\n\n\n\n\n

eBPF\u7b80\u4ecb\uff1a\u4ece\u7f51\u7edc\u76d1\u63a7\u5230\u7cfb\u7edf\u6027\u80fd\u5206\u6790<\/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\u5df2\u7ecf\u8fdc\u8fdc\u8d85\u51fa\u4e86\u7f51\u7edc\u9886\u57df\u3002eBPF\u5141\u8bb8\u7528\u6237\u5728\u4e0d\u4fee\u6539\u5185\u6838\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u52a8\u6001\u5730\u5c06\u7a0b\u5e8f\u52a0\u8f7d\u5230\u5185\u6838\u4e2d\u8fd0\u884c<\/strong>\u3002\u8fd9\u79cd\u80fd\u529b\u4f7f\u5f97eBPF\u6210\u4e3a\u4e86\u7cfb\u7edf\u6027\u80fd\u5206\u6790\u548c\u76d1\u63a7\u7684\u5f3a\u5927\u5de5\u5177\u3002\u901a\u8fc7eBPF\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5b9e\u65f6\u76d1\u63a7\u7cfb\u7edf\u7684\u5404\u79cd\u6307\u6807\uff0c\u5305\u62ecCPU\u4f7f\u7528\u7387\u3001\u5185\u5b58\u5360\u7528\u3001\u78c1\u76d8I\/O\u7b49\uff0c\u800c\u8fd9\u4e9b\u6307\u6807\u6b63\u662f\u80fd\u6e90\u6d88\u8017\u7684\u5173\u952e\u5f71\u54cd\u56e0\u7d20\u3002<\/p>\n\n\n\n\n

eBPF\u5728\u80fd\u6e90\u6d88\u8017\u76d1\u63a7\u4e2d\u7684\u5e94\u7528<\/h3>\n\n\n\n\n

1. \u5b9e\u65f6\u76d1\u63a7\u7cfb\u7edf\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5<\/strong><\/h4>\n\n\n\n\n

\u80fd\u6e90\u6d88\u8017\u4e0e\u7cfb\u7edf\u8d44\u6e90\u7684\u4f7f\u7528\u60c5\u51b5\u5bc6\u5207\u76f8\u5173\u3002eBPF\u53ef\u4ee5\u901a\u8fc7\u5728\u5185\u6838\u4e2d\u63d2\u5165\u63a2\u9488\uff0c\u5b9e\u65f6\u6355\u83b7CPU\u3001\u5185\u5b58\u3001\u7f51\u7edc\u548c\u78c1\u76d8\u7b49\u8d44\u6e90\u7684\u4f7f\u7528\u6570\u636e<\/strong>\u3002\u4f8b\u5982\uff0ceBPF\u53ef\u4ee5\u76d1\u63a7\u6bcf\u4e2a\u8fdb\u7a0b\u7684CPU\u4f7f\u7528\u7387\uff0c\u8bc6\u522b\u51fa\u54ea\u4e9b\u8fdb\u7a0b\u5360\u7528\u4e86\u8fc7\u591a\u7684\u8ba1\u7b97\u8d44\u6e90\uff0c\u4ece\u800c\u5bfc\u81f4\u80fd\u6e90\u6d6a\u8d39\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u5feb\u901f\u5b9a\u4f4d\u9ad8\u80fd\u8017\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u91c7\u53d6\u76f8\u5e94\u7684\u4f18\u5316\u63aa\u65bd\u3002<\/p>\n\n\n\n\n

2. \u52a8\u6001\u8c03\u6574\u7cfb\u7edf\u8d1f\u8f7d<\/strong><\/h4>\n\n\n\n\n

eBPF\u4e0d\u4ec5\u53ef\u4ee5\u76d1\u63a7\u7cfb\u7edf\u8d44\u6e90\u7684\u4f7f\u7528\u60c5\u51b5\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u52a8\u6001\u8c03\u6574\u7cfb\u7edf\u8d1f\u8f7d\u6765\u5b9e\u73b0\u80fd\u6e90\u4f18\u5316\u3002eBPF\u7a0b\u5e8f\u53ef\u4ee5\u6839\u636e\u5b9e\u65f6\u76d1\u63a7\u7684\u6570\u636e\uff0c\u81ea\u52a8\u8c03\u6574CPU\u9891\u7387\u3001\u5173\u95ed\u4e0d\u5fc5\u8981\u7684\u786c\u4ef6\u8bbe\u5907\u6216\u91cd\u65b0\u5206\u914d\u4efb\u52a1<\/strong>\u3002\u4f8b\u5982\uff0c\u5f53\u7cfb\u7edf\u68c0\u6d4b\u5230\u67d0\u4e2aCPU\u6838\u5fc3\u7684\u4f7f\u7528\u7387\u8f83\u4f4e\u65f6\uff0ceBPF\u53ef\u4ee5\u5c06\u5176\u5207\u6362\u5230\u4f4e\u529f\u8017\u6a21\u5f0f\uff0c\u4ece\u800c\u51cf\u5c11\u80fd\u6e90\u6d88\u8017\u3002\u8fd9\u79cd\u52a8\u6001\u8c03\u6574\u7684\u80fd\u529b\u4f7f\u5f97eBPF\u5728\u80fd\u6e90\u4f18\u5316\u65b9\u9762\u5177\u6709\u663e\u8457\u7684\u4f18\u52bf\u3002<\/p>\n\n\n\n\n

3. \u8bc6\u522b\u548c\u6d88\u9664\u80fd\u6e90\u6d6a\u8d39<\/strong><\/h4>\n\n\n\n\n

\u80fd\u6e90\u6d6a\u8d39\u5f80\u5f80\u6e90\u4e8e\u7cfb\u7edf\u4e2d\u7684\u4f4e\u6548\u64cd\u4f5c\u6216\u5197\u4f59\u4efb\u52a1\u3002eBPF\u53ef\u4ee5\u901a\u8fc7\u6df1\u5165\u5206\u6790\u7cfb\u7edf\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u8bc6\u522b\u51fa\u8fd9\u4e9b\u4f4e\u6548\u64cd\u4f5c<\/strong>\u3002\u4f8b\u5982\uff0ceBPF\u53ef\u4ee5\u76d1\u63a7\u6587\u4ef6\u7cfb\u7edf\u7684\u8bfb\u5199\u64cd\u4f5c\uff0c\u8bc6\u522b\u51fa\u9891\u7e41\u7684\u5c0f\u6587\u4ef6\u8bfb\u5199\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u4e0d\u4ec5\u6d88\u8017\u5927\u91cf\u7684CPU\u8d44\u6e90\uff0c\u8fd8\u4f1a\u589e\u52a0\u78c1\u76d8\u7684\u80fd\u8017\u3002\u901a\u8fc7\u8bc6\u522b\u8fd9\u4e9b\u4f4e\u6548\u64cd\u4f5c\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u4f18\u5316\u6587\u4ef6\u7cfb\u7edf\u7684\u914d\u7f6e\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\uff0c\u4ece\u800c\u964d\u4f4e\u80fd\u6e90\u6d88\u8017\u3002<\/p>\n\n\n\n\n

eBPF\u5728\u80fd\u6e90\u4f18\u5316\u4e2d\u7684\u4f18\u52bf<\/h3>\n\n\n\n\n

1. \u4f4e\u5f00\u9500\u7684\u5b9e\u65f6\u76d1\u63a7<\/strong><\/h4>\n\n\n\n\n

\u4f20\u7edf\u7684\u80fd\u6e90\u76d1\u63a7\u65b9\u6cd5\u901a\u5e38\u9700\u8981\u5728\u7cfb\u7edf\u4e2d\u90e8\u7f72\u5927\u91cf\u7684\u786c\u4ef6\u4f20\u611f\u5668\u548c\u590d\u6742\u7684\u8f6f\u4ef6\u4ee3\u7406\uff0c\u8fd9\u4e0d\u4ec5\u589e\u52a0\u4e86\u7cfb\u7edf\u7684\u590d\u6742\u6027\uff0c\u8fd8\u4f1a\u5e26\u6765\u989d\u5916\u7684\u80fd\u6e90\u6d88\u8017\u3002eBPF\u901a\u8fc7\u5728\u5185\u6838\u4e2d\u76f4\u63a5\u8fd0\u884c\u76d1\u63a7\u7a0b\u5e8f\uff0c\u907f\u514d\u4e86\u7528\u6237\u6001\u548c\u5185\u6838\u6001\u4e4b\u95f4\u7684\u9891\u7e41\u5207\u6362\uff0c\u4ece\u800c\u5927\u5927\u964d\u4f4e\u4e86\u76d1\u63a7\u7684\u5f00\u9500<\/strong>\u3002\u8fd9\u79cd\u4f4e\u5f00\u9500\u7684\u5b9e\u65f6\u76d1\u63a7\u4f7f\u5f97eBPF\u975e\u5e38\u9002\u5408\u7528\u4e8e\u80fd\u6e90\u6d88\u8017\u7684\u76d1\u63a7\u548c\u4f18\u5316\u3002<\/p>\n\n\n\n\n

2. \u7075\u6d3b\u7684\u53ef\u7f16\u7a0b\u6027<\/strong><\/h4>\n\n\n\n\n

eBPF\u7684\u53e6\u4e00\u4e2a\u663e\u8457\u4f18\u52bf\u662f\u5176\u7075\u6d3b\u7684\u53ef\u7f16\u7a0b\u6027\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u7684\u9700\u6c42\uff0c\u7f16\u5199\u81ea\u5b9a\u4e49\u7684eBPF\u7a0b\u5e8f\u6765\u76d1\u63a7\u548c\u4f18\u5316\u7cfb\u7edf\u7684\u80fd\u6e90\u6d88\u8017<\/strong>\u3002\u4f8b\u5982\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u7f16\u5199\u4e00\u4e2aeBPF\u7a0b\u5e8f\u6765\u76d1\u63a7\u7279\u5b9a\u5e94\u7528\u7a0b\u5e8f\u7684\u80fd\u6e90\u6d88\u8017\uff0c\u5e76\u6839\u636e\u76d1\u63a7\u7ed3\u679c\u52a8\u6001\u8c03\u6574\u5e94\u7528\u7a0b\u5e8f\u7684\u8fd0\u884c\u53c2\u6570\u3002\u8fd9\u79cd\u7075\u6d3b\u6027\u4f7f\u5f97eBPF\u80fd\u591f\u9002\u5e94\u5404\u79cd\u590d\u6742\u7684\u80fd\u6e90\u4f18\u5316\u573a\u666f\u3002<\/p>\n\n\n\n\n

3. \u8de8\u5e73\u53f0\u517c\u5bb9\u6027<\/strong><\/h4>\n\n\n\n\n

eBPF\u4e0d\u4ec5\u5728Linux\u7cfb\u7edf\u4e2d\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u8fd8\u9010\u6e10\u88ab\u5176\u4ed6\u64cd\u4f5c\u7cfb\u7edf\u6240\u652f\u6301\u3002\u8fd9\u79cd\u8de8\u5e73\u53f0\u7684\u517c\u5bb9\u6027\u4f7f\u5f97eBPF\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u73af\u5883\u4e2d\u5b9e\u73b0\u7edf\u4e00\u7684\u80fd\u6e90\u76d1\u63a7\u548c\u4f18\u5316<\/strong>\u3002\u4f8b\u5982\uff0c\u5728\u6df7\u5408\u4e91\u73af\u5883\u4e2d\uff0ceBPF\u53ef\u4ee5\u540c\u65f6\u76d1\u63a7\u672c\u5730\u6570\u636e\u4e2d\u5fc3\u548c\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u7684\u80fd\u6e90\u6d88\u8017\uff0c\u4ece\u800c\u5b9e\u73b0\u5168\u5c40\u7684\u80fd\u6e90\u4f18\u5316\u3002<\/p>\n\n\n\n\n

\u5b9e\u9645\u6848\u4f8b\uff1aeBPF\u5728\u6570\u636e\u4e2d\u5fc3\u80fd\u6e90\u4f18\u5316\u4e2d\u7684\u5e94\u7528<\/h3>\n\n\n\n\n

\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3eBPF\u5728\u80fd\u6e90\u6d88\u8017\u76d1\u63a7\u548c\u4f18\u5316\u4e2d\u7684\u5b9e\u9645\u5e94\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u4e00\u4e2a\u6570\u636e\u4e2d\u5fc3\u7684\u6848\u4f8b\u3002\u67d0\u5927\u578b\u6570\u636e\u4e2d\u5fc3\u901a\u8fc7\u90e8\u7f72eBPF\u7a0b\u5e8f\uff0c\u5b9e\u65f6\u76d1\u63a7\u670d\u52a1\u5668\u7684CPU\u4f7f\u7528\u7387\u548c\u6e29\u5ea6<\/strong>\u3002\u5f53\u67d0\u4e2a\u670d\u52a1\u5668\u7684CPU\u4f7f\u7528\u7387\u4f4e\u4e8e\u67d0\u4e2a\u9608\u503c\u65f6\uff0ceBPF\u7a0b\u5e8f\u4f1a\u81ea\u52a8\u5c06\u8be5\u670d\u52a1\u5668\u7684CPU\u9891\u7387\u964d\u4f4e\uff0c\u4ece\u800c\u51cf\u5c11\u80fd\u6e90\u6d88\u8017\u3002\u540c\u65f6\uff0ceBPF\u7a0b\u5e8f\u8fd8\u4f1a\u76d1\u63a7\u670d\u52a1\u5668\u7684\u6e29\u5ea6\uff0c\u5f53\u6e29\u5ea6\u8fc7\u9ad8\u65f6\uff0ceBPF\u7a0b\u5e8f\u4f1a\u81ea\u52a8\u8c03\u6574\u98ce\u6247\u7684\u8f6c\u901f\uff0c\u4ee5\u964d\u4f4e\u670d\u52a1\u5668\u7684\u51b7\u5374\u80fd\u8017\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u8be5\u6570\u636e\u4e2d\u5fc3\u6210\u529f\u5730\u5c06\u80fd\u6e90\u6d88\u8017\u964d\u4f4e\u4e8615%\u3002<\/p>\n\n\n\n\n

\u672a\u6765\u5c55\u671b\uff1aeBPF\u4e0eAI\u9a71\u52a8\u7684\u80fd\u6e90\u4f18\u5316<\/h3>\n\n\n\n\n

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