{"id":32923,"date":"2025-03-04T11:10:42","date_gmt":"2025-03-04T03:10:42","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=32923"},"modified":"2025-03-04T11:10:42","modified_gmt":"2025-03-04T03:10:42","slug":"ebpf%e5%9c%a8%e6%97%a5%e5%bf%97%e6%94%b6%e9%9b%86%e5%92%8c%e5%88%86%e6%9e%90%e4%b8%ad%e7%9a%84%e4%bc%98%e5%8a%bf%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/32923.html","title":{"rendered":"eBPF\u5728\u65e5\u5fd7\u6536\u96c6\u548c\u5206\u6790\u4e2d\u7684\u4f18\u52bf\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2025\/03\/9Stucwa1B6.jpg\" alt=\"eBPF\u5728\u65e5\u5fd7\u6536\u96c6\u548c\u5206\u6790\u4e2d\u7684\u4f18\u52bf\u662f\u4ec0\u4e48\uff1f\" ><\/p>\n<\/p>\n<p>\u5728\u4e91\u8ba1\u7b97\u4e0e\u5fae\u670d\u52a1\u67b6\u6784\u76db\u884c\u7684\u4eca\u5929\uff0c\u7cfb\u7edf\u65e5\u5fd7\u5982\u540c\u6570\u5b57\u4e16\u754c\u7684\u5fc3\u8df3\u76d1\u6d4b\u4eea\uff0c\u6bcf\u79d2\u4ea7\u751f\u6570\u4ee5\u4e07\u8ba1\u7684\u4e8b\u4ef6\u6570\u636e\u3002\u4f20\u7edf\u7684\u65e5\u5fd7\u91c7\u96c6\u5de5\u5177\u5e38\u5e38\u9677\u5165\u4e24\u96be\u56f0\u5883\u2014\u2014\u90e8\u7f72\u8be6\u5c3d\u76d1\u63a7\u4f1a\u5bfc\u81f4\u6027\u80fd\u635f\u8017\uff0c\u91c7\u7528\u62bd\u6837\u7b56\u7565\u53c8\u53ef\u80fd\u9057\u6f0f\u5173\u952e\u7ebf\u7d22\u3002\u8fd9\u79cd\u80cc\u666f\u4e0b\uff0c<strong><a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\uff08\u6269\u5c55\u578b\u4f2f\u514b\u5229\u5305\u8fc7\u6ee4\u5668\uff09<\/strong>\u6280\u672f\u6b63\u5728\u91cd\u5851\u65e5\u5fd7\u7cfb\u7edf\u7684\u6280\u672f\u8303\u5f0f\u3002\u8fd9\u9879\u8bde\u751f\u4e8eLinux\u5185\u6838\u7684\u9769\u547d\u6027\u6280\u672f\uff0c\u4e0d\u4ec5\u91cd\u65b0\u5b9a\u4e49\u4e86\u6570\u636e\u91c7\u96c6\u7684\u7cbe\u5ea6\u8fb9\u754c\uff0c\u66f4\u6253\u5f00\u4e86\u5b9e\u65f6\u89c2\u6d4b\u7cfb\u7edf\u7684\u65b0\u7ef4\u5ea6\u3002<\/p>\n<h3 id=\"\u4e00-\u5185\u6838\u7ea7\u6570\u636e\u91c7\u96c6\u7a81\u7834\u6027\u80fd\u74f6\u9888\">\u4e00\u3001<strong>\u5185\u6838\u7ea7\u6570\u636e\u91c7\u96c6\u7a81\u7834\u6027\u80fd\u74f6\u9888<\/strong><\/h3>\n<p>\u4f20\u7edf\u65e5\u5fd7\u6536\u96c6\u4f9d\u8d56\u7528\u6237\u7a7a\u95f4\u7684\u4ee3\u7406\u7a0b\u5e8f\uff0c\u8fd9\u79cd\u67b6\u6784\u5728\u91c7\u96c6\u9ad8\u9891\u4e8b\u4ef6\u65f6\u4f1a\u4ea7\u751f\u663e\u8457\u7684\u6027\u80fd\u6ce2\u52a8\u3002\u5f53\u4f7f\u7528syslog\u6216Filebeat\u91c7\u96c6\u6bcf\u79d2\u8d85\u8fc710\u4e07\u6b21\u7cfb\u7edf\u8c03\u7528\u65f6\uff0c\u4ec5\u7ebf\u7a0b\u8c03\u5ea6\u5e26\u6765\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u635f\u8017\u5c31\u53ef\u80fd\u5bfc\u81f43%-5%\u7684CPU\u8d44\u6e90\u6d6a\u8d39\u3002<\/p>\n<p><strong><a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\u901a\u8fc7\u5728\u5185\u6838\u7a7a\u95f4\u76f4\u63a5\u6267\u884c\u5b57\u8282\u7801<\/strong>\uff0c\u5b9e\u73b0\u4e86\u6570\u636e\u91c7\u96c6\u8def\u5f84\u7684\u6781\u81f4\u4f18\u5316\u3002\u5728\u5bb9\u5668\u5bc6\u5ea6\u8fbe\u5230\u6bcf\u8282\u70b950+\u7684Kubernetes\u96c6\u7fa4\u4e2d\uff0ceBPF\u7a0b\u5e8f\u53ef\u4ee5\u76f4\u63a5\u6302\u94a9\u7cfb\u7edf\u8c03\u7528\u5c42\uff0c\u4ee5\u96f6\u62f7\u8d1d\u65b9\u5f0f\u6355\u83b7\u8fdb\u7a0b\u521b\u5efa\u3001\u7f51\u7edc\u8fde\u63a5\u7b49\u4e8b\u4ef6\u3002\u5b9e\u9645\u6d4b\u8bd5\u663e\u793a\uff0c\u5728\u91c7\u96c6\u76f8\u540c\u89c4\u6a21\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e8b\u4ef6\u65f6\uff0ceBPF\u65b9\u6848\u7684CPU\u5360\u7528\u7387\u4ec5\u4e3a\u4f20\u7edf\u65b9\u6848\u76841\/8\u3002<\/p>\n<p>\u8fd9\u79cd\u6548\u7387\u63d0\u5347\u6e90\u4e8e\u4e09\u5927\u521b\u65b0\u673a\u5236\uff1a<\/p>\n<ul>\n<li><strong>\u5373\u65f6\u7f16\u8bd1\uff08JIT\uff09<\/strong>\u5c06\u5b57\u8282\u7801\u8f6c\u6362\u4e3a\u672c\u5730\u673a\u5668\u6307\u4ee4\n<\/li>\n<li><strong>\u73af\u5f62\u7f13\u51b2\u533a\uff08Ring Buffer\uff09<\/strong>\u5b9e\u73b0\u751f\u4ea7\u6d88\u8d39\u8005\u6a21\u5f0f\u7684\u65e0\u9501\u901a\u4fe1\n<\/li>\n<li><strong>\u5171\u4eab\u5185\u5b58\u6620\u5c04<\/strong>\u6d88\u9664\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u7684\u6570\u636e\u590d\u5236\n<\/li>\n<\/ul>\n<h3 id=\"\u4e8c-\u7ec6\u7c92\u5ea6\u89c2\u6d4b\u80fd\u529b\u91cd\u6784\u65e5\u5fd7\u7ef4\u5ea6\">\u4e8c\u3001<strong>\u7ec6\u7c92\u5ea6\u89c2\u6d4b\u80fd\u529b\u91cd\u6784\u65e5\u5fd7\u7ef4\u5ea6<\/strong><\/h3>\n<p>\u4f20\u7edf\u65e5\u5fd7\u7cfb\u7edf\u53d7\u9650\u4e8e\u91c7\u96c6\u5de5\u5177\u7684\u89c2\u6d4b\u80fd\u529b\uff0c\u5f80\u5f80\u53ea\u80fd\u8bb0\u5f55\u5e94\u7528\u5c42\u663e\u5f0f\u8f93\u51fa\u7684\u6587\u672c\u4fe1\u606f\u3002eBPF\u6280\u672f\u5c06\u53ef\u89c2\u6d4b\u6027\u63a8\u8fdb\u5230\u6beb\u79d2\u7ea7\u7684\u5fae\u89c2\u7ef4\u5ea6\uff0c\u80fd\u591f\u6355\u83b7\u4f20\u7edf\u5de5\u5177\u65e0\u6cd5\u89e6\u53ca\u7684\u6df1\u5c42\u7cfb\u7edf\u884c\u4e3a\u3002<\/p>\n<p>\u5728\u6df7\u5408\u4e91\u73af\u5883\u4e2d\uff0c\u57fa\u4e8eeBPF\u7684\u65e5\u5fd7\u7cfb\u7edf\u53ef\u4ee5\uff1a<\/p>\n<ol>\n<li>\u8ffd\u8e2a\u8de8\u8282\u70b9\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\u8c03\u7528\u94fe\uff0c\u7cbe\u5ea6\u8fbe\u5230\u51fd\u6570\u8c03\u7528\u7ea7\u522b\n<\/li>\n<li>\u8bb0\u5f55\u5bb9\u5668\u7f51\u7edc\u4e22\u5305\u7684\u7cbe\u786e\u65f6\u95f4\u6233\u548c\u5806\u6808\u4fe1\u606f\n<\/li>\n<li>\u5173\u8054\u7cfb\u7edf\u8c03\u7528\u5e8f\u5217\u4e0e\u5e94\u7528\u7a0b\u5e8f\u65e5\u5fd7\u7684\u65f6\u95f4\u7ebf\n<\/li>\n<\/ol>\n<p>\u67d0\u91d1\u878d\u79d1\u6280\u516c\u53f8\u901a\u8fc7<strong>eBPF\u51fd\u6570\u6302\u8f7d\u6280\u672f<\/strong>\uff0c\u6210\u529f\u5c06\u652f\u4ed8\u7f51\u5173\u7684\u6545\u969c\u8bca\u65ad\u65f6\u95f4\u4ece\u5c0f\u65f6\u7ea7\u7f29\u77ed\u81f3\u5206\u949f\u7ea7\u3002\u5176\u65e5\u5fd7\u7cfb\u7edf\u73b0\u5728\u80fd\u591f\u81ea\u52a8\u6807\u8bb0\u51fa\u56e0\u5185\u5b58\u9875\u56de\u6536\u5bfc\u81f4\u7684\u7f51\u7edc\u5ef6\u8fdf\u5c16\u5cf0\uff0c\u8fd9\u5728\u4f20\u7edf\u65e5\u5fd7\u6846\u67b6\u4e2d\u662f\u5b8c\u5168\u4e0d\u53ef\u89c1\u7684\u89c2\u6d4b\u76f2\u533a\u3002<\/p>\n<h3 id=\"\u4e09-\u96f6\u4fb5\u5165\u67b6\u6784\u5b9e\u73b0\u65e0\u7f1d\u76d1\u63a7\">\u4e09\u3001<strong>\u96f6\u4fb5\u5165\u67b6\u6784\u5b9e\u73b0\u65e0\u7f1d\u76d1\u63a7<\/strong><\/h3>\n<p>\u4f20\u7edf\u65e5\u5fd7\u4ee3\u7406\u9700\u8981\u4fee\u6539\u5e94\u7528\u914d\u7f6e\u6216\u90e8\u7f72Sidecar\u5bb9\u5668\uff0c\u8fd9\u5728\u4e91\u539f\u751f\u73af\u5883\u4e2d\u53ef\u80fd\u5f15\u53d1\u7248\u672c\u517c\u5bb9\u6027\u95ee\u9898\u3002<strong>eBPF\u7684\u96f6\u4ee3\u7801\u4fb5\u5165\u7279\u6027<\/strong>\u5f7b\u5e95\u6539\u53d8\u4e86\u8fd9\u79cd\u5c40\u9762\u2014\u2014\u8fd0\u7ef4\u4eba\u5458\u65e0\u9700\u8c03\u6574\u4e1a\u52a1\u4ee3\u7801\uff0c\u5373\u53ef\u91c7\u96c6Java\u3001Go\u7b49\u4e0d\u540c\u8bed\u8a00\u5e94\u7528\u7684\u7cfb\u7edf\u7ea7\u65e5\u5fd7\u3002<\/p>\n<p>\u8fd9\u79cd\u67b6\u6784\u4f18\u52bf\u5728Serverless\u573a\u666f\u5c24\u4e3a\u7a81\u51fa\uff1a<\/p>\n<ul>\n<li>\u81ea\u52a8\u611f\u77e5\u51fd\u6570\u5b9e\u4f8b\u7684\u521b\u5efa\/\u9500\u6bc1\u4e8b\u4ef6\n<\/li>\n<li>\u6355\u83b7\u51b7\u542f\u52a8\u671f\u95f4\u7684\u8d44\u6e90\u7ade\u4e89\u65e5\u5fd7\n<\/li>\n<li>\u8bb0\u5f55\u4e34\u65f6\u5bb9\u5668\u6587\u4ef6\u7cfb\u7edf\u7684IO\u6a21\u5f0f\n<\/li>\n<\/ul>\n<p>AWS Lambda\u5e73\u53f0\u7684\u76d1\u63a7\u6570\u636e\u663e\u793a\uff0c\u91c7\u7528eBPF\u65e5\u5fd7\u65b9\u6848\u540e\uff0c\u65e0\u670d\u52a1\u5668\u51fd\u6570\u7684\u6267\u884c\u5ef6\u8fdf\u6ce2\u52a8\u964d\u4f4e\u4e8641%\u3002\u8fd9\u662f\u56e0\u4e3a\u7701\u53bb\u4e86\u65e5\u5fd7\u4ee3\u7406\u7684\u8d44\u6e90\u6d88\u8017\uff0c\u4f7f\u5f97\u51fd\u6570\u5b9e\u4f8b\u80fd\u591f\u66f4\u5145\u5206\u5730\u5229\u7528\u5206\u914d\u7684\u8ba1\u7b97\u8d44\u6e90\u3002<\/p>\n<h3 id=\"\u56db-\u5b89\u5168\u5ba1\u8ba1\u80fd\u529b\u7684\u8303\u5f0f\u5347\u7ea7\">\u56db\u3001<strong>\u5b89\u5168\u5ba1\u8ba1\u80fd\u529b\u7684\u8303\u5f0f\u5347\u7ea7<\/strong><\/h3>\n<p>\u5728\u5b89\u5168\u9886\u57df\uff0ceBPF\u6b63\u5728\u91cd\u65b0\u5b9a\u4e49\u65e5\u5fd7\u5ba1\u8ba1\u7684\u6807\u51c6\u3002\u4f20\u7edf\u7684\u5ba1\u8ba1\u65e5\u5fd7\u5f80\u5f80\u6ede\u540e\u4e8e\u653b\u51fb\u884c\u4e3a\uff0c\u800ceBPF\u652f\u6301\u5728\u5185\u6838\u5c42\u9762\u5b9e\u65bd\u5b9e\u65f6\u7b56\u7565\u62e6\u622a\uff0c\u5e76\u540c\u6b65\u751f\u6210\u5ba1\u8ba1\u4e8b\u4ef6\u6d41\u3002<\/p>\n<p>\u67d0\u5934\u90e8\u4e91\u5382\u5546\u7684\u5b89\u5168\u56e2\u961f\u6784\u5efa\u4e86\u57fa\u4e8eeBPF\u7684<strong>\u5b9e\u65f6\u5a01\u80c1\u68c0\u6d4b\u7ba1\u9053<\/strong>\uff1a<\/p>\n<ul>\n<li>\u6302\u94a9\u8fdb\u7a0b\u6267\u884c\u7cfb\u7edf\u8c03\u7528\uff0c\u8bc6\u522b\u5f02\u5e38fork\u94fe\n<\/li>\n<li>\u76d1\u63a7\u7279\u6743\u5bb9\u5668\u7684namespace\u9003\u9038\u5c1d\u8bd5\n<\/li>\n<li>\u6355\u83b7\u5185\u5b58\u4e2d\u6076\u610f\u8f6f\u4ef6\u7684\u52a8\u6001\u7279\u5f81\n<\/li>\n<\/ul>\n<p>\u8fd9\u5957\u7cfb\u7edf\u5728\u6700\u8fd1\u7684\u4f9b\u5e94\u94fe\u653b\u51fb\u4e8b\u4ef6\u4e2d\uff0c\u6210\u529f\u5728\u653b\u51fb\u8005\u6a2a\u5411\u79fb\u52a8\u9636\u6bb5\u5c31\u89e6\u53d1\u544a\u8b66\uff0c\u76f8\u6bd4\u57fa\u4e8e\u65e5\u5fd7\u56de\u6eaf\u7684\u4f20\u7edf\u65b9\u6848\uff0c\u54cd\u5e94\u901f\u5ea6\u63d0\u5347\u4e86\u4e24\u4e2a\u6570\u91cf\u7ea7\u3002\u5ba1\u8ba1\u65e5\u5fd7\u73b0\u5728\u5305\u542b\u5b8c\u6574\u7684\u7cfb\u7edf\u8c03\u7528\u53c2\u6570\u3001\u8fd4\u56de\u503c\u53ca\u8c03\u7528\u6808\u4fe1\u606f\uff0c\u4e3a\u4e8b\u4ef6\u6eaf\u6e90\u63d0\u4f9b\u4e86\u6cd5\u5ead\u7ea7\u7684\u8bc1\u636e\u94fe\u3002<\/p>\n<h3 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