{"id":31873,"date":"2025-01-09T21:43:35","date_gmt":"2025-01-09T13:43:35","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=23697"},"modified":"2025-01-09T21:43:35","modified_gmt":"2025-01-09T13:43:35","slug":"ebpf%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e8%b7%a8%e4%ba%91%e5%b9%b3%e5%8f%b0%e7%9a%84%e5%86%85%e6%a0%b8%e6%89%a9%e5%b1%95%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/31873.html","title":{"rendered":"eBPF\u5982\u4f55\u5b9e\u73b0\u8de8\u4e91\u5e73\u53f0\u7684\u5185\u6838\u6269\u5c55\uff1f"},"content":{"rendered":"<p>\t\t\t\t<![CDATA[\n                \n\n<p style=\"text-align: center;\">\n\n<p><img decoding=\"async\" src=\"https:\/\/pic.zadbj010.com\/2025\/9ced67db612c49c.jpg\" alt=\"eBPF\u5982\u4f55\u5b9e\u73b0\u8de8\u4e91\u5e73\u53f0\u7684\u5185\u6838\u6269\u5c55\uff1f\" ><\/p>\n\n<\/p>\n\n\n\n<p>\u5728\u5f53\u4eca\u4e91\u8ba1\u7b97\u65f6\u4ee3\uff0c\u4f01\u4e1a\u5f80\u5f80\u9700\u8981\u5728\u591a\u4e2a\u4e91\u5e73\u53f0\u4e4b\u95f4\u90e8\u7f72\u548c\u7ba1\u7406\u5e94\u7528\uff0c\u8fd9\u79cd\u8de8\u4e91\u67b6\u6784\u5e26\u6765\u4e86\u524d\u6240\u672a\u6709\u7684\u7075\u6d3b\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002\u7136\u800c\uff0c\u8fd9\u79cd\u5206\u5e03\u5f0f\u73af\u5883\u4e5f\u7ed9\u7cfb\u7edf\u76d1\u63a7\u3001\u5b89\u5168\u9632\u62a4\u548c\u6027\u80fd\u4f18\u5316\u5e26\u6765\u4e86\u5de8\u5927\u6311\u6218\u3002\u4f20\u7edf\u7684\u5185\u6838\u6269\u5c55\u65b9\u5f0f\u7531\u4e8e\u9700\u8981\u91cd\u65b0\u7f16\u8bd1\u5185\u6838\u6216\u52a0\u8f7d\u5185\u6838\u6a21\u5757\uff0c\u96be\u4ee5\u9002\u5e94\u5feb\u901f\u53d8\u5316\u7684\u4e91\u73af\u5883\u3002\u8fd9\u65f6\uff0c<strong>eBPF<\/strong>\uff08extended Berkeley Packet Filter\uff09\u6280\u672f\u5e94\u8fd0\u800c\u751f\uff0c\u4e3a\u8de8\u4e91\u5e73\u53f0\u7684\u5185\u6838\u6269\u5c55\u63d0\u4f9b\u4e86\u4e00\u79cd\u9769\u547d\u6027\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n\n\n\n\n<p>eBPF\u6700\u521d\u8bbe\u8ba1\u7528\u4e8e\u7f51\u7edc\u6570\u636e\u5305\u8fc7\u6ee4\uff0c\u4f46\u7ecf\u8fc7\u591a\u5e74\u53d1\u5c55\uff0c\u5b83\u5df2\u7ecf\u6f14\u53d8\u6210\u4e00\u4e2a\u901a\u7528\u7684\u5185\u6838\u6269\u5c55\u6846\u67b6\u3002<strong>eBPF\u7684\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\u5b83\u5141\u8bb8\u5728\u4e0d\u4fee\u6539\u5185\u6838\u6e90\u4ee3\u7801\u6216\u52a0\u8f7d\u5185\u6838\u6a21\u5757\u7684\u60c5\u51b5\u4e0b\uff0c\u5b89\u5168\u3001\u9ad8\u6548\u5730\u6269\u5c55\u5185\u6838\u529f\u80fd<\/strong>\u3002\u8fd9\u79cd\u7279\u6027\u4f7f\u5f97eBPF\u7279\u522b\u9002\u5408\u5728\u8de8\u4e91\u73af\u5883\u4e2d\u4f7f\u7528\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5728\u4e0d\u540c\u4e91\u5e73\u53f0\u7684\u5185\u6838\u4e0a\u8fd0\u884c\u76f8\u540c\u7684\u7a0b\u5e8f\uff0c\u5b9e\u73b0\u4e00\u81f4\u7684\u529f\u80fd\u6269\u5c55\u3002<\/p>\n\n\n\n\n<h3>eBPF\u7684\u8de8\u4e91\u5e73\u53f0\u80fd\u529b<\/h3>\n\n\n\n\n<p>eBPF\u7684\u8de8\u5e73\u53f0\u80fd\u529b\u4e3b\u8981\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n\n<ol>\n\n\n<li>\n\n<p><strong>\u5185\u6838\u7248\u672c\u517c\u5bb9\u6027<\/strong>\uff1aeBPF\u7a0b\u5e8f\u901a\u8fc7LLVM\u7f16\u8bd1\u6210\u5b57\u8282\u7801\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u5185\u6838\u7248\u672c\u4e0a\u8fd0\u884c\u3002\u867d\u7136\u4e0d\u540c\u5185\u6838\u7248\u672c\u652f\u6301\u7684eBPF\u7279\u6027\u53ef\u80fd\u6709\u6240\u5dee\u5f02\uff0c\u4f46\u6838\u5fc3\u529f\u80fd\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n\n\n<\/li>\n\n\n\n\n<li>\n\n<p><strong>\u67b6\u6784\u72ec\u7acb\u6027<\/strong>\uff1aeBPF\u5b57\u8282\u7801\u662f\u5e73\u53f0\u65e0\u5173\u7684\uff0c\u53ef\u4ee5\u5728x86\u3001ARM\u7b49\u591a\u79cdCPU\u67b6\u6784\u4e0a\u8fd0\u884c\u3002\u8fd9\u5bf9\u4e8e\u8de8\u4e91\u5e73\u53f0\u90e8\u7f72\u5c24\u4e3a\u91cd\u8981\uff0c\u56e0\u4e3a\u4e0d\u540c\u7684\u4e91\u670d\u52a1\u5546\u53ef\u80fd\u4f7f\u7528\u4e0d\u540c\u7684\u786c\u4ef6\u67b6\u6784\u3002<\/p>\n\n\n<\/li>\n\n\n\n\n<li>\n\n<p><strong>\u5b89\u5168\u6c99\u7bb1\u673a\u5236<\/strong>\uff1aeBPF\u7a0b\u5e8f\u8fd0\u884c\u5728\u5185\u6838\u7684\u865a\u62df\u673a\u4e2d\uff0c\u901a\u8fc7\u4e25\u683c\u7684\u9a8c\u8bc1\u5668\u786e\u4fdd\u4e0d\u4f1a\u5bfc\u81f4\u5185\u6838\u5d29\u6e83\u3002\u8fd9\u79cd\u5b89\u5168\u673a\u5236\u4f7f\u5f97eBPF\u7a0b\u5e8f\u53ef\u4ee5\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u5b89\u5168\u90e8\u7f72\uff0c\u65e0\u9700\u62c5\u5fc3\u5f71\u54cd\u7cfb\u7edf\u7a33\u5b9a\u6027\u3002<\/p>\n\n\n<\/li>\n\n\n<\/ol>\n\n\n\n\n<h3>eBPF\u5728\u8de8\u4e91\u73af\u5883\u4e2d\u7684\u5178\u578b\u5e94\u7528<\/h3>\n\n\n\n\n<p>\u5728\u8de8\u4e91\u73af\u5883\u4e2d\uff0ceBPF\u6280\u672f\u53ef\u4ee5\u5e94\u7528\u4e8e\u591a\u4e2a\u9886\u57df\uff1a<\/p>\n\n\n\n\n<ol>\n\n\n<li>\n\n<p><strong>\u7edf\u4e00\u7684\u53ef\u89c2\u6d4b\u6027\u5e73\u53f0<\/strong>\uff1a<\/p>\n\n\n\n\n<ul>\n\n\n<li>\u901a\u8fc7eBPF\u7a0b\u5e8f\u6536\u96c6\u7cfb\u7edf\u8c03\u7528\u3001\u7f51\u7edc\u6d41\u91cf\u3001\u6027\u80fd\u6307\u6807\u7b49\u6570\u636e<\/li>\n\n\n\n\n<li>\u5728\u4e0d\u540c\u4e91\u5e73\u53f0\u4e0a\u5b9e\u73b0\u4e00\u81f4\u7684\u76d1\u63a7\u6307\u6807<\/li>\n\n\n\n\n<li>\u652f\u6301\u5b9e\u65f6\u5206\u6790\u548c\u5386\u53f2\u6570\u636e\u5b58\u50a8<\/li>\n\n\n<\/ul>\n\n\n<\/li>\n\n\n\n\n<li>\n\n<p><strong>\u8de8\u4e91\u7f51\u7edc\u5b89\u5168<\/strong>\uff1a<\/p>\n\n\n\n\n<ul>\n\n\n<li>\u5b9e\u73b0\u7edf\u4e00\u7684\u7f51\u7edc\u6d41\u91cf\u76d1\u63a7\u548c\u8fc7\u6ee4<\/li>\n\n\n\n\n<li>\u68c0\u6d4b\u548c\u963b\u6b62\u8de8\u4e91\u5e73\u53f0\u7684\u7f51\u7edc\u653b\u51fb<\/li>\n\n\n\n\n<li>\u63d0\u4f9b\u7ec6\u7c92\u5ea6\u7684\u8bbf\u95ee\u63a7\u5236<\/li>\n\n\n<\/ul>\n\n\n<\/li>\n\n\n\n\n<li>\n\n<p><strong>\u6027\u80fd\u4f18\u5316<\/strong>\uff1a<\/p>\n\n\n\n\n<ul>\n\n\n<li>\u5206\u6790\u8de8\u4e91\u5e94\u7528\u7684\u6027\u80fd\u74f6\u9888<\/li>\n\n\n\n\n<li>\u4f18\u5316\u7f51\u7edc\u4f20\u8f93\u548c\u5b58\u50a8I\/O<\/li>\n\n\n\n\n<li>\u5b9e\u73b0\u667a\u80fd\u8d1f\u8f7d\u5747\u8861<\/li>\n\n\n<\/ul>\n\n\n<\/li>\n\n\n<\/ol>\n\n\n\n\n<h3>eBPF\u8de8\u4e91\u5e73\u53f0\u5b9e\u73b0\u7684\u6311\u6218\u4e0e\u89e3\u51b3\u65b9\u6848<\/h3>\n\n\n\n\n<p>\u5c3d\u7ba1eBPF\u5177\u6709\u5f3a\u5927\u7684\u8de8\u5e73\u53f0\u80fd\u529b\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u4ecd\u9762\u4e34\u4e00\u4e9b\u6311\u6218\uff1a<\/p>\n\n\n\n\n<ol>\n\n\n<li>\n\n<p><strong>\u5185\u6838\u7248\u672c\u5dee\u5f02<\/strong>\uff1a<\/p>\n\n\n\n\n<ul>\n\n\n<li>\u4e0d\u540c\u4e91\u5e73\u53f0\u53ef\u80fd\u4f7f\u7528\u4e0d\u540c\u7248\u672c\u7684\u5185\u6838<\/li>\n\n\n\n\n<li>\u89e3\u51b3\u65b9\u6848\uff1a\u4f7f\u7528eBPF\u7279\u6027\u68c0\u6d4b\u673a\u5236\uff0c\u52a8\u6001\u8c03\u6574\u7a0b\u5e8f\u529f\u80fd<\/li>\n\n\n<\/ul>\n\n\n<\/li>\n\n\n\n\n<li>\n\n<p><strong>\u6027\u80fd\u5f00\u9500<\/strong>\uff1a<\/p>\n\n\n\n\n<ul>\n\n\n<li>eBPF\u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