{"id":2565,"date":"2024-03-11T16:19:54","date_gmt":"2024-03-11T08:19:54","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=2565"},"modified":"2024-03-11T16:19:54","modified_gmt":"2024-03-11T08:19:54","slug":"%e4%bd%bf%e7%94%a8-ebpf-%e9%9b%b6%e6%88%90%e6%9c%ac%e8%90%bd%e5%9c%b0%e5%88%86%e5%b8%83%e5%bc%8f%e8%bf%bd%e8%b8%aa","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/2565.html","title":{"rendered":"\u4f7f\u7528 eBPF \u96f6\u6210\u672c\u843d\u5730\u5206\u5e03\u5f0f\u8ffd\u8e2a"},"content":{"rendered":"\n\t\t\t\t<![CDATA[\n<p> \u5341\u4e8c\u5e74\u524d Dapper \u5728 Google 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1%~5%\uff0c\u6211\u4eec\u4e5f\u5728\u6574\u7406\u4e00\u4e9b\u6d4b\u8bd5\u4ee3\u7801\u548c\u6d4b\u8bd5\u6570\u636e\uff0c\u540e\u7eed\u4f1a\u5206\u4eab\u51fa\u6765\u3002<br \/>\nQ8\uff5c\u5bf9\u4e8e\u591a\u865a\u62df veth \u7f51\u53e3\uff0cDeepFlow\u662f\u5982\u4f55\u91c7\u96c6\uff1f\u4ee5\u53ca\u4fdd\u8bc1\u91c7\u96c6\u6548\u7387\u7684\u5462\uff1f<br \/>\nA\uff1a\u901a\u8fc7 AF_PACKET v3 \u91c7\u96c6\u7f51\u53e3\u6d41\u91cf\uff0cMMAP \u673a\u5236\u4fdd\u8bc1\u4e86\u91c7\u96c6\u5305\u62e5\u6709\u5f88\u597d\u7684\u6027\u80fd\uff0cdeepflow-agent \u5728\u5904\u7406\u91c7\u96c6\u5305\u65f6\u4e5f\u8fdb\u884c\u4e86\u5927\u91cf\u7684\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\u4f18\u5316\uff0c\u4f8b\u5982\u907f\u514d malloc\/free \u538b\u529b\u3001\u907f\u514d\u5185\u5b58\u590d\u5236\u7b49\uff0c\u6b22\u8fce\u538b\u6d4b\u3002<br \/>\nQ9\uff5c\u4f20\u7edf\u7684 ECS (\u672a\u63a5\u5165 K8s \u7684 \u673a\u5668), \u662f\u5426\u652f\u6301\u63a5\u5165 DeepFlow, \u63a5\u5165\u662f\u5426\u56f0\u96be\uff1f<br \/>\nA\uff1a\u652f\u6301\uff0c\u64cd\u4f5c\u975e\u5e38\u7b80\u5355\uff0c\u53ef\u53c2\u8003\u5728\u7ebf\u6587\u6863\uff1a<br \/>\nhttps:\/\/deepflow.io\/docs\/zh\/install\/legacy-host\/<br \/>\nQ10\uff5c\u6ca1\u6709 Tracing ID \u7684\u60c5\u51b5\u4e0b\uff0ceBPF \u662f\u5982\u4f55\u5feb\u901f\u5173\u8054\u4e0aLogging \u7684\uff1f<br \/>\nA\uff1a\u901a\u8fc7\u7ebf\u7a0b ID \u548c\u65f6\u95f4\u4fe1\u606f\uff0c\u6211\u4eec\u652f\u6301\u4e86\u5c06 eBPF span \u4e0e\u4ea7\u751f\u8be5 span \u7684\u7ebf\u7a0b\u6240\u505a\u7684 IO \u64cd\u4f5c\u8fdb\u884c\u5173\u8054\u3002<br \/>\nQ11\uff5c\u5f53\u4e00\u4e2a\u670d\u52a1\u90e8\u7f72\u5728\u4e3b\u5907\u73af\u5883\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528 DeepFlow \u7684\u6548\u679c\u5982\u4f55\uff1f<br \/>\nA\uff1a\u5bf9 DeepFlow \u6ca1\u6709\u5f71\u54cd\uff0c\u800c\u4e14\u80fd\u5c55\u73b0\u4e3b\u5907 Instance \u5404\u81ea\u7684\u6027\u80fd\u6307\u6807\u3001\u8bbf\u95ee\u62d3\u6251\u3001\u5206\u5e03\u5f0f\u8ffd\u8e2a\u6570\u636e\u7b49\u3002<br \/>\nQ12\uff5ceBPF \u672c\u8eab\u7684\u9650\u5236\uff08\u6bd4\u5982\u6307\u4ee4\u6570\uff0c\u51fd\u6570\u8c03\u7528\u7b49\uff09\u5bf9DeepFlow \u5b9e\u73b0\u5206\u5e03\u5f0f\u8ffd\u8e2a\u6709\u4ec0\u4e48\u5f71\u54cd\uff1f<br \/>\nA\uff1a\u6211\u4eec\u5728\u8fd9\u4e9b\u9650\u5236\u4e4b\u4e0b\u8fdb\u884c\u4e86\u5927\u91cf\u7684\u5de5\u7a0b\u4f18\u5316\uff0c\u6b22\u8fce\u9605\u8bfb\u4ee3\u7801\u4e86\u89e3\u3002<br \/>\nQ13\uff5cDeepFlow \u662f\u5426\u5177\u5907\u4e0a\u751f\u4ea7\u7684\u6761\u4ef6\uff1f\u8d35\u516c\u53f8\u7684\u751f\u4ea7\u73af\u5883\u5df2\u7ecf\u5927\u89c4\u6a21\u4f7f\u7528\u4e86\uff1f\u5bf9\u4ee3\u7801\u7684\u4fb5\u5165\u6027\uff1f\u6027\u80fd\u6d88\u8017\u600e\u4e48\u6837\uff1f<br \/>\nA\uff1aDeepFlow \u5df2\u7ecf\u5728\u91d1\u878d\u3001\u80fd\u6e90\u3001\u8fd0\u8425\u5546\u7b49 500 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