Linux\u670d\u52a1\u5668CPU\u4f18\u5316\uff1aProfiling\u4e0e\u5185\u6838\u6df1\u5ea6\u8c03\u4f18<\/title><\/p>\n<p><\/head><br \/>\n<body><\/p>\n<h1>Linux\u670d\u52a1\u5668CPU\u4f18\u5316\uff1aProfiling\u4e0e\u5185\u6838\u6df1\u5ea6\u8c03\u4f18<\/h1>\n<p>CPU\u4f18\u5316\uff0c\u662f\u4efb\u4f55\u9ad8\u6027\u80fdLinux\u670d\u52a1\u5668\u8c03\u4f18\u7684\u6838\u5fc3\u73af\u8282\u3002\u65e0\u8bba\u662fWeb\u670d\u52a1\u5668\u3001\u6570\u636e\u5e93\u670d\u52a1\u5668\uff0c\u8fd8\u662f\u8ba1\u7b97\u5bc6\u96c6\u578b\u5e94\u7528\uff0cCPU\u74f6\u9888\u90fd\u53ef\u80fd\u5bfc\u81f4\u54cd\u5e94\u7f13\u6162\u3001\u6027\u80fd\u4e0b\u964d\u3002\u4f18\u5316\u4e0d\u4ec5\u4ec5\u662f\u5347\u7ea7\u786c\u4ef6\uff0c\u66f4\u91cd\u8981\u7684\u662f\u6df1\u5165\u4e86\u89e3\u5e94\u7528\u7a0b\u5e8f\u884c\u4e3a\uff0c\u7cbe\u51c6\u5b9a\u4f4d\u74f6\u9888\uff0c\u5e76\u901a\u8fc7\u8f6f\u4ef6\u5c42\u9762\u7684\u8c03\u6574\u6765\u63d0\u5347\u6548\u7387\u3002<\/p>\n<h2>\u6027\u80fd\u5256\u6790\uff08Profiling\uff09\u7684\u91cd\u8981\u6027<\/h2>\n<p>\u4f18\u5316\u5de5\u4f5c\u7684\u7b2c\u4e00\u6b65\uff0c\u4e5f\u662f\u6700\u5173\u952e\u7684\u4e00\u6b65\uff0c\u662f\u6027\u80fd\u5256\u6790\uff08Profiling\uff09\u3002\u76f2\u76ee\u731c\u6d4b\u6216\u57fa\u4e8e\u76f4\u89c9\u7684\u4f18\u5316\u5f80\u5f80\u6548\u7387\u4f4e\u4e0b\uff0c\u751a\u81f3\u9002\u5f97\u5176\u53cd\u3002Profiling\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u4e86\u89e3CPU\u7684\u8d44\u6e90\u6d88\u8017\u60c5\u51b5\uff0c\u627e\u5230\u771f\u6b63\u7684\u6027\u80fd\u74f6\u9888\u3002\u5e38\u7528\u7684\u5de5\u5177\u6709\u5f88\u591a\uff0c\u6bd4\u5982\uff1a<\/p>\n<ul>\n<li><code>perf<\/code>\uff1aLinux\u5185\u6838\u81ea\u5e26\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u529f\u80fd\u5f3a\u5927\uff0c\u80fd\u591f\u6df1\u5165\u5230\u5185\u6838\u5c42\u9762\uff0c\u4f46\u4f7f\u7528\u8d77\u6765\u76f8\u5bf9\u590d\u6742\u3002<\/li>\n<li><code>top<\/code>\/<code>htop<\/code>\uff1a\u7b80\u5355\u6613\u7528\uff0c\u53ef\u4ee5\u5b9e\u65f6\u76d1\u63a7CPU\u4f7f\u7528\u7387\u3001\u5185\u5b58\u5360\u7528\u7b49\u4fe1\u606f\uff0c\u5feb\u901f\u53d1\u73b0CPU\u5360\u7528\u7387\u9ad8\u7684\u8fdb\u7a0b\u3002<\/li>\n<li><code>gprof<\/code>\uff1a\u7528\u4e8eC\/C++\u7a0b\u5e8f\u7684Profiling\uff0c\u53ef\u4ee5\u5206\u6790\u51fd\u6570\u8c03\u7528\u5173\u7cfb\u548c\u6267\u884c\u65f6\u95f4\u3002<\/li>\n<li><code>\u706b\u7130\u56fe<\/code>\uff1a\u4e00\u79cd\u53ef\u89c6\u5316Profiling\u7ed3\u679c\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u76f4\u89c2\u5730\u5c55\u793aCPU\u7684\u8c03\u7528\u6808\uff0c\u5e2e\u52a9\u5feb\u901f\u5b9a\u4f4d\u70ed\u70b9\u51fd\u6570\u3002<\/li>\n<\/ul>\n<p>\u6211\u4e2a\u4eba\u7684\u7ecf\u9a8c\u662f\uff0c<code>perf<\/code>\u914d\u5408\u706b\u7130\u56fe\u5f80\u5f80\u80fd\u591f\u63d0\u4f9b\u6700\u6df1\u5165\u7684\u5206\u6790\u7ed3\u679c\u3002\u901a\u8fc7<code>perf record<\/code>\u8bb0\u5f55\u4e00\u6bb5\u65f6\u95f4\u5185\u7684CPU\u4e8b\u4ef6\uff0c\u7136\u540e\u4f7f\u7528\u706b\u7130\u56fe\u5de5\u5177\u751f\u6210\u53ef\u89c6\u5316\u62a5\u544a\uff0c\u53ef\u4ee5\u6e05\u6670\u5730\u770b\u5230\u54ea\u4e9b\u51fd\u6570\u6d88\u8017\u4e86\u6700\u591a\u7684CPU\u65f6\u95f4\u3002<\/p>\n<h2>\u5e38\u89c1\u7684CPU\u74f6\u9888\u53ca\u5176\u4f18\u5316\u7b56\u7565<\/h2>\n<p>\u627e\u5230\u4e86\u74f6\u9888\u4e4b\u540e\uff0c\u4e0b\u4e00\u6b65\u5c31\u662f\u5236\u5b9a\u4f18\u5316\u7b56\u7565\u3002\u5e38\u89c1\u7684CPU\u74f6\u9888\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8CPU\u5360\u7528\u7387\u7684\u8fdb\u7a0b\uff1a<\/strong> \u53ef\u80fd\u662f\u4ee3\u7801\u6548\u7387\u4f4e\u4e0b\u3001\u7b97\u6cd5\u590d\u6742\u5ea6\u8fc7\u9ad8\u3001\u6216\u8005\u5b58\u5728\u6b7b\u5faa\u73af\u7b49\u95ee\u9898\u3002\u9700\u8981\u6df1\u5165\u4ee3\u7801\u5c42\u9762\u8fdb\u884c\u4f18\u5316\uff0c\u4f8b\u5982\u6539\u8fdb\u7b97\u6cd5\u3001\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u3001\u4f18\u5316\u6570\u636e\u7ed3\u6784\u7b49\u3002<\/li>\n<li><strong>\u9891\u7e41\u7684\u4e0a\u4e0b\u6587\u5207\u6362\uff1a<\/strong> \u8fc7\u591a\u7684\u8fdb\u7a0b\/\u7ebf\u7a0b\u7ade\u4e89CPU\u8d44\u6e90\uff0c\u5bfc\u81f4\u9891\u7e41\u7684\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u6d88\u8017\u5927\u91cfCPU\u65f6\u95f4\u3002\u53ef\u4ee5\u8003\u8651\u51cf\u5c11\u8fdb\u7a0b\/\u7ebf\u7a0b\u6570\u91cf\u3001\u4f18\u5316\u540c\u6b65\u673a\u5236\uff08\u4f8b\u5982\u4f7f\u7528\u65e0\u9501\u6570\u636e\u7ed3\u6784\uff09\u3001\u8c03\u6574\u8fdb\u7a0b\/\u7ebf\u7a0b\u4f18\u5148\u7ea7\u7b49\u3002<\/li>\n<li><strong>\u5927\u91cf\u7684\u7cfb\u7edf\u8c03\u7528\uff1a<\/strong> \u7cfb\u7edf\u8c03\u7528\u9700\u8981\u4ece\u7528\u6237\u6001\u5207\u6362\u5230\u5185\u6838\u6001\uff0c\u5f00\u9500\u8f83\u5927\u3002\u5e94\u8be5\u5c3d\u91cf\u51cf\u5c11\u7cfb\u7edf\u8c03\u7528\u7684\u6b21\u6570\uff0c\u4f8b\u5982\u4f7f\u7528\u6279\u91cf\u64cd\u4f5c\u3001\u51cf\u5c11\u6587\u4ef6I\/O\u7b49\u3002<\/li>\n<li><strong>\u9501\u7ade\u4e89\uff1a<\/strong> \u591a\u7ebf\u7a0b\u7a0b\u5e8f\u4e2d\uff0c\u9501\u7ade\u4e89\u662f\u5e38\u89c1\u7684\u6027\u80fd\u74f6\u9888\u3002\u53ef\u4ee5\u4f7f\u7528\u66f4\u7ec6\u7c92\u5ea6\u7684\u9501\u3001\u65e0\u9501\u6570\u636e\u7ed3\u6784\u3001\u6216\u8005\u5176\u4ed6\u5e76\u53d1\u7f16\u7a0b\u6280\u672f\u6765\u51cf\u5c11\u9501\u7ade\u4e89\u3002<\/li>\n<li><strong>\u7f13\u5b58\u672a\u547d\u4e2d\uff1a<\/strong> CPU\u8bbf\u95ee\u5185\u5b58\u7684\u901f\u5ea6\u8fdc\u6162\u4e8e\u8bbf\u95ee\u7f13\u5b58\uff0c\u9891\u7e41\u7684\u7f13\u5b58\u672a\u547d\u4e2d\u4f1a\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316\u6570\u636e\u5e03\u5c40\u3001\u4f7f\u7528\u9884\u53d6\u6280\u672f\u3001\u6216\u8005\u8c03\u6574\u7f13\u5b58\u53c2\u6570\u6765\u63d0\u9ad8\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/li>\n<\/ul>\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6211\u66fe\u7ecf\u9047\u5230\u4e00\u4e2aWeb\u670d\u52a1\u5668CPU\u5360\u7528\u7387\u6301\u7eed\u504f\u9ad8\u7684\u95ee\u9898\u3002\u901a\u8fc7<code>perf<\/code>\u5206\u6790\u53d1\u73b0\uff0c\u5927\u90e8\u5206CPU\u65f6\u95f4\u90fd\u6d88\u8017\u5728\u5b57\u7b26\u4e32\u5904\u7406\u51fd\u6570\u4e0a\u3002\u540e\u6765\u53d1\u73b0\uff0c\u4ee3\u7801\u4e2d\u5b58\u5728\u5927\u91cf\u7684\u5b57\u7b26\u4e32\u62fc\u63a5\u64cd\u4f5c\uff0c\u6bcf\u6b21\u62fc\u63a5\u90fd\u4f1a\u521b\u5efa\u65b0\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\uff0c\u5bfc\u81f4\u9891\u7e41\u7684\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u3002\u4f18\u5316\u65b9\u6848\u5f88\u7b80\u5355\uff0c\u4f7f\u7528StringBuilder\u4ee3\u66ff\u5b57\u7b26\u4e32\u62fc\u63a5\uff0cCPU\u5360\u7528\u7387\u7acb\u523b\u964d\u4e86\u4e0b\u6765\u3002<\/p>\n<h2>\u5185\u6838\u6df1\u5ea6\u8c03\u4f18<\/h2>\n<p>\u9664\u4e86\u5e94\u7528\u7a0b\u5e8f\u5c42\u9762\u7684\u4f18\u5316\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5185\u6838\u8c03\u4f18\u6765\u63d0\u5347CPU\u6027\u80fd\u3002\u8fd9\u90e8\u5206\u9700\u8981\u8c28\u614e\u64cd\u4f5c\uff0c\u9519\u8bef\u7684\u914d\u7f6e\u53ef\u80fd\u5bfc\u81f4\u7cfb\u7edf\u4e0d\u7a33\u5b9a\u3002\u5e38\u89c1\u7684\u5185\u6838\u8c03\u4f18\u53c2\u6570\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>vm.swappiness<\/code>\uff1a\u63a7\u5236\u7cfb\u7edf\u4f7f\u7528Swap\u7684\u503e\u5411\u3002\u8f83\u9ad8\u7684\u503c\u610f\u5473\u7740\u66f4\u79ef\u6781\u5730\u4f7f\u7528Swap\uff0c\u53ef\u4ee5\u91ca\u653e\u5185\u5b58\uff0c\u4f46\u4f1a\u964d\u4f4e\u6027\u80fd\u3002\u8f83\u4f4e\u7684\u503c\u610f\u5473\u7740\u5c3d\u91cf\u907f\u514d\u4f7f\u7528Swap\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4OOM\uff08Out of Memory\uff09\u3002<\/li>\n<li><code>kernel.sched_latency_ns<\/code>\/<code>kernel.sched_wakeup_granularity_ns<\/code>\uff1a\u63a7\u5236\u8c03\u5ea6\u5668\u7684\u884c\u4e3a\u3002\u53ef\u4ee5\u8c03\u6574\u8fd9\u4e9b\u53c2\u6570\u6765\u4f18\u5316\u8fdb\u7a0b\/\u7ebf\u7a0b\u7684\u8c03\u5ea6\uff0c\u63d0\u9ad8\u54cd\u5e94\u901f\u5ea6\u3002<\/li>\n<li><code>\/proc\/sys\/kernel\/pid_max<\/code>\uff1a\u8bbe\u7f6e\u7cfb\u7edf\u5141\u8bb8\u7684\u6700\u5927PID\u6570\u91cf\u3002\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u589e\u52a0\u8fd9\u4e2a\u503c\u3002<\/li>\n<\/ul>\n<p>\u4fee\u6539\u5185\u6838\u53c2\u6570\u53ef\u4ee5\u4f7f\u7528<code>sysctl<\/code>\u547d\u4ee4\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>sysctl -w vm.swappiness=10\n<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4fee\u6539\u5185\u6838\u53c2\u6570\u540e\uff0c\u9700\u8981\u91cd\u542f\u7cfb\u7edf\u624d\u80fd\u751f\u6548\u3002\u5efa\u8bae\u5728\u4fee\u6539\u4e4b\u524d\u5907\u4efd\u914d\u7f6e\u6587\u4ef6\uff0c\u5e76\u4ed4\u7ec6\u6d4b\u8bd5\uff0c\u786e\u4fdd\u4fee\u6539\u540e\u7684\u914d\u7f6e\u4e0d\u4f1a\u5bfc\u81f4\u95ee\u9898\u3002<\/p>\n<h2>vDisk\u4e91\u684c\u9762\u4e0e\u672c\u5730\u8ba1\u7b97\u8d44\u6e90\u4f18\u5316<\/h2>\n<p>\u5728\u865a\u62df\u5316\u73af\u5883\u4e2d\uff0cCPU\u4f18\u5316\u540c\u6837\u91cd\u8981\u3002\u4f20\u7edf\u7684VDI\u67b6\u6784\uff0c\u6240\u6709\u8ba1\u7b97\u90fd\u5728\u670d\u52a1\u5668\u7aef\u8fdb\u884c\uff0c\u5bf9\u670d\u52a1\u5668CPU\u8d44\u6e90\u8981\u6c42\u6781\u9ad8\u3002\u800c<strong>vDisk\u4e91\u684c\u9762<\/strong>\uff0c\u662f\u4e00\u79cd\u57fa\u4e8e\u672c\u5730\u8ba1\u7b97\u8d44\u6e90\u7684\u4e91\u684c\u9762\u7cfb\u7edf\uff0c\u5b83\u5c06\u5927\u90e8\u5206\u8ba1\u7b97\u4efb\u52a1\u653e\u5728\u5ba2\u6237\u7aef\u8fdb\u884c\uff0c\u51cf\u8f7b\u4e86\u670d\u52a1\u5668\u7684CPU\u538b\u529b\uff0c\u80fd\u591f\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u66f4\u4f4e\u7684\u5ef6\u8fdf\u3002\u8fd9\u610f\u5473\u7740\uff0c\u7528\u6237\u5728\u4e91\u684c\u9762\u4e0a\u7684\u4f53\u9a8c\u66f4\u6d41\u7545\uff0c\u54cd\u5e94\u66f4\u5feb\u3002\u56e0\u6b64\uff0c\u5728\u9009\u62e9\u4e91\u684c\u9762\u89e3\u51b3\u65b9\u6848\u65f6\uff0cvDisk\u662f\u503c\u5f97\u8003\u8651\u7684\u9009\u9879\uff0c\u5b83\u80fd\u5728\u4fdd\u8bc1\u96c6\u4e2d\u7ba1\u7406\u7684\u524d\u63d0\u4e0b\uff0c\u5145\u5206\u5229\u7528\u672c\u5730\u8ba1\u7b97\u8d44\u6e90\uff0c\u5b9e\u73b0\u66f4\u9ad8\u6548\u7684CPU\u5229\u7528\u7387\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>CPU\u4f18\u5316\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u4e0d\u65ad\u5730\u76d1\u63a7\u3001\u5206\u6790\u548c\u8c03\u6574\u3002\u5173\u952e\u5728\u4e8e\uff1a<\/p>\n<ul>\n<li><strong>\u6df1\u5165\u4e86\u89e3\u5e94\u7528\u7a0b\u5e8f\u7684\u884c\u4e3a\uff1a<\/strong> \u901a\u8fc7Profiling\u5de5\u5177\u627e\u5230\u771f\u6b63\u7684\u6027\u80fd\u74f6\u9888\u3002<\/li>\n<li><strong>\u9009\u62e9\u5408\u9002\u7684\u4f18\u5316\u7b56\u7565\uff1a<\/strong> \u9488\u5bf9\u4e0d\u540c\u7684\u74f6\u9888\uff0c\u91c7\u53d6\u4e0d\u540c\u7684\u4f18\u5316\u65b9\u6848\u3002<\/li>\n<li><strong>\u8c28\u614e\u8fdb\u884c\u5185\u6838\u8c03\u4f18\uff1a<\/strong> \u786e\u4fdd\u4fee\u6539\u540e\u7684\u914d\u7f6e\u4e0d\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u4e0d\u7a33\u5b9a\u3002<\/li>\n<li><strong>\u9009\u62e9\u5408\u9002\u7684\u4e91\u684c\u9762\u89e3\u51b3\u65b9\u6848\uff1a<\/strong> 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{"id":769,"date":"2025-12-29T14:40:15","date_gmt":"2025-12-29T06:40:15","guid":{"rendered":"https:\/\/newvhd.com\/769.html"},"modified":"2026-06-25T07:47:53","modified_gmt":"2026-06-24T23:47:53","slug":"linux%e6%9c%8d%e5%8a%a1%e5%99%a8cpu%e4%bc%98%e5%8c%96%ef%bc%9aprofiling%e4%b8%8e%e5%86%85%e6%a0%b8%e6%b7%b1%e5%ba%a6%e8%b0%83%e4%bc%98","status":"publish","type":"post","link":"https:\/\/newvhd.com\/769.html","title":{"rendered":"Linux\u670d\u52a1\u5668CPU\u4f18\u5316\uff1aProfiling\u4e0e\u5185\u6838\u6df1\u5ea6\u8c03\u4f18"},"content":{"rendered":"

\n
\n
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\/>\n<body><\/p>\n<h1>Linux\u670d\u52a1\u5668CPU\u4f18\u5316\uff1aProfiling\u4e0e\u5185\u6838\u6df1\u5ea6\u8c03\u4f18<\/h1>\n<p>CPU\u4f18\u5316\uff0c\u662f\u4efb\u4f55\u9ad8\u6027\u80fdLinux\u670d\u52a1\u5668\u8c03\u4f18\u7684\u6838\u5fc3\u73af\u8282\u3002\u65e0\u8bba\u662fWeb\u670d\u52a1\u5668\u3001\u6570\u636e\u5e93\u670d\u52a1\u5668\uff0c\u8fd8\u662f\u8ba1\u7b97\u5bc6\u96c6\u578b\u5e94\u7528\uff0cCPU\u74f6\u9888\u90fd\u53ef\u80fd\u5bfc\u81f4\u54cd\u5e94\u7f13\u6162\u3001\u6027\u80fd\u4e0b\u964d\u3002\u4f18\u5316\u4e0d\u4ec5\u4ec5\u662f\u5347\u7ea7\u786c\u4ef6\uff0c\u66f4\u91cd\u8981\u7684\u662f\u6df1\u5165\u4e86\u89e3\u5e94\u7528\u7a0b\u5e8f\u884c\u4e3a\uff0c\u7cbe\u51c6\u5b9a\u4f4d\u74f6\u9888\uff0c\u5e76\u901a\u8fc7\u8f6f\u4ef6\u5c42\u9762\u7684\u8c03\u6574\u6765\u63d0\u5347\u6548\u7387\u3002<\/p>\n<h2>\u6027\u80fd\u5256\u6790\uff08Profiling\uff09\u7684\u91cd\u8981\u6027<\/h2>\n<p>\u4f18\u5316\u5de5\u4f5c\u7684\u7b2c\u4e00\u6b65\uff0c\u4e5f\u662f\u6700\u5173\u952e\u7684\u4e00\u6b65\uff0c\u662f\u6027\u80fd\u5256\u6790\uff08Profiling\uff09\u3002\u76f2\u76ee\u731c\u6d4b\u6216\u57fa\u4e8e\u76f4\u89c9\u7684\u4f18\u5316\u5f80\u5f80\u6548\u7387\u4f4e\u4e0b\uff0c\u751a\u81f3\u9002\u5f97\u5176\u53cd\u3002Profiling\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u4e86\u89e3CPU\u7684\u8d44\u6e90\u6d88\u8017\u60c5\u51b5\uff0c\u627e\u5230\u771f\u6b63\u7684\u6027\u80fd\u74f6\u9888\u3002\u5e38\u7528\u7684\u5de5\u5177\u6709\u5f88\u591a\uff0c\u6bd4\u5982\uff1a<\/p>\n<ul>\n<li><code>perf<\/code>\uff1aLinux\u5185\u6838\u81ea\u5e26\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u529f\u80fd\u5f3a\u5927\uff0c\u80fd\u591f\u6df1\u5165\u5230\u5185\u6838\u5c42\u9762\uff0c\u4f46\u4f7f\u7528\u8d77\u6765\u76f8\u5bf9\u590d\u6742\u3002<\/li>\n<li><code>top<\/code>\/<code>htop<\/code>\uff1a\u7b80\u5355\u6613\u7528\uff0c\u53ef\u4ee5\u5b9e\u65f6\u76d1\u63a7CPU\u4f7f\u7528\u7387\u3001\u5185\u5b58\u5360\u7528\u7b49\u4fe1\u606f\uff0c\u5feb\u901f\u53d1\u73b0CPU\u5360\u7528\u7387\u9ad8\u7684\u8fdb\u7a0b\u3002<\/li>\n<li><code>gprof<\/code>\uff1a\u7528\u4e8eC\/C++\u7a0b\u5e8f\u7684Profiling\uff0c\u53ef\u4ee5\u5206\u6790\u51fd\u6570\u8c03\u7528\u5173\u7cfb\u548c\u6267\u884c\u65f6\u95f4\u3002<\/li>\n<li><code>\u706b\u7130\u56fe<\/code>\uff1a\u4e00\u79cd\u53ef\u89c6\u5316Profiling\u7ed3\u679c\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u76f4\u89c2\u5730\u5c55\u793aCPU\u7684\u8c03\u7528\u6808\uff0c\u5e2e\u52a9\u5feb\u901f\u5b9a\u4f4d\u70ed\u70b9\u51fd\u6570\u3002<\/li>\n<\/ul>\n<p>\u6211\u4e2a\u4eba\u7684\u7ecf\u9a8c\u662f\uff0c<code>perf<\/code>\u914d\u5408\u706b\u7130\u56fe\u5f80\u5f80\u80fd\u591f\u63d0\u4f9b\u6700\u6df1\u5165\u7684\u5206\u6790\u7ed3\u679c\u3002\u901a\u8fc7<code>perf record<\/code>\u8bb0\u5f55\u4e00\u6bb5\u65f6\u95f4\u5185\u7684CPU\u4e8b\u4ef6\uff0c\u7136\u540e\u4f7f\u7528\u706b\u7130\u56fe\u5de5\u5177\u751f\u6210\u53ef\u89c6\u5316\u62a5\u544a\uff0c\u53ef\u4ee5\u6e05\u6670\u5730\u770b\u5230\u54ea\u4e9b\u51fd\u6570\u6d88\u8017\u4e86\u6700\u591a\u7684CPU\u65f6\u95f4\u3002<\/p>\n<h2>\u5e38\u89c1\u7684CPU\u74f6\u9888\u53ca\u5176\u4f18\u5316\u7b56\u7565<\/h2>\n<p>\u627e\u5230\u4e86\u74f6\u9888\u4e4b\u540e\uff0c\u4e0b\u4e00\u6b65\u5c31\u662f\u5236\u5b9a\u4f18\u5316\u7b56\u7565\u3002\u5e38\u89c1\u7684CPU\u74f6\u9888\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8CPU\u5360\u7528\u7387\u7684\u8fdb\u7a0b\uff1a<\/strong> 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\u8fc7\u591a\u7684\u8fdb\u7a0b\/\u7ebf\u7a0b\u7ade\u4e89CPU\u8d44\u6e90\uff0c\u5bfc\u81f4\u9891\u7e41\u7684\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u6d88\u8017\u5927\u91cfCPU\u65f6\u95f4\u3002\u53ef\u4ee5\u8003\u8651\u51cf\u5c11\u8fdb\u7a0b\/\u7ebf\u7a0b\u6570\u91cf\u3001\u4f18\u5316\u540c\u6b65\u673a\u5236\uff08\u4f8b\u5982\u4f7f\u7528\u65e0\u9501\u6570\u636e\u7ed3\u6784\uff09\u3001\u8c03\u6574\u8fdb\u7a0b\/\u7ebf\u7a0b\u4f18\u5148\u7ea7\u7b49\u3002<\/li>\n<li><strong>\u5927\u91cf\u7684\u7cfb\u7edf\u8c03\u7528\uff1a<\/strong> \u7cfb\u7edf\u8c03\u7528\u9700\u8981\u4ece\u7528\u6237\u6001\u5207\u6362\u5230\u5185\u6838\u6001\uff0c\u5f00\u9500\u8f83\u5927\u3002\u5e94\u8be5\u5c3d\u91cf\u51cf\u5c11\u7cfb\u7edf\u8c03\u7528\u7684\u6b21\u6570\uff0c\u4f8b\u5982\u4f7f\u7528\u6279\u91cf\u64cd\u4f5c\u3001\u51cf\u5c11\u6587\u4ef6I\/O\u7b49\u3002<\/li>\n<li><strong>\u9501\u7ade\u4e89\uff1a<\/strong> \u591a\u7ebf\u7a0b\u7a0b\u5e8f\u4e2d\uff0c\u9501\u7ade\u4e89\u662f\u5e38\u89c1\u7684\u6027\u80fd\u74f6\u9888\u3002\u53ef\u4ee5\u4f7f\u7528\u66f4\u7ec6\u7c92\u5ea6\u7684\u9501\u3001\u65e0\u9501\u6570\u636e\u7ed3\u6784\u3001\u6216\u8005\u5176\u4ed6\u5e76\u53d1\u7f16\u7a0b\u6280\u672f\u6765\u51cf\u5c11\u9501\u7ade\u4e89\u3002<\/li>\n<li><strong>\u7f13\u5b58\u672a\u547d\u4e2d\uff1a<\/strong> CPU\u8bbf\u95ee\u5185\u5b58\u7684\u901f\u5ea6\u8fdc\u6162\u4e8e\u8bbf\u95ee\u7f13\u5b58\uff0c\u9891\u7e41\u7684\u7f13\u5b58\u672a\u547d\u4e2d\u4f1a\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316\u6570\u636e\u5e03\u5c40\u3001\u4f7f\u7528\u9884\u53d6\u6280\u672f\u3001\u6216\u8005\u8c03\u6574\u7f13\u5b58\u53c2\u6570\u6765\u63d0\u9ad8\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/li>\n<\/ul>\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6211\u66fe\u7ecf\u9047\u5230\u4e00\u4e2aWeb\u670d\u52a1\u5668CPU\u5360\u7528\u7387\u6301\u7eed\u504f\u9ad8\u7684\u95ee\u9898\u3002\u901a\u8fc7<code>perf<\/code>\u5206\u6790\u53d1\u73b0\uff0c\u5927\u90e8\u5206CPU\u65f6\u95f4\u90fd\u6d88\u8017\u5728\u5b57\u7b26\u4e32\u5904\u7406\u51fd\u6570\u4e0a\u3002\u540e\u6765\u53d1\u73b0\uff0c\u4ee3\u7801\u4e2d\u5b58\u5728\u5927\u91cf\u7684\u5b57\u7b26\u4e32\u62fc\u63a5\u64cd\u4f5c\uff0c\u6bcf\u6b21\u62fc\u63a5\u90fd\u4f1a\u521b\u5efa\u65b0\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\uff0c\u5bfc\u81f4\u9891\u7e41\u7684\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u3002\u4f18\u5316\u65b9\u6848\u5f88\u7b80\u5355\uff0c\u4f7f\u7528StringBuilder\u4ee3\u66ff\u5b57\u7b26\u4e32\u62fc\u63a5\uff0cCPU\u5360\u7528\u7387\u7acb\u523b\u964d\u4e86\u4e0b\u6765\u3002<\/p>\n<h2>\u5185\u6838\u6df1\u5ea6\u8c03\u4f18<\/h2>\n<p>\u9664\u4e86\u5e94\u7528\u7a0b\u5e8f\u5c42\u9762\u7684\u4f18\u5316\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5185\u6838\u8c03\u4f18\u6765\u63d0\u5347CPU\u6027\u80fd\u3002\u8fd9\u90e8\u5206\u9700\u8981\u8c28\u614e\u64cd\u4f5c\uff0c\u9519\u8bef\u7684\u914d\u7f6e\u53ef\u80fd\u5bfc\u81f4\u7cfb\u7edf\u4e0d\u7a33\u5b9a\u3002\u5e38\u89c1\u7684\u5185\u6838\u8c03\u4f18\u53c2\u6570\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>vm.swappiness<\/code>\uff1a\u63a7\u5236\u7cfb\u7edf\u4f7f\u7528Swap\u7684\u503e\u5411\u3002\u8f83\u9ad8\u7684\u503c\u610f\u5473\u7740\u66f4\u79ef\u6781\u5730\u4f7f\u7528Swap\uff0c\u53ef\u4ee5\u91ca\u653e\u5185\u5b58\uff0c\u4f46\u4f1a\u964d\u4f4e\u6027\u80fd\u3002\u8f83\u4f4e\u7684\u503c\u610f\u5473\u7740\u5c3d\u91cf\u907f\u514d\u4f7f\u7528Swap\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4OOM\uff08Out of Memory\uff09\u3002<\/li>\n<li><code>kernel.sched_latency_ns<\/code>\/<code>kernel.sched_wakeup_granularity_ns<\/code>\uff1a\u63a7\u5236\u8c03\u5ea6\u5668\u7684\u884c\u4e3a\u3002\u53ef\u4ee5\u8c03\u6574\u8fd9\u4e9b\u53c2\u6570\u6765\u4f18\u5316\u8fdb\u7a0b\/\u7ebf\u7a0b\u7684\u8c03\u5ea6\uff0c\u63d0\u9ad8\u54cd\u5e94\u901f\u5ea6\u3002<\/li>\n<li><code>\/proc\/sys\/kernel\/pid_max<\/code>\uff1a\u8bbe\u7f6e\u7cfb\u7edf\u5141\u8bb8\u7684\u6700\u5927PID\u6570\u91cf\u3002\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u589e\u52a0\u8fd9\u4e2a\u503c\u3002<\/li>\n<\/ul>\n<p>\u4fee\u6539\u5185\u6838\u53c2\u6570\u53ef\u4ee5\u4f7f\u7528<code>sysctl<\/code>\u547d\u4ee4\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>sysctl -w vm.swappiness=10\n<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4fee\u6539\u5185\u6838\u53c2\u6570\u540e\uff0c\u9700\u8981\u91cd\u542f\u7cfb\u7edf\u624d\u80fd\u751f\u6548\u3002\u5efa\u8bae\u5728\u4fee\u6539\u4e4b\u524d\u5907\u4efd\u914d\u7f6e\u6587\u4ef6\uff0c\u5e76\u4ed4\u7ec6\u6d4b\u8bd5\uff0c\u786e\u4fdd\u4fee\u6539\u540e\u7684\u914d\u7f6e\u4e0d\u4f1a\u5bfc\u81f4\u95ee\u9898\u3002<\/p>\n<h2>vDisk\u4e91\u684c\u9762\u4e0e\u672c\u5730\u8ba1\u7b97\u8d44\u6e90\u4f18\u5316<\/h2>\n<p>\u5728\u865a\u62df\u5316\u73af\u5883\u4e2d\uff0cCPU\u4f18\u5316\u540c\u6837\u91cd\u8981\u3002\u4f20\u7edf\u7684VDI\u67b6\u6784\uff0c\u6240\u6709\u8ba1\u7b97\u90fd\u5728\u670d\u52a1\u5668\u7aef\u8fdb\u884c\uff0c\u5bf9\u670d\u52a1\u5668CPU\u8d44\u6e90\u8981\u6c42\u6781\u9ad8\u3002\u800c<strong>vDisk\u4e91\u684c\u9762<\/strong>\uff0c\u662f\u4e00\u79cd\u57fa\u4e8e\u672c\u5730\u8ba1\u7b97\u8d44\u6e90\u7684\u4e91\u684c\u9762\u7cfb\u7edf\uff0c\u5b83\u5c06\u5927\u90e8\u5206\u8ba1\u7b97\u4efb\u52a1\u653e\u5728\u5ba2\u6237\u7aef\u8fdb\u884c\uff0c\u51cf\u8f7b\u4e86\u670d\u52a1\u5668\u7684CPU\u538b\u529b\uff0c\u80fd\u591f\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u66f4\u4f4e\u7684\u5ef6\u8fdf\u3002\u8fd9\u610f\u5473\u7740\uff0c\u7528\u6237\u5728\u4e91\u684c\u9762\u4e0a\u7684\u4f53\u9a8c\u66f4\u6d41\u7545\uff0c\u54cd\u5e94\u66f4\u5feb\u3002\u56e0\u6b64\uff0c\u5728\u9009\u62e9\u4e91\u684c\u9762\u89e3\u51b3\u65b9\u6848\u65f6\uff0cvDisk\u662f\u503c\u5f97\u8003\u8651\u7684\u9009\u9879\uff0c\u5b83\u80fd\u5728\u4fdd\u8bc1\u96c6\u4e2d\u7ba1\u7406\u7684\u524d\u63d0\u4e0b\uff0c\u5145\u5206\u5229\u7528\u672c\u5730\u8ba1\u7b97\u8d44\u6e90\uff0c\u5b9e\u73b0\u66f4\u9ad8\u6548\u7684CPU\u5229\u7528\u7387\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>CPU\u4f18\u5316\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u4e0d\u65ad\u5730\u76d1\u63a7\u3001\u5206\u6790\u548c\u8c03\u6574\u3002\u5173\u952e\u5728\u4e8e\uff1a<\/p>\n<ul>\n<li><strong>\u6df1\u5165\u4e86\u89e3\u5e94\u7528\u7a0b\u5e8f\u7684\u884c\u4e3a\uff1a<\/strong> \u901a\u8fc7Profiling\u5de5\u5177\u627e\u5230\u771f\u6b63\u7684\u6027\u80fd\u74f6\u9888\u3002<\/li>\n<li><strong>\u9009\u62e9\u5408\u9002\u7684\u4f18\u5316\u7b56\u7565\uff1a<\/strong> \u9488\u5bf9\u4e0d\u540c\u7684\u74f6\u9888\uff0c\u91c7\u53d6\u4e0d\u540c\u7684\u4f18\u5316\u65b9\u6848\u3002<\/li>\n<li><strong>\u8c28\u614e\u8fdb\u884c\u5185\u6838\u8c03\u4f18\uff1a<\/strong> \u786e\u4fdd\u4fee\u6539\u540e\u7684\u914d\u7f6e\u4e0d\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u4e0d\u7a33\u5b9a\u3002<\/li>\n<li><strong>\u9009\u62e9\u5408\u9002\u7684\u4e91\u684c\u9762\u89e3\u51b3\u65b9\u6848\uff1a<\/strong> \u50cfvDisk\u8fd9\u6837\u57fa\u4e8e\u672c\u5730\u8ba1\u7b97\u8d44\u6e90\u7684\u65b9\u6848\uff0c\u53ef\u4ee5\u6709\u6548\u51cf\u8f7b\u670d\u52a1\u5668CPU\u538b\u529b\uff0c\u63d0\u9ad8\u6574\u4f53\u6027\u80fd\u3002<\/li>\n<\/ul>\n<p>\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u591f\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3Linux\u670d\u52a1\u5668CPU\u4f18\u5316\uff0c\u5e76\u80fd\u591f\u5e94\u7528\u5230\u5b9e\u9645\u5de5\u4f5c\u4e2d\u3002\u8bb0\u4f4f\uff0c\u6ca1\u6709\u4e00\u52b3\u6c38\u9038\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u53ea\u6709\u4e0d\u65ad\u5b66\u4e60\u548c\u5b9e\u8df5\uff0c\u624d\u80fd\u6210\u4e3a\u771f\u6b63\u7684\u6027\u80fd\u4f18\u5316\u4e13\u5bb6\u3002<\/p>\n<p><\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux\u670d\u52a1\u5668CPU\u4f18\u5316<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"yes","bid_full_summary":"","footnotes":""},"categories":[8],"tags":[],"class_list":["post-769","post","type-post","status-publish","format-standard","hentry","category-vdiskjishuwendang"],"_links":{"self":[{"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/posts\/769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/comments?post=769"}],"version-history":[{"count":1,"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/posts\/769\/revisions"}],"predecessor-version":[{"id":5238,"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/posts\/769\/revisions\/5238"}],"wp:attachment":[{"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/media?parent=769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/categories?post=769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/newvhd.com\/wp-json\/wp\/v2\/tags?post=769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}