{"id":198688,"date":"2024-11-14T22:08:51","date_gmt":"2024-11-14T14:08:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/198688\/"},"modified":"2024-11-14T22:08:52","modified_gmt":"2024-11-14T14:08:52","slug":"cpu%e8%aa%bf%e5%84%aa%ef%bc%9a%e4%bd%bf%e7%94%a8linux%e7%8e%a9%e8%bd%89%e4%bc%ba%e6%9c%8d%e5%99%a8-cpu%e4%bd%bf%e7%94%a8linux","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/198688\/","title":{"rendered":"CPU\u8abf\u512a\uff1a\u4f7f\u7528Linux\u73a9\u8f49\u4f3a\u670d\u5668 (cpu\u4f7f\u7528linux)"},"content":{"rendered":"<h1 id=\"cpu%e8%aa%bf%e5%84%aa%ef%bc%9a%e4%bd%bf%e7%94%a8linux%e7%8e%a9%e8%bd%89%e4%bc%ba%e6%9c%8d%e5%99%a8-FXfmzRnDvP\">CPU\u8abf\u512a\uff1a\u4f7f\u7528Linux\u73a9\u8f49\u4f3a\u670d\u5668<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u4f4d\u6642\u4ee3\uff0c\u4f3a\u670d\u5668\u7684\u6027\u80fd\u5c0d\u65bc\u4f01\u696d\u548c\u958b\u767c\u8005\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528Linux\u7cfb\u7d71\u7684\u4f3a\u670d\u5668\u4e0a\uff0cCPU\u7684\u8abf\u512a\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u7cfb\u7d71\u7684\u6574\u9ad4\u6548\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Linux\u74b0\u5883\u4e2d\u9032\u884cCPU\u8abf\u512a\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u7ba1\u7406\u4f3a\u670d\u5668\u8cc7\u6e90\u3002<\/p>\n<h2 id=\"%e4%ba%86%e8%a7%a3cpu%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-FXfmzRnDvP\">\u4e86\u89e3CPU\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>CPU\uff08\u4e2d\u592e\u8655\u7406\u5668\uff09\u662f\u8a08\u7b97\u6a5f\u7684\u6838\u5fc3\u7d44\u4ef6\uff0c\u8ca0\u8cac\u57f7\u884c\u6307\u4ee4\u548c\u8655\u7406\u6578\u64da\u3002\u5728\u4f3a\u670d\u5668\u4e2d\uff0cCPU\u7684\u6027\u80fd\u76f4\u63a5\u5f71\u97ff\u5230\u61c9\u7528\u7a0b\u5e8f\u7684\u904b\u884c\u901f\u5ea6\u548c\u7cfb\u7d71\u7684\u97ff\u61c9\u6642\u9593\u3002\u4e86\u89e3CPU\u7684\u5de5\u4f5c\u539f\u7406\u548c\u6027\u80fd\u6307\u6a19\uff08\u5982\u6642\u9418\u983b\u7387\u3001\u6838\u5fc3\u6578\u91cf\u548c\u57f7\u884c\u7dd2\u6578\u91cf\uff09\u662f\u9032\u884c\u8abf\u512a\u7684\u7b2c\u4e00\u6b65\u3002<\/p>\n<h2 id=\"%e7%9b%a3%e6%8e%a7cpu%e4%bd%bf%e7%94%a8%e6%83%85%e6%b3%81-FXfmzRnDvP\">\u76e3\u63a7CPU\u4f7f\u7528\u60c5\u6cc1<\/h2>\n<p>\u5728\u9032\u884c\u4efb\u4f55\u8abf\u512a\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u76e3\u63a7CPU\u7684\u4f7f\u7528\u60c5\u6cc1\u3002Linux\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u4f86\u5e6b\u52a9\u7528\u6236\u4e86\u89e3CPU\u7684\u8ca0\u8f09\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><code>top<\/code>\uff1a\u5be6\u6642\u986f\u793a\u7cfb\u7d71\u7684\u904b\u884c\u72c0\u614b\uff0c\u5305\u62ecCPU\u4f7f\u7528\u7387\u3002<\/li>\n<li><code>htop<\/code>\uff1a\u6bd4<code>top<\/code>\u66f4\u53cb\u597d\u7684\u754c\u9762\uff0c\u63d0\u4f9b\u66f4\u591a\u7684\u8996\u89ba\u5316\u4fe1\u606f\u3002<\/li>\n<li><code>mpstat<\/code>\uff1a\u986f\u793a\u5404\u500bCPU\u6838\u5fc3\u7684\u4f7f\u7528\u60c5\u6cc1\u3002<\/li>\n<li><code>vmstat<\/code>\uff1a\u63d0\u4f9b\u6709\u95dc\u7cfb\u7d71\u865b\u64ec\u5167\u5b58\u3001\u9032\u7a0b\u3001CPU\u6d3b\u52d5\u7684\u7d9c\u5408\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<p>\u901a\u904e\u9019\u4e9b\u5de5\u5177\uff0c\u7528\u6236\u53ef\u4ee5\u7372\u5f97\u6709\u95dcCPU\u8ca0\u8f09\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5f9e\u800c\u78ba\u5b9a\u662f\u5426\u9700\u8981\u9032\u884c\u8abf\u512a\u3002<\/p>\n<h2 id=\"cpu%e8%aa%bf%e5%84%aa%e7%9a%84%e7%ad%96%e7%95%a5-FXfmzRnDvP\">CPU\u8abf\u512a\u7684\u7b56\u7565<\/h2>\n<p>\u5728\u4e86\u89e3\u4e86CPU\u7684\u4f7f\u7528\u60c5\u6cc1\u5f8c\uff0c\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\u4f86\u9032\u884c\u8abf\u512a\uff1a<\/p>\n<h3 id=\"1-%e8%aa%bf%e6%95%b4%e9%80%b2%e7%a8%8b%e5%84%aa%e5%85%88%e7%b4%9a-FXfmzRnDvP\">1. \u8abf\u6574\u9032\u7a0b\u512a\u5148\u7d1a<\/h3>\n<p>Linux\u5141\u8a31\u7528\u6236\u8abf\u6574\u9032\u7a0b\u7684\u512a\u5148\u7d1a\uff0c\u9019\u53ef\u4ee5\u901a\u904e<code>nice<\/code>\u548c<code>renice<\/code>\u547d\u4ee4\u4f86\u5be6\u73fe\u3002\u63d0\u9ad8\u67d0\u500b\u9032\u7a0b\u7684\u512a\u5148\u7d1a\u53ef\u4ee5\u4f7f\u5176\u7372\u5f97\u66f4\u591a\u7684CPU\u8cc7\u6e90\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>nice -n -10 .\/your_program<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u4ee5\u66f4\u9ad8\u7684\u512a\u5148\u7d1a\u904b\u884c<code>your_program<\/code>\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8cpu%e8%a6%aa%e5%92%8c%e6%80%a7-FXfmzRnDvP\">2. \u4f7f\u7528CPU\u89aa\u548c\u6027<\/h3>\n<p>CPU\u89aa\u548c\u6027\u5141\u8a31\u7528\u6236\u5c07\u7279\u5b9a\u9032\u7a0b\u7d81\u5b9a\u5230\u7279\u5b9a\u7684CPU\u6838\u5fc3\u4e0a\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u4e0a\u4e0b\u6587\u5207\u63db\u7684\u958b\u92b7\u3002\u53ef\u4ee5\u4f7f\u7528<code>taskset<\/code>\u547d\u4ee4\u4f86\u8a2d\u7f6e\u9032\u7a0b\u7684CPU\u89aa\u548c\u6027\uff1a<\/p>\n<pre><code>taskset -c 0,1 .\/your_program<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07<code>your_program<\/code>\u7d81\u5b9a\u5230CPU\u6838\u5fc30\u548c1\u4e0a\u904b\u884c\u3002<\/p>\n<h3 id=\"3-%e8%aa%bf%e6%95%b4%e5%85%a7%e6%a0%b8%e5%8f%83%e6%95%b8-FXfmzRnDvP\">3. \u8abf\u6574\u5167\u6838\u53c3\u6578<\/h3>\n<p>Linux\u5167\u6838\u63d0\u4f9b\u4e86\u591a\u7a2e\u53c3\u6578\u53ef\u4ee5\u8abf\u6574CPU\u7684\u884c\u70ba\uff0c\u4f8b\u5982\u8abf\u6574<code>\/proc\/sys\/kernel\/sched_rt_runtime_us<\/code>\u4f86\u6539\u8b8a\u5be6\u6642\u9032\u7a0b\u7684\u904b\u884c\u6642\u9593\u3002\u9019\u4e9b\u53c3\u6578\u53ef\u4ee5\u901a\u904e<code>sysctl<\/code>\u547d\u4ee4\u9032\u884c\u8abf\u6574\uff1a<\/p>\n<pre><code>sysctl -w kernel.sched_rt_runtime_us=-1<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u7981\u7528\u5be6\u6642\u9032\u7a0b\u7684\u6642\u9593\u9650\u5236\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e6%80%a7%e8%83%bd%e5%88%86%e6%9e%90%e5%b7%a5%e5%85%b7-FXfmzRnDvP\">4. \u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177<\/h3>\n<p>\u6027\u80fd\u5206\u6790\u5de5\u5177\u5982<code>perf<\/code>\u548c<code>gprof<\/code>\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u8b58\u5225\u6027\u80fd\u74f6\u9838\uff0c\u5f9e\u800c\u9032\u884c\u91dd\u5c0d\u6027\u7684\u8abf\u512a\u3002\u9019\u4e9b\u5de5\u5177\u80fd\u5920\u63d0\u4f9b\u8a73\u7d30\u7684\u6027\u80fd\u6578\u64da\uff0c\u5e6b\u52a9\u7528\u6236\u4e86\u89e3\u54ea\u4e9b\u90e8\u5206\u7684\u4ee3\u78bc\u6d88\u8017\u4e86\u904e\u591a\u7684CPU\u8cc7\u6e90\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-FXfmzRnDvP\">\u7d50\u8ad6<\/h2>\n<p>CPU\u8abf\u512a\u662f\u4e00\u500b\u6301\u7e8c\u7684\u904e\u7a0b\uff0c\u901a\u904e\u76e3\u63a7\u548c\u8abf\u6574\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u986f\u8457\u63d0\u5347Linux\u4f3a\u670d\u5668\u7684\u6027\u80fd\u3002\u7121\u8ad6\u662f\u8abf\u6574\u9032\u7a0b\u512a\u5148\u7d1a\u3001\u4f7f\u7528CPU\u89aa\u548c\u6027\uff0c\u9084\u662f\u8abf\u6574\u5167\u6838\u53c3\u6578\uff0c\u9019\u4e9b\u65b9\u6cd5\u90fd\u80fd\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u5229\u7528\u4f3a\u670d\u5668\u8cc7\u6e90\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9019\u4e9b\u8abf\u512a\u7b56\u7565\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u80fd\u7684\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u548c\u5feb\u901f\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728Linux\u74b0\u5883\u4e2d\u512a\u5316CPU\u6027\u80fd\uff0c\u63d0\u5347\u4f3a\u670d\u5668\u6548\u80fd\uff0c\u5be6\u73fe\u66f4\u9ad8\u6548\u7684\u8cc7\u6e90\u7ba1\u7406\u8207\u904b\u884c\u901f\u5ea6\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-198688","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/198688","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=198688"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/198688\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=198688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=198688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=198688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}