{"id":732,"date":"2021-12-10T00:34:52","date_gmt":"2021-12-09T16:34:52","guid":{"rendered":"https:\/\/blog.cauchyschwarz.com\/?p=732"},"modified":"2021-12-10T00:34:56","modified_gmt":"2021-12-09T16:34:56","slug":"cpu-speed-governer","status":"publish","type":"post","link":"https:\/\/blog.cauchyschwarz.com\/?p=732","title":{"rendered":"CPU Speed Governer"},"content":{"rendered":"\n<p>\u53ef\u4ee5\u8bfb\u4e0b<a href=\"https:\/\/access.redhat.com\/documentation\/en-us\/red_hat_enterprise_linux\/6\/html\/power_management_guide\/cpufreq_governors#governor_types\">\u7ea2\u5e3d\u7684\u8bf4\u660e\u6587\u6863<\/a>\u4ee5\u83b7\u53d6\u66f4\u5168\u9762\u548c\u51c6\u786e\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69e0e8baed145\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69e0e8baed145\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=732\/#CPUfreq\" >CPUfreq<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=732\/#CPU_speed_governer%E7%9A%84%E6%A6%82%E5%BF%B5\" >CPU speed governer\u7684\u6982\u5ff5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=732\/#CPU_speed_governor%E7%9A%84%E8%AE%BE%E7%BD%AE\" >CPU speed governor\u7684\u8bbe\u7f6e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=732\/#%E5%87%A0%E4%B8%AA%E6%9F%A5%E7%9C%8Bcpu%E4%BF%A1%E6%81%AF%E7%9A%84%E5%91%BD%E4%BB%A4\" >\u51e0\u4e2a\u67e5\u770bcpu\u4fe1\u606f\u7684\u547d\u4ee4<\/a><\/li><\/ul><\/nav><\/div>\n<h1 class=\"wp-block-heading\" id=\"cpufreq\"><span class=\"ez-toc-section\" id=\"CPUfreq\"><\/span>CPUfreq<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>CPU\u7684\u8fd0\u884c\u9891\u7387\u662f\u53ef\u4ee5\u8c03\u8282\u7684\uff0c\u5728\u5de5\u4f5c\u8d1f\u8f7d\u4f4e\u7684\u65f6\u5019\u53ef\u4ee5\u901a\u8fc7\u964d\u4f4eCPU\u8fd0\u884c\u9891\u7387\uff0c\u8fbe\u5230\u8282\u80fd\u3001\u51cf\u5c11CPU\u53d1\u70ed\u7684\u76ee\u7684\u3002CPUfreq\u5927\u6982\u5c31\u662f\u7528\u6765\u8bbe\u7f6eCPU\u8fd0\u884c\u9891\u7387\u7684?<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"cpu-speed-governer%E7%9A%84%E6%A6%82%E5%BF%B5\"><span class=\"ez-toc-section\" id=\"CPU_speed_governer%E7%9A%84%E6%A6%82%E5%BF%B5\"><\/span>CPU speed governer\u7684\u6982\u5ff5<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>CPU speed governer\u5c31\u662f\u7528\u6765\u8bbe\u5b9aCPU\u5e94\u8be5\u5982\u4f55\u52a8\u6001\u8c03\u6574\u8fd0\u884c\u9891\u7387\u3002CPU speed governer\u6709\u4ee5\u4e0b\u53ef\u9009\u7c7b\u578b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>powersave<br>\u5f3a\u5236CPU\u4ee5\u6700\u4f4e\u9891\u7387\u8fd0\u884c\uff0c\u8be5\u6700\u4f4e\u9891\u7387\u662f\u9759\u6001\u503c\uff0c\u4e00\u7ecf\u8bbe\u5b9a\u4e0d\u518d\u6539\u53d8\u3002\u8be5\u7b56\u7565\u6700\u7701\u7535\uff0c\u4f46\u662f\u5728cpu\u8d1f\u8f7d\u9ad8\u7684\u65f6\u5019\uff0c\u5176\u8017\u7535\u5374\u53ef\u80fd\u53cd\u800c\u9ad8\u4e8e\u8ba9CPU\u4ee5\u66f4\u9ad8\u9891\u7387\u8fd0\u884c\u3002<\/li><li>performance<br>\u603b\u662f\u8ba9CPU\u4ee5\u6700\u9ad8\u9891\u7387\u8fd0\u884c\uff0c\u8be5\u6700\u9ad8\u9891\u7387\u662f\u9759\u6001\u503c\uff0c\u4e00\u7ecf\u8bbe\u5b9a\u4e0d\u518d\u6539\u53d8\u3002<\/li><li>ondemand<br>\u6839\u636e\u7cfb\u7edf\u8d1f\u8f7d\u8ba9CPU\u8fd0\u884c\u9891\u7387\u5728<strong>\u6700\u9ad8\u548c\u6700\u4f4e\u4e24\u4e2a\u9891\u7387<\/strong>\u4e4b\u95f4\u5207\u6362(\u8981\u4e48\u9009\u6700\u9ad8\uff0c\u8981\u4e48\u9009\u6700\u4f4e)\u3002\u7f3a\u70b9\u662f\u8fd9\u4e2a\u9891\u7387\u5207\u6362\u4f1a\u6709\u6ede\u540e\u6027(latency)\u3002<\/li><li>userspace \u5141\u8bb8\u7528\u6237\u7a0b\u5e8f\u6765\u8bbe\u7f6eCPU\u8fd0\u884c\u9891\u7387\u3002<\/li><li>conservative \u7c7b\u4f3condemand\uff0c\u4f46\u662f\u66f4\u5e73\u6ed1\uff0c\u6839\u636e\u7cfb\u7edf\u8d1f\u8f7d\u9009\u62e9\u7cfb\u7edf\u9700\u8981\u7684CPU\u8fd0\u884c\u9891\u7387\uff0c\u4e0d\u50cfondemand\u53ea\u6709\u4e24\u4e2a\u9009\u62e9\uff0c\u7f3a\u70b9\u662f\u5176\u6ede\u540e\u6027\u6bd4ondemand\u66f4\u4e25\u91cd\u3002<\/li><\/ol>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"cpu-speed-governor%E7%9A%84%E8%AE%BE%E7%BD%AE\"><span class=\"ez-toc-section\" id=\"CPU_speed_governor%E7%9A%84%E8%AE%BE%E7%BD%AE\"><\/span>CPU speed governor\u7684\u8bbe\u7f6e<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>\u5b89\u88c5CPUfreq\u9a71\u52a8\uff0cUbuntu\u8c8c\u4f3c\u9ed8\u8ba4\u5e26\u4e86\u8fd9\u4e2a\uff0c\u4e0d\u9700\u8981\u88c5\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">ls \/lib\/modules\/[kernel version]\/kernel\/arch\/[architecture]\/kernel\/cpu\/cpufreq\/\n<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u9700\u8981\u5b89\u88c5\u4e14\u540c\u65f6\u6709acpi-cpufreq\u548cp4-clockmod\u4e24\u79cd\u9a71\u52a8\uff0c\u4f18\u5148\u5b89\u88c5acpi-cpufreq\uff0c\u56e0\u4e3ap4-clockmod\u53ea\u4f1a\u964d\u9891\uff0c\u4e0d\u80fd\u964d\u7535\u538b\u3002<\/p>\n\n\n\n<p>\u67e5\u770b\u5f53\u524d\u7684governor\u7c7b\u578b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">cpupower frequency-info\n<\/code><\/pre>\n\n\n\n<p>\u67e5\u770b\u53ef\u7528\u7684governor\u7c7b\u578b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">cpupower frequency-info --governors\n<\/code><\/pre>\n\n\n\n<p>\u53ef\u80fd\u7cfb\u7edf\u6ca1\u6709\u63d0\u4f9b\u60f3\u8981\u7684governor\u7c7b\u578b\uff0c\u6b64\u65f6\u9700\u8981\u5b89\u88c5\u5185\u6838\u6a21\u5757\u6dfb\u52a0\u9700\u8981\u7684governor\u7c7b\u578b\u3002\u5185\u6db5\u6a21\u5757\u4f4d\u4e8e\/lib\/modules\/[kernel version]\/kernel\/drivers\/cpufreq\/\u3002<\/p>\n\n\n\n<p>\u8bbe\u7f6egovernor\u7c7b\u578b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">cpupower frequency-set --governor [governor]\n<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u7528\u4e0d\u4e86cpupower\u547d\u4ee4\uff0c\u90a3\u4e48\u53ef\u4ee5\u901a\u8fc7\u8bfb\u5199\/sys\/devices\/system\/cpu\/[cpuid]\/cpufreq\/\u91cc\u7684\u6587\u4ef6\u6765\u83b7\u53d6\u76f8\u5173\u4fe1\u606f\u548c\u4fee\u6539\u76f8\u5173\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"%E5%87%A0%E4%B8%AA%E6%9F%A5%E7%9C%8Bcpu%E4%BF%A1%E6%81%AF%E7%9A%84%E5%91%BD%E4%BB%A4\"><span class=\"ez-toc-section\" id=\"%E5%87%A0%E4%B8%AA%E6%9F%A5%E7%9C%8Bcpu%E4%BF%A1%E6%81%AF%E7%9A%84%E5%91%BD%E4%BB%A4\"><\/span>\u51e0\u4e2a\u67e5\u770bcpu\u4fe1\u606f\u7684\u547d\u4ee4<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><code>cat \/proc\/cpuinfo<\/code><br><code>lscpu<\/code><br><code>lstopo<\/code><br><code>i7z<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53ef\u4ee5\u8bfb\u4e0b\u7ea2\u5e3d\u7684\u8bf4\u660e\u6587\u6863\u4ee5\u83b7\u53d6\u66f4\u5168\u9762\u548c\u51c6\u786e\u7684\u4fe1\u606f\u3002 CPUfreq CPU\u7684\u8fd0\u884c\u9891\u7387\u662f\u53ef\u4ee5\u8c03\u8282\u7684\uff0c\u5728\u5de5\u4f5c\u8d1f\u8f7d\u4f4e\u7684\u65f6\u5019\u53ef\u4ee5\u901a\u8fc7\u964d\u4f4eCPU\u8fd0\u884c\u9891\u7387\uff0c\u8fbe\u5230\u8282\u80fd\u3001\u51cf\u5c11CPU\u53d1\u70ed\u7684\u76ee\u7684\u3002CPUfreq\u5927\u6982\u5c31\u662f\u7528\u6765&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[74,75],"class_list":["post-732","post","type-post","status-publish","format-standard","hentry","category-10","tag-cpu","tag-hardware"],"_links":{"self":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/732","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=732"}],"version-history":[{"count":1,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/732\/revisions"}],"predecessor-version":[{"id":733,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/732\/revisions\/733"}],"wp:attachment":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}