{"id":19272,"date":"2024-08-10T08:48:53","date_gmt":"2024-08-10T00:48:53","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/how-to-limit-cpu-frequency-in-centos\/"},"modified":"2025-04-03T11:52:23","modified_gmt":"2025-04-03T03:52:23","slug":"how-to-limit-cpu-frequency-in-centos","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/blog\/how-to-limit-cpu-frequency-in-centos\/","title":{"rendered":"\u5982\u4f55\u5728CentOS\u4e2d\u9650\u5236CPU\u9891\u7387?"},"content":{"rendered":"<h2><strong>\u7406\u89e3CPU\u9891\u7387\u7ba1\u7406<\/strong><\/h2>\n<p>\u5728CentOS\u670d\u52a1\u5668\u4e2d\u7ba1\u7406CPU\u9891\u7387\u5bf9\u4e8e\u4f18\u5316\u6027\u80fd\u548c\u964d\u4f4e\u529f\u8017\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u3002\u65e0\u8bba\u60a8\u662f\u8fd0\u884c\u9ad8\u6027\u80fd\u7684<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/cn2\/\" target=\"_blank\">\u670d\u52a1\u5668\u79df\u7528<\/a>\u73af\u5883\u8fd8\u662f\u7ba1\u7406\u670d\u52a1\u5668\u6258\u7ba1\u670d\u52a1\uff0c\u5408\u9002\u7684CPU\u9891\u7387\u63a7\u5236\u90fd\u80fd\u663e\u8457\u5f71\u54cd\u670d\u52a1\u5668\u7684\u6548\u7387\u3002\u672c\u6307\u5357\u6df1\u5165\u63a2\u8ba8\u4e86\u5728CentOS\u7cfb\u7edf\u4e2d\u9650\u5236CPU\u9891\u7387\u7684\u5b9e\u7528\u65b9\u6cd5\u3002<\/p>\n<h2><strong>\u524d\u63d0\u6761\u4ef6\u548c\u7cfb\u7edf\u8981\u6c42<\/strong><\/h2>\n<p>\u5728\u5f00\u59cb\u8c03\u6574CPU\u9891\u7387\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u60a8\u7684\u7cfb\u7edf\u6ee1\u8db3\u4ee5\u4e0b\u8981\u6c42\uff1a<\/p>\n<ul>\n<li>CentOS\u670d\u52a1\u5668\u7684root\u8bbf\u95ee\u6743\u9650<\/li>\n<li>CentOS 7\u6216\u66f4\u9ad8\u7248\u672c<\/li>\n<li>\u652f\u6301\u9891\u7387\u8c03\u8282\u7684CPU<\/li>\n<li>\u5df2\u5b89\u88c5\u6240\u9700\u8f6f\u4ef6\u5305<\/li>\n<\/ul>\n<p>\u9996\u5148\uff0c\u9a8c\u8bc1\u60a8\u7684CPU\u662f\u5426\u652f\u6301\u9891\u7387\u8c03\u8282\uff1a<\/p>\n<pre><code>cat \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_available_frequencies<\/code><\/pre>\n<p>\u5b89\u88c5\u5fc5\u8981\u5de5\u5177\uff1a<\/p>\n<pre><code>yum install cpufrequtils kernel-tools<\/code><\/pre>\n<h2><strong>CPU\u9891\u7387\u8c03\u8282\u65b9\u6cd5<\/strong><\/h2>\n<p>Linux\u5185\u6838\u63d0\u4f9b\u4e86\u591a\u79cdCPU\u9891\u7387\u63a7\u5236\u65b9\u6cd5\u3002\u6700\u6709\u6548\u7684\u65b9\u6cd5\u662f\u4f7f\u7528CPUfreq\u5b50\u7cfb\u7edf\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u8c03\u901f\u5668\u6765\u52a8\u6001\u7ba1\u7406CPU\u901f\u5ea6\u3002<\/p>\n<h3>\u53ef\u7528\u7684CPU\u8c03\u901f\u5668<\/h3>\n<p>\u6bcf\u4e2a\u8c03\u901f\u5668\u90fd\u5b9e\u73b0\u4e86\u72ec\u7279\u7684\u9891\u7387\u7ba1\u7406\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>performance\uff1a\u7ef4\u6301\u6700\u9ad8\u9891\u7387<\/li>\n<li>powersave\uff1a\u4ee5\u6700\u4f4e\u9891\u7387\u8fd0\u884c<\/li>\n<li>ondemand\uff1a\u6839\u636e\u7cfb\u7edf\u8d1f\u8f7d\u8c03\u8282<\/li>\n<li>conservative\uff1a\u9010\u6b65\u8c03\u8282\u9891\u7387<\/li>\n<li>userspace\uff1a\u5141\u8bb8\u624b\u52a8\u8bbe\u7f6e\u9891\u7387<\/li>\n<\/ul>\n<h2><strong>\u5b9e\u65bdCPU\u9891\u7387\u9650\u5236<\/strong><\/h2>\n<p>\u8ba9\u6211\u4eec\u63a2\u8ba8\u5b9e\u65bdCPU\u9891\u7387\u9650\u5236\u7684\u5177\u4f53\u6b65\u9aa4\u3002\u9996\u5148\u68c0\u67e5\u5f53\u524d\u8bbe\u7f6e\uff1a<\/p>\n<pre><code># \u67e5\u770b\u5f53\u524dCPU\u9891\u7387\r\ncpufreq-info\r\n\r\n# \u68c0\u67e5\u53ef\u7528\u7684\u8c03\u901f\u5668\r\ncat \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_available_governors\r\n\r\n# \u67e5\u770b\u5f53\u524d\u8c03\u901f\u5668\r\ncat \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_governor<\/code><\/pre>\n<h3>\u8bbe\u7f6e\u6700\u5927\u9891\u7387<\/h3>\n<p>\u8981\u9650\u5236CPU\u9891\u7387\uff0c\u4fee\u6539\u6700\u5927\u9891\u7387\u503c\uff1a<\/p>\n<pre><code># \u8bbe\u7f6e\u6700\u5927\u9891\u7387\uff08\u793a\u4f8b\uff1a2GHz\uff09\r\necho 2000000 > \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_max_freq\r\n\r\n# \u5e94\u7528\u5230\u6240\u6709CPU\u6838\u5fc3\r\nfor cpu in \/sys\/devices\/system\/cpu\/cpu[0-9]*; do\r\n    echo 2000000 > $cpu\/cpufreq\/scaling_max_freq\r\ndone<\/code><\/pre>\n<h2><strong>\u6301\u4e45\u5316\u914d\u7f6e<\/strong><\/h2>\n<p>\u901a\u8fc7\u4fee\u6539\u7cfb\u7edf\u8bbe\u7f6e\u521b\u5efa\u6c38\u4e45\u914d\u7f6e\uff1a<\/p>\n<pre><code># \u521b\u5efatuned\u914d\u7f6e\u6587\u4ef6\r\nmkdir -p \/etc\/tuned\/custom_profile\r\ncat << EOF > \/etc\/tuned\/custom_profile\/tuned.conf\r\n[main]\r\ninclude=balanced\r\n\r\n[cpu]\r\ngovernor=conservative\r\nenergy_perf_bias=power\r\nmin_perf_pct=0\r\nmax_perf_pct=80\r\nEOF\r\n\r\n# \u6fc0\u6d3b\u914d\u7f6e\u6587\u4ef6\r\ntuned-adm profile custom_profile<\/code><\/pre>\n<h2><strong>\u76d1\u63a7\u548c\u9a8c\u8bc1<\/strong><\/h2>\n<p>\u4f7f\u7528\u8fd9\u4e9b\u547d\u4ee4\u76d1\u63a7CPU\u9891\u7387\u53d8\u5316\uff1a<\/p>\n<pre><code># \u5b9e\u65f6\u76d1\u63a7\r\nwatch -n 1 \"grep \\\"cpu MHz\\\" \/proc\/cpuinfo\"\r\n\r\n# \u68c0\u67e5\u5f53\u524d\u8bbe\u7f6e\r\nfor cpu in \/sys\/devices\/system\/cpu\/cpu[0-9]*; do\r\n    echo -n \"CPU ${cpu##*\/}: \"\r\n    cat $cpu\/cpufreq\/scaling_cur_freq\r\ndone<\/code><\/pre>\n<h2><strong>\u6027\u80fd\u4f18\u5316\u5efa\u8bae<\/strong><\/h2>\n<p>\u867d\u7136\u9650\u5236CPU\u9891\u7387\u6709\u52a9\u4e8e\u964d\u4f4e\u529f\u8017\uff0c\u4f46\u5e73\u8861\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u5b9e\u7528\u7684\u4f18\u5316\u65b9\u6cd5\uff1a<\/p>\n<h3>\u57fa\u4e8e\u5de5\u4f5c\u8d1f\u8f7d\u7684\u8c03\u4f18<\/h3>\n<table style=\"border-collapse: collapse; border: 1px solid black;\">\n<tr>\n<th style=\"border: 1px solid black; padding: 8px;\">\u5de5\u4f5c\u8d1f\u8f7d\u7c7b\u578b<\/th>\n<th style=\"border: 1px solid black; padding: 8px;\">\u63a8\u8350\u8c03\u901f\u5668<\/th>\n<th style=\"border: 1px solid black; padding: 8px;\">\u9891\u7387\u8303\u56f4<\/th>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid black; padding: 8px;\">Web\u670d\u52a1\u5668<\/td>\n<td style=\"border: 1px solid black; padding: 8px;\">ondemand<\/td>\n<td style=\"border: 1px solid black; padding: 8px;\">1.6GHz &#8211; 2.4GHz<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid black; padding: 8px;\">\u6570\u636e\u5e93\u670d\u52a1\u5668<\/td>\n<td style=\"border: 1px solid black; padding: 8px;\">performance<\/td>\n<td style=\"border: 1px solid black; padding: 8px;\">2.0GHz &#8211; \u6700\u5927<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid black; padding: 8px;\">\u6587\u4ef6\u670d\u52a1\u5668<\/td>\n<td style=\"border: 1px solid black; padding: 8px;\">conservative<\/td>\n<td style=\"border: 1px solid black; padding: 8px;\">1.2GHz &#8211; 2.0GHz<\/td>\n<\/tr>\n<\/table>\n<h2><strong>\u5e38\u89c1\u95ee\u9898\u6392\u9664<\/strong><\/h2>\n<p>\u89e3\u51b3\u7ba1\u7406CPU\u9891\u7387\u65f6\u7684\u5e38\u89c1\u95ee\u9898\uff1a<\/p>\n<h3>\u9891\u7387\u8c03\u8282\u4e0d\u5de5\u4f5c<\/h3>\n<pre><code># \u68c0\u67e5BIOS\u4e2d\u662f\u5426\u542f\u7528\u4e86\u9891\u7387\u8c03\u8282\r\ndmesg | grep -i \"cpu frequency\"\r\n\r\n# \u9a8c\u8bc1\u5185\u6838\u6a21\u5757\r\nlsmod | grep acpi_cpufreq\r\n\r\n# \u5982\u6709\u5fc5\u8981\u52a0\u8f7d\u6a21\u5757\r\nmodprobe acpi_cpufreq<\/code><\/pre>\n<h3>\u6027\u80fd\u76d1\u63a7\u811a\u672c<\/h3>\n<pre><code>#!\/bin\/bash\r\nwhile true; do\r\n    echo \"\u5f53\u524dCPU\u9891\u7387\uff1a\"\r\n    for cpu in \/sys\/devices\/system\/cpu\/cpu[0-9]*; do\r\n        cur_freq=$(cat $cpu\/cpufreq\/scaling_cur_freq)\r\n        max_freq=$(cat $cpu\/cpufreq\/scaling_max_freq)\r\n        echo \"${cpu##*\/}: ${cur_freq}MHz \/ ${max_freq}MHz\"\r\n    done\r\n    sleep 5\r\n    clear\r\ndone<\/code><\/pre>\n<h2><strong>\u6700\u4f73\u5b9e\u8df5\u548c\u5efa\u8bae<\/strong><\/h2>\n<p>\u9075\u5faa\u4ee5\u4e0b\u51c6\u5219\u5b9e\u73b0\u6700\u4f73\u7684CPU\u9891\u7387\u7ba1\u7406\uff1a<\/p>\n<ul>\n<li>\u5b9a\u671f\u76d1\u63a7\u6e29\u5ea6\u548c\u6027\u80fd\u6307\u6807<\/li>\n<li>\u6839\u636e\u5b9e\u9645\u5de5\u4f5c\u8d1f\u8f7d\u6a21\u5f0f\u8c03\u6574\u9891\u7387\u9650\u5236<\/li>\n<li>\u8bb0\u5f55\u6240\u6709\u914d\u7f6e\u66f4\u6539<\/li>\n<li>\u9996\u5148\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\u6d4b\u8bd5\u66f4\u6539<\/li>\n<\/ul>\n<h2><strong>\u7ed3\u8bba<\/strong><\/h2>\n<p>\u5728CentOS\u4e2d\u8fdb\u884c\u6709\u6548\u7684CPU\u9891\u7387\u7ba1\u7406\u9700\u8981\u540c\u65f6\u7406\u89e3\u786c\u4ef6\u80fd\u529b\u548c\u8f6f\u4ef6\u914d\u7f6e\u3002\u65e0\u8bba\u662f\u7ba1\u7406\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u8fd8\u662f\u4f18\u5316\u670d\u52a1\u5668\u6258\u7ba1\u670d\u52a1\uff0c\u8fd9\u4e9b\u6280\u672f\u90fd\u6709\u52a9\u4e8e\u5728\u6027\u80fd\u548c\u529f\u8017\u4e4b\u95f4\u53d6\u5f97\u9002\u5f53\u7684\u5e73\u8861\u3002\u8bb0\u4f4f\u5728\u5b9e\u65bd\u9891\u7387\u9650\u5236\u540e\u76d1\u63a7\u7cfb\u7edf\u884c\u4e3a\uff0c\u5e76\u6839\u636e\u5b9e\u9645\u6027\u80fd\u9700\u6c42\u8c03\u6574\u8bbe\u7f6e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7406\u89e3CPU\u9891\u7387\u7ba1\u7406 \u5728CentOS\u670d\u52a1\u5668\u4e2d\u7ba1\u7406CPU\u9891\u7387\u5bf9\u4e8e\u4f18\u5316\u6027\u80fd\u548c\u964d\u4f4e\u529f\u8017\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u3002\u65e0\u8bba\u60a8\u662f\u8fd0\u884c\u9ad8\u6027\u80fd\u7684\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u8fd8\u662f\u7ba1\u7406\u670d\u52a1\u5668\u6258\u7ba1\u670d\u52a1\uff0c\u5408\u9002\u7684CPU\u9891\u7387\u63a7\u5236\u90fd\u80fd\u663e\u8457\u5f71\u54cd\u670d\u52a1\u5668\u7684\u6548\u7387\u3002\u672c\u6307\u5357\u6df1\u5165\u63a2\u8ba8\u4e86\u5728CentOS\u7cfb\u7edf\u4e2d\u9650\u5236CPU\u9891\u7387\u7684\u5b9e\u7528\u65b9\u6cd5\u3002 \u524d\u63d0\u6761\u4ef6\u548c\u7cfb\u7edf\u8981\u6c42 \u5728\u5f00\u59cb\u8c03\u6574CPU\u9891\u7387\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u60a8\u7684\u7cfb\u7edf\u6ee1\u8db3\u4ee5\u4e0b\u8981\u6c42\uff1a CentOS\u670d\u52a1\u5668\u7684root\u8bbf\u95ee\u6743\u9650 CentOS 7\u6216\u66f4\u9ad8\u7248\u672c \u652f\u6301\u9891\u7387\u8c03\u8282\u7684CPU \u5df2\u5b89\u88c5\u6240\u9700\u8f6f\u4ef6\u5305 \u9996\u5148\uff0c\u9a8c\u8bc1\u60a8\u7684CPU\u662f\u5426\u652f\u6301\u9891\u7387\u8c03\u8282\uff1a cat \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_available_frequencies \u5b89\u88c5\u5fc5\u8981\u5de5\u5177\uff1a yum install cpufrequtils kernel-tools CPU\u9891\u7387\u8c03\u8282\u65b9\u6cd5 Linux\u5185\u6838\u63d0\u4f9b\u4e86\u591a\u79cdCPU\u9891\u7387\u63a7\u5236\u65b9\u6cd5\u3002\u6700\u6709\u6548\u7684\u65b9\u6cd5\u662f\u4f7f\u7528CPUfreq\u5b50\u7cfb\u7edf\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u8c03\u901f\u5668\u6765\u52a8\u6001\u7ba1\u7406CPU\u901f\u5ea6\u3002 \u53ef\u7528\u7684CPU\u8c03\u901f\u5668 \u6bcf\u4e2a\u8c03\u901f\u5668\u90fd\u5b9e\u73b0\u4e86\u72ec\u7279\u7684\u9891\u7387\u7ba1\u7406\u7b56\u7565\uff1a performance\uff1a\u7ef4\u6301\u6700\u9ad8\u9891\u7387 powersave\uff1a\u4ee5\u6700\u4f4e\u9891\u7387\u8fd0\u884c ondemand\uff1a\u6839\u636e\u7cfb\u7edf\u8d1f\u8f7d\u8c03\u8282 conservative\uff1a\u9010\u6b65\u8c03\u8282\u9891\u7387 userspace\uff1a\u5141\u8bb8\u624b\u52a8\u8bbe\u7f6e\u9891\u7387 \u5b9e\u65bdCPU\u9891\u7387\u9650\u5236 \u8ba9\u6211\u4eec\u63a2\u8ba8\u5b9e\u65bdCPU\u9891\u7387\u9650\u5236\u7684\u5177\u4f53\u6b65\u9aa4\u3002\u9996\u5148\u68c0\u67e5\u5f53\u524d\u8bbe\u7f6e\uff1a # \u67e5\u770b\u5f53\u524dCPU\u9891\u7387 cpufreq-info # \u68c0\u67e5\u53ef\u7528\u7684\u8c03\u901f\u5668 cat \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_available_governors # \u67e5\u770b\u5f53\u524d\u8c03\u901f\u5668 cat \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_governor \u8bbe\u7f6e\u6700\u5927\u9891\u7387 \u8981\u9650\u5236CPU\u9891\u7387\uff0c\u4fee\u6539\u6700\u5927\u9891\u7387\u503c\uff1a # \u8bbe\u7f6e\u6700\u5927\u9891\u7387\uff08\u793a\u4f8b\uff1a2GHz\uff09 echo 2000000 > \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_max_freq # \u5e94\u7528\u5230\u6240\u6709CPU\u6838\u5fc3 for cpu in \/sys\/devices\/system\/cpu\/cpu[0-9]*; do echo 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