修改启动项
root@pve:~# nano /etc/default/grub
找到quiet那个位置，后面加空格，再加intel_pstate=disable
加上参数后保存，并更新grub
root@pve:~# update-grub
保存完后重启生效。
安装cpufrequtils
[email protected]:~# apt-get install cpufrequtils
配置cpufrequtils，先查看一下信息
[email protected]:~# cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to [email protected], please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 1.60 GHz - 2.30 GHz available frequency steps: 2.30 GHz, 2.20 GHz, 2.10 GHz, 2.00 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz, 1.60 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance, schedutil current policy: frequency should be within 1.60 GHz and 1.60 GHz. The governor "performance" may decide which speed to use within this range. current CPU frequency is 2.30 GHz (asserted by call to hardware). cpufreq stats: 2.30 GHz:12.35%, 2.20 GHz:0.00%, 2.10 GHz:0.00%, 2.00 GHz:5.16%, 1.90 GHz:0.00%, 1.80 GHz:0.00%, 1.70 GHz:0.00%, 1.60 GHz:82.49% (4) analyzing CPU 1: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.0 us. hardware limits: 1.60 GHz - 2.30 GHz available frequency steps: 2.30 GHz, 2.20 GHz, 2.10 GHz, 2.00 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz, 1.60 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance, schedutil current policy: frequency should be within 1.60 GHz and 1.60 GHz. The governor "performance" may decide which speed to use within this range. current CPU frequency is 2.30 GHz (asserted by call to hardware). cpufreq stats: 2.30 GHz:12.35%, 2.20 GHz:0.00%, 2.10 GHz:0.00%, 2.00 GHz:2.45%, 1.90 GHz:0.00%, 1.80 GHz:0.00%, 1.70 GHz:0.00%, 1.60 GHz:85.21% (4)
可以看到目前是performance模式，主频是2.30 GHz ，下面就配置一下，改成省电模式（powersave) 以最低允许的主频运行
[email protected]:~# vi /etc/init.d/cpufrequtils
找到如下：
ENABLE="true" GOVERNOR="performance" MAX_SPEED="2300000" MIN_SPEED="1600000"
改成：
ENABLE="true" GOVERNOR="powersave" MAX_SPEED="1600000" MIN_SPEED="1600000"
保存后，重启服务：
[email protected]:~# systemctl daemon-reload [email protected]:~# /etc/init.d/cpufrequtils restart
如果不生效，查看一下是否有/etc/default/cpufrequtils文件，如果有，在这里修改就可以了。
查看状态
[email protected]:~# cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to [email protected], please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 1.60 GHz - 2.30 GHz available frequency steps: 2.30 GHz, 2.20 GHz, 2.10 GHz, 2.00 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz, 1.60 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance, schedutil current policy: frequency should be within 1.60 GHz and 1.60 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 1.60 GHz (asserted by call to hardware). cpufreq stats: 2.30 GHz:12.35%, 2.20 GHz:0.00%, 2.10 GHz:0.00%, 2.00 GHz:5.16%, 1.90 GHz:0.00%, 1.80 GHz:0.00%, 1.70 GHz:0.00%, 1.60 GHz:82.49% (4) analyzing CPU 1: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.0 us. hardware limits: 1.60 GHz - 2.30 GHz available frequency steps: 2.30 GHz, 2.20 GHz, 2.10 GHz, 2.00 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz, 1.60 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance, schedutil current policy: frequency should be within 1.60 GHz and 1.60 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 1.60 GHz (asserted by call to hardware). cpufreq stats: 2.30 GHz:12.35%, 2.20 GHz:0.00%, 2.10 GHz:0.00%, 2.00 GHz:2.45%, 1.90 GHz:0.00%, 1.80 GHz:0.00%, 1.70 GHz:0.00%, 1.60 GHz:85.21% (4)
看到已经修改生效了。
经过测试，省电模式下，待机会保持在最低功耗，温度也最低。
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