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优化 CPU 调度器配置
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CallMeR
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@@ -149,7 +149,7 @@ $ apt dist-upgrade
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其中 `unattended-upgrades` 为系统自动更新服务，后续会对其进行配置。
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`cpufrequtils` 为 CPU 调度器的配置工具，后续会对 CPU 调度算法进行调整。
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`linux-cpupower` 为 CPU 调度器的配置工具，后续会对 CPU 调度算法进行调整。
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```bash
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## 同步镜像仓库
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@@ -162,7 +162,7 @@ $ apt install htop lm-sensors unzip neovim tmux unattended-upgrades powermgmt-ba
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$ apt install iperf iperf3 iftop
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## 安装 CPU 调度调整工具
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$ apt install cpufrequtils
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$ apt install linux-cpupower
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## 根据 CPU 厂商安装 CPU 微码工具
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$ apt install intel-microcode (amd64-microcode)
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+62
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@@ -15,7 +15,7 @@ $ apt install htop lm-sensors unzip neovim tmux unattended-upgrades powermgmt-ba
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$ apt install iperf iperf3 iftop
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## 安装 CPU 调度调整工具
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$ apt install cpufrequtils
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$ apt install linux-cpupower
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## 根据 CPU 厂商安装 CPU 微码工具
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$ apt install intel-microcode (amd64-microcode)
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@@ -82,26 +82,28 @@ MS Name/IP address Stratum Poll Reach LastRx Last sample
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## 2. CPU 调度器
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安装好 `cpufrequtils` 后，需检查 CPU 当前调度器。
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安装 `linux-cpupower` 后，需检查 CPU 当前调度器。
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```bash
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## 检查 CPU 当前调度器
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$ cpufreq-info
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$ cpupower -c all frequency-info
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#### 设备 CPU - J4125 示例输出
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cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
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Report errors and bugs to cpufreq@vger.kernel.org, please.
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analyzing CPU 0:
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driver: intel_cpufreq
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CPUs which run at the same hardware frequency: 0
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CPUs which need to have their frequency coordinated by software: 0
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maximum transition latency: 20.0 us.
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maximum transition latency: 20.0 us
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hardware limits: 800 MHz - 2.70 GHz
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available cpufreq governors: conservative, ondemand, userspace, powersave, performance, schedutil
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available cpufreq governors: conservative ondemand userspace powersave performance schedutil
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current policy: frequency should be within 800 MHz and 2.70 GHz.
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The governor "ondemand" may decide which speed to use
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within this range.
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current CPU frequency is 1.84 GHz.
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current CPU frequency: Unable to call hardware
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current CPU frequency: 800 MHz (asserted by call to kernel)
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boost state support:
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Supported: yes
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Active: yes
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#### 设备 CPU - N6005 示例输出
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cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
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@@ -159,30 +161,69 @@ performance powersave
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- CPU 驱动为 `intel_pstate` 时，推荐使用 `powersave` 调度器。
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本文使用 `powersave` 调度器为演示，使用 `nano` 编辑器来编辑 `cpufrequtils` 的配置文件。
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因为该配置文件很长，完整的配置文件可查看 [pve_cpufrequtils.conf](./src/pve_cpufrequtils.conf) 以便对比。
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修改完成后，需要重启 PVE 服务器来使参数生效。
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本文使用 `powersave` 调度器为演示，使用 `nano` 编辑器创建 `linux-cpupower` 的配置文件。
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```bash
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## 编辑 cpufrequtils 配置文件
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$ nano /etc/init.d/cpufrequtils
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## 创建 linux-cpupower 配置文件
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$ nano /etc/default/cpupower
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```
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在配置文件中修改以下配置项，并保存。
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```bash
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## cpufrequtils 配置项
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# This configuration file is customized by fox
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# Optimize system CPU governors
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ENABLE="true"
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GOVERNOR="powersave" ## 修改本行的调度器为 powersave
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MAX_SPEED="0"
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MIN_SPEED="0"
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CPUPOWER_START_OPTS="frequency-set -g powersave"
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CPUPOWER_STOP_OPTS="frequency-set -g performance"
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```
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PVE 服务器重启完成后需再次查看 CPU 调度器，检验配置文件是否生效。
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使用 `nano` 编辑器创建 `linux-cpupower` 服务配置文件，以满足系统自动化设置需求。
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```bash
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## 创建 linux-cpupower 服务配置文件
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$ nano /usr/lib/systemd/system/cpupower.service
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```
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在服务配置文件中修改以下配置项，并保存。
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```bash
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# This configuration file is customized by fox,
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# Optimize for cpupower systemd service.
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[Unit]
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Description=Apply cpupower configuration
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ConditionVirtualization=!container
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After=syslog.target
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[Service]
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Type=oneshot
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EnvironmentFile=/etc/default/cpupower
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ExecStart=/usr/bin/cpupower $CPUPOWER_START_OPTS
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ExecStop=/usr/bin/cpupower $CPUPOWER_STOP_OPTS
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RemainAfterExit=yes
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[Install]
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WantedBy=multi-user.target
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```
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由于修改了服务项，需要使用以下命令进行重载。
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```bash
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## 服务重载
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$ systemctl daemon-reload
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```
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使用以下命令让 `linux-cpupower` 服务开机自启动。
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```bash
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## 设置 PPPoE 拨号服务开机自启
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$ systemctl enable cpupower.service
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```
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修改完成后，需重启 PVE 服务器，并再次查看 CPU 调度器，检验配置文件是否生效。
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这里提供两个额外命令，方便实时查看 CPU 当前频率和温度状况。
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@@ -0,0 +1,6 @@
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# This configuration file is customized by fox
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# Optimize system CPU governors
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CPUPOWER_START_OPTS="frequency-set -g powersave"
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CPUPOWER_STOP_OPTS="frequency-set -g performance"
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@@ -0,0 +1,18 @@
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# This configuration file is customized by fox,
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# Optimize for cpupower systemd service.
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[Unit]
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Description=Apply cpupower configuration
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ConditionVirtualization=!container
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After=syslog.target
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[Service]
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Type=oneshot
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EnvironmentFile=/etc/default/cpupower
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ExecStart=/usr/bin/cpupower $CPUPOWER_START_OPTS
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ExecStop=/usr/bin/cpupower $CPUPOWER_STOP_OPTS
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RemainAfterExit=yes
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[Install]
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WantedBy=multi-user.target
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