看看 CPU 現在用哪種模式

前提條件 系統:Linux(Debian、Ubuntu、Proxmox 等都行)

權限:root

CPU:支援動態調頻(Intel Xeon、AMD EPYC / Ryzen 等)

governor

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

  • powersave:省電小綿羊(頻率鎖低,省電但沒力)
  • ondemand:按需加速(要用時才升頻,可能反應慢半拍)
  • performance:全程高能(我們要的就是它!💪)

確認核心到底用哪種驅動(Intel / AMD)

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver

暫時拉滿效能

for cpu in /sys/devices/system/cpu/cpu[0-9]*; do
  echo performance > $cpu/cpufreq/scaling_governor
done

重啟後也保持高能

方案 A:最穩妥推薦

apt install cpufrequtils -y

echo 'GOVERNOR="performance"' >/etc/default/cpufrequtils
systemctl enable cpufrequtils
systemctl start cpufrequtils

方案 B:systemd 自訂服務

# /etc/systemd/system/cpu-performance.service
[Unit]
Description=Set CPU governor to performance
After=multi-user.target

[Service]
Type=oneshot
ExecStart=/bin/bash -c 'for cpu in /sys/devices/system/cpu/cpu[0-9]*; do echo performance > $cpu/cpufreq/scaling_governor; done'

[Install]
WantedBy=multi-user.target
systemctl daemon-reexec
systemctl daemon-reload
systemctl enable --now cpu-performance.service