Power management¶

For AMD Zen 2 or newer (not working)¶

add "amd_pstate=active" to "/etc/kernel/cmdline"

root=ZFS=rpool/ROOT/pve-1 boot=zfs amd_pstate=passive

Rebuild RAMDISK

proxmox-boot-tool refresh

CPU power throttle¶

Check CPU frequency¶

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq

Change CPU governor¶

Check current governors (per CPU)

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

Check available governors

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

Set governor

echo "conservative" | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

Set it at boot¶

apt install cpufrequtils

Edit (create) /etc/default/cpufrequtils

GOVERNOR="conservative"

Disks sleep timeout¶

hdparm -s X /dev/disk/by-id/xxxxxxx

Set the standby (spindown) timeout for the drive. The timeout specifies how long to wait in idle (with no disk activity) before turning off the motor to save power. The value of 0 disables spindown, the values from 1 to 240 specify multiples of 5 seconds and values from 241 to 251 specify multiples of 30 minutes. (ref : https://wiki.archlinux.org/index.php/Hdparm#Power_management_configuration)

Set at boot

Edit /etc/hdparm.conf

/dev/disk/by-id/ata-WDC_XXXXXXXX {
    spindown_time = 120
}