I am trying to set up all my CPU cores to performance mode at boot.
I've installed cpufrequtils and have set up /etc/init.d/cpufrequtils as (note GOVERNOR)
#!/bin/sh
### BEGIN INIT INFO
# Provides: cpufrequtils
# Required-Start: $remote_fs loadcpufreq
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop:
# Short-Description: set CPUFreq kernel parameters
# Description: utilities to deal with CPUFreq Linux
# kernel support
### END INIT INFO
#
DESC="CPUFreq Utilities"
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
CPUFREQ_SET=/usr/bin/cpufreq-set
CPUFREQ_INFO=/usr/bin/cpufreq-info
CPUFREQ_OPTIONS=""
# use lsb-base
. /lib/lsb/init-functions
# Which governor to use. Must be one of the governors listed in:
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
#
# and which limits to set. Both MIN_SPEED and MAX_SPEED must be values
# listed in:
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
# a value of 0 for any of the two variables will disabling the use of
# that limit variable.
#
# WARNING: the correct kernel module must already be loaded or compiled in.
#
# Set ENABLE to "true" to let the script run at boot time.
#
# eg: ENABLE="true"
# GOVERNOR="ondemand"
# MAX_SPEED=1000
# MIN_SPEED=500
ENABLE="true"
#GOVERNOR="ondemand"
GOVERNOR="performance"
MAX_SPEED="0"
MIN_SPEED="0"
check_governor_avail() {
info="/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors"
if [ -f $info ] && grep -q "\<$GOVERNOR\>" $info ; then
return 0;
fi
return 1;
}
[ -x $CPUFREQ_SET ] || exit 0
if [ -f /etc/default/cpufrequtils ] ; then
. /etc/default/cpufrequtils
fi
# if not enabled then exit gracefully
[ "$ENABLE" = "true" ] || exit 0
if [ -n "$MAX_SPEED" ] && [ $MAX_SPEED != "0" ] ; then
CPUFREQ_OPTIONS="$CPUFREQ_OPTIONS --max $MAX_SPEED"
fi
if [ -n "$MIN_SPEED" ] && [ $MIN_SPEED != "0" ] ; then
CPUFREQ_OPTIONS="$CPUFREQ_OPTIONS --min $MIN_SPEED"
fi
if [ -n "$GOVERNOR" ] ; then
CPUFREQ_OPTIONS="$CPUFREQ_OPTIONS --governor $GOVERNOR"
fi
CPUS=$(cat /proc/stat|sed -ne 's/^cpu\([[:digit:]]\+\).*/\1/p')
RETVAL=0
case "$1" in
start|force-reload|restart|reload)
log_action_begin_msg "$DESC: Setting $GOVERNOR CPUFreq governor"
if check_governor_avail ; then
for cpu in $CPUS ; do
log_action_cont_msg "CPU${cpu}"
$CPUFREQ_SET --cpu $cpu $CPUFREQ_OPTIONS 2>&1 > /dev/null || \
RETVAL=$?
done
log_action_end_msg $RETVAL ""
else
log_action_cont_msg "disabled, governor not available"
log_action_end_msg $RETVAL
fi
;;
stop)
;;
*)
echo "Usage: $0 {start|stop|restart|reload|force-reload}"
exit 1
esac
exit 0
It seems that the governor was changed at boot:
# service cpufrequtils status
● cpufrequtils.service - LSB: set CPUFreq kernel parameters
Loaded: loaded (/etc/init.d/cpufrequtils; generated)
Active: active (exited) since Fri 2025-03-21 08:18:51 EDT; 13min ago
Invocation: a2f6ec03da2e4525949e64454acabed8
Docs: man:systemd-sysv-generator(8)
Process: 1098 ExecStart=/etc/init.d/cpufrequtils start (code=exited, status=0/SUCCESS)
Mem peak: 2.1M
CPU: 8ms
Mar 21 08:18:51 debian systemd[1]: Starting cpufrequtils.service - LSB: set CPUFreq kernel parameters...
Mar 21 08:18:51 debian cpufrequtils[1098]: CPUFreq Utilities: Setting performance CPUFreq governor...CPU0...CPU1...CPU2...CPU3...CP>
Mar 21 08:18:51 debian systemd[1]: Started cpufrequtils.service - LSB: set CPUFreq kernel parameters.
But as soon as I log in, even in a virtual terminal, it is changed to "powersave".
# cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
I also tried a script to manually change the governor on boot, which ran successfully, but it was also reverted to powersave every time. (But if I run it after login, it seems to stick.)
Does anyone have any idea what is changing the governor to powersave?
Some info about the system:
$ inxi -v3
System:
Host: debian Kernel: 6.13.7-1-siduction-amd64 arch: x86_64 bits: 64
compiler: gcc v: 14.2.0
Desktop: KDE Plasma v: 6.3.2 Distro: siduction 2024.1.0 shine-on - kde -
(202412261719) base: Debian GNU/Linux trixie/sid
Machine:
Type: Desktop System: ASUS product: N/A v: N/A serial: <superuser required>
Mobo: ASUSTeK model: TUF GAMING B850-PLUS WIFI v: Rev 1.xx
serial: <superuser required> UEFI: American Megatrends v: 0237
date: 09/20/2024
Battery:
Device-1: hidpp_battery_0 model: Logitech Wireless Mouse B330/M330/M331
charge: 55% (should be ignored) status: discharging
CPU:
Info: 8-core model: AMD Ryzen 7 9700X bits: 64 type: MT MCP arch: N/A rev: 0
cache: L1: 640 KiB L2: 8 MiB L3: 32 MiB
Speed (MHz): avg: 2991 min/max: 600/5581 boost: enabled cores: 1: 2991
2: 2991 3: 2991 4: 2991 5: 2991 6: 2991 7: 2991 8: 2991 9: 2991 10: 2991
11: 2991 12: 2991 13: 2991 14: 2991 15: 2991 16: 2991 bogomips: 121364
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 23 [Radeon RX 6600/6600
XT/6600M] vendor: ASRock driver: amdgpu v: kernel arch: RDNA-2
bus-ID: 03:00.0
Device-2: Advanced Micro Devices [AMD/ATI] Granite Ridge [Radeon Graphics]
vendor: ASUSTeK driver: amdgpu v: kernel bus-ID: 0e:00.0 temp: 26.0 C
Display: x11 server: X.Org v: 21.1.16 with: Xwayland v: 24.1.6 driver: X:
loaded: amdgpu unloaded: fbdev,modesetting,radeon,vesa dri: radeonsi
gpu: amdgpu resolution: 1920x1080~60Hz
API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.0.2-1 glx-v: 1.4
direct-render: yes renderer: AMD Radeon RX 6600 (radeonsi navi23 LLVM
19.1.7 DRM 3.61 6.13.7-1-siduction-amd64)
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor gpu: amdgpu_top wl: wayland-info
x11: xdriinfo, xdpyinfo, xprop, xrandr
Network:
Device-1: Realtek RTL8125 2.5GbE vendor: ASUSTeK driver: r8169 v: kernel
port: e000 bus-ID: 0a:00.0
IF: eno1 state: down mac: 60:cf:84:cc:9d:90
Device-2: MEDIATEK vendor: AzureWave driver: mt7925e v: kernel port: N/A
bus-ID: 0b:00.0
IF: wlan0 state: up mac: c0:bf:be:70:10:58
IF-ID-1: tailscale0 state: unknown speed: -1 duplex: full mac: N/A
Drives:
Local Storage: total: 3.64 TiB used: 45.6 GiB (1.2%)
Info:
Memory: total: 60 GiB note: est. available: 60.48 GiB used: 5.15 GiB (8.5%)
Processes: 493 Uptime: 17m Init: systemd
Packages: 4264 Compilers: gcc: 14.2.0 Shell: Bash v: 5.2.37 inxi: 3.3.37
