David Christensen wrote:
But changing the profile (governor) doesn't produce any
(noticable?) sound level change and also the temperature of
the CPU and the GPU seem unaffected.
You will not notice a change in CPU fan temperature or speed
profiles as a function of the Linux governor setting until
the motherboard CPU fan speed control is working and you
change the CPU load.
Here is a Perl one-liner that should peg one core:
$ perl -e "1 while 1"
OK, I wrote a script [last] and here is the result
$ temp-gov
CPU C (33.50 45.75) (100 iterations) conservative
CPU C (45.88 46.38) (100 iterations) userspace
CPU C (46.38 46.75) (100 iterations) powersave
CPU C (46.75 47.00) (100 iterations) ondemand
CPU C (47.00 47.00) (100 iterations) performance
CPU C (47.00 47.25) (100 iterations) schedutil
Hm ... the result seems to be pretty much identical for the
governors anyway?
#! /bin/zsh
#
# this file:
# https://dataswamp.org/~incal/conf/.zsh/temp
temp-gov () {
local t=100
local cpu
local cpu_min
local cpu_max
perl -e '1 while 1' &
local pid=$!
sleep 10
local i
local g
for g in $(cpufreq-info -g); do
sudo cpufreq-set -g $g
cpu_min=999
cpu_max=0
for i in {0..$t}; do
cpu=$(sensors -j | jq -a '.["k10temp-pci-00c3"].Tdie.temp1_input')
(( $cpu < $cpu_min )) && cpu_min=$cpu
(( $cpu > $cpu_max )) && cpu_max=$cpu
done
printf "CPU C (%.2f %.2f) (%d iterations) %s\n" $cpu_min $cpu_max $t $g
done
kill $pid
}