[Cin] ot: intel_pstate

Andrew Randrianasulu randrianasulu at gmail.com
Sat Mar 2 01:16:07 CET 2024

My laptop was making noises under load, and sadly trayfreq was unable to
set cpu frequency for some reason. I poked around /sys and found
intel_pstate driver can be configured this way:

echo 25 > /sys/devices/system/cpu/intel_pstate/max_perf_pct

this sets max frequency to 800 mhz instead of 2.5/3.0 ghz as usual.

note that 25 is percentage, and on different core iXXX processors results
can be different.

CPU: dual core Intel Core i5-2450M (-MT MCP-) speed/min/max: 798/800/3100
MHz                      Kernel: 5.6.14-x64 x86_64 Up: 27d 14m
Mem: 2453.5/5887.8 MiB (41.7%)                               Storage:
610.63 GiB (76.4% used) Procs: 227 Shell: Bash inxi: 3.3.12

I hope this might help Phyllis with her overheating intel laptop .....
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