Talk:Power management/Processor

Powersave
According to https://www.kernel.org/doc/Documentation/cpu-freq/intel-pstate.txt, you can theoretically set "powersave" (which works as ACPI ondemand) as the default governor for intel pstate, in addition to "performance". It should probably be explained a bit further in this article. I haven't, however, run any proper benchmark and I've just started testing it in real life on a laptop without apparent performance impact. See also the discussion here: https://forums.gentoo.org/viewtopic-t-1013630-highlight-intel+pstate+cpupower.html, although it dates from quite a while ago.

I just want to note, this applies also to the pstate description in the Power management article.

Yuri69 (talk) 22:40, 2 November 2018 (UTC)

Merge this article into Power_management/Guide
As this article is widely overlapping with the Power management/Guide readers searching advise for e.g. CPU Frequency scaling have to compare both articles. That's time consuming. So why not merge this into Power management/Guide? --Charles17 (talk) 08:26, 1 June 2019 (UTC)

Linux kernel >=5.7 updated Intel CPU frequency scaling
Since (I think) version 5.7, the Linux kernel has a plethora of options for Intel CPU frequency scaling described in Documentation/admin-guide/pm/intel_pstate.rst. Sadly, in some cases the default behaviour will lock people's CPU at their lowest frequency - notably to those who don't have the "hwp" CPU flag, who would most likely want to activate the "schedutil" governor and set it as default.

I won't pretend I know enough or have enough Intel hardware to test to adjust this page myself, so I'll leave this comment here.

Gabrielg