Messages in this thread | | | From | Valentin Schneider <> | Subject | Re: default cpufreq gov, was: [PATCH] sched/fair: check for idle core | Date | Tue, 27 Oct 2020 11:26:37 +0000 |
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On 27/10/20 11:11, Qais Yousef wrote: > On 10/22/20 14:02, Peter Zijlstra wrote: >> However I do want to retire ondemand, conservative and also very much >> intel_pstate/active mode. I also have very little sympathy for >> userspace. > > Userspace is useful for testing and sanity checking. Not sure if people use it > to measure voltage/current at each frequency to generate > dynamic-power-coefficient for their platform. Lukasz, Dietmar? >
It's valuable even just for cpufreq sanity checking - we have that test that goes through increasing frequencies and asserts the work done is monotonically increasing. This has been quite useful in the past to detect broken bits.
That *should* still be totally doable with any other governor by using the scaling_{min, max}_freq sysfs interface.
> Thanks
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