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Message-ID: <CAAYoRsXgmwQXNzDPgVe=_cW=C8_7__GYHCyRKkfX=6dFY9dybw@mail.gmail.com> Date: Thu, 6 Oct 2022 17:06:58 -0700 From: Doug Smythies <dsmythies@...us.net> To: Kajetan Puchalski <kajetan.puchalski@....com> Cc: rafael@...nel.org, daniel.lezcano@...aro.org, lukasz.luba@....com, Dietmar.Eggemann@....com, yu.chen.surf@...il.com, linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, Doug Smythies <dsmythies@...us.net> Subject: Re: [RFC PATCH v2 0/1] cpuidle: teo: Introduce optional util-awareness On Mon, Oct 3, 2022 at 7:49 AM Kajetan Puchalski <kajetan.puchalski@....com> wrote: > > Hi, > > At the moment, all the available idle governors operate mainly based on their own past performance > without taking into account any scheduling information. ... I tried V2 on my Intel i5-10600K, but there was little difference when compared to V1 in terms of enormous increase in processor power consumption for the periodic type tests I ran. However, sometimes the power use would drop down to comparable to the normal teo or menu governors for a short time, which V1 didn't do. I would suggest a completely new governor for your only 2 idle states, and of similar power use, scenario. Incredibly simple: If CPU utilization >= threshold select idle state 0 Else Select idle state 1 Endif As previously mentioned, you are overriding everything that teo does anyhow. Note to other readers: I also sent Kajetan an off-list email with more tests descriptions and web links to results graphs and such. ... Doug
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