linux-kernel - Re: [RFC PATCH v4 0/2] cpuidle: teo: Introduce util-awareness

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Message-ID: <f2b2b8da209a9cf22e80b089a698f78dd5c2f5fb.camel@intel.com>
Date:   Sun, 27 Nov 2022 00:43:24 +0800
From:   Zhang Rui <rui.zhang@...el.com>
To:     Doug Smythies <dsmythies@...us.net>,
        'Kajetan Puchalski' <kajetan.puchalski@....com>,
        rafael@...nel.org
Cc:     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
Subject: Re: [RFC PATCH v4 0/2] cpuidle: teo: Introduce util-awareness

> > Workflow: sleeping ebizzy 128 threads.
> > Variable: interval (uSecs).
> > Performance Results:
> > http://smythies.com/~doug/linux/idle/teo-util/graphs/ebizzy-128-perf.png
> > Performance power and idle data:
> > http://smythies.com/~doug/linux/idle/teo-util/ebizzy/perf/
> 
> for the "Idle state 0/1/2/3 was too deep" graphs, may I know how you
> assert that an idle state is too deep/shallow?
> 
is this got from the cpu_idle_miss trace event?

thanks,
rui