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From: Vincent Guittot <vincent.guittot@linaro.org>
To: A L <mail@lechevalier.se>
Cc: Peter Zijlstra <peterz@infradead.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Julia Lawall <julia.lawall@inria.fr>,
	Mel Gorman <mgorman@suse.de>, Ingo Molnar <mingo@redhat.com>,
	kernel-janitors@vger.kernel.org,
	Juri Lelli <juri.lelli@redhat.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>,
	Daniel Bristot de Oliveira <bristot@redhat.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Valentin Schneider <valentin.schneider@arm.com>,
	Gilles Muller <Gilles.Muller@inria.fr>,
	Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
	Linux PM <linux-pm@vger.kernel.org>,
	Len Brown <len.brown@intel.com>
Subject: Re: default cpufreq gov, was: [PATCH] sched/fair: check for idle core
Date: Thu, 22 Oct 2020 15:55:24 +0000	[thread overview]
Message-ID: <CAKfTPtDUMdxWSKQgyjPCn+D-zYzpfgMEy0WYGAQzhcr1jnAX7w@mail.gmail.com> (raw)
In-Reply-To: <c232b2.c086afce.17550fc4644@lechevalier.se>

On Thu, 22 Oct 2020 at 17:45, A L <mail@lechevalier.se> wrote:
>
>
>
> ---- From: Peter Zijlstra <peterz@infradead.org> -- Sent: 2020-10-22 - 14:29 ----
>
> > On Thu, Oct 22, 2020 at 02:19:29PM +0200, Rafael J. Wysocki wrote:
> >> > However I do want to retire ondemand, conservative and also very much
> >> > intel_pstate/active mode.
> >>
> >> I agree in general, but IMO it would not be prudent to do that without making
> >> schedutil provide the same level of performance in all of the relevant use
> >> cases.
> >
> > Agreed; I though to have understood we were there already.
>
> Hi,
>
>
> Currently schedutil does not populate all stats like ondemand does, which can be a problem for some monitoring software.
>
> On my AMD 3000G CPU with kernel-5.9.1:
>
>
> grep. /sys/devices/system/cpu/cpufreq/policy0/stats/*
>
> With ondemand:
> time_in_state:3900000 145179
> time_in_state:1600000 9588482
> total_trans:177565
> trans_table:   From  :    To
> trans_table:         :   3900000   1600000
> trans_table:  3900000:         0     88783
> trans_table:  1600000:     88782         0
>
> With schedutil only two file exists:
> reset:<empty>
> total_trans:216609
>
>
> I'd really like to have these stats populated with schedutil, if that's possible.

Your problem might have been fixed with
commit 96f60cddf7a1 ("cpufreq: stats: Enable stats for fast-switch as well")


>
> Thanks.
>

  reply	other threads:[~2020-10-22 15:55 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-20 16:37 [PATCH] sched/fair: check for idle core Julia Lawall
2020-10-21  7:29 ` Vincent Guittot
2020-10-21 11:13   ` Peter Zijlstra
2020-10-21 12:27   ` Vincent Guittot
2020-10-21 11:20 ` Mel Gorman
2020-10-21 11:56   ` Julia Lawall
2020-10-21 12:19     ` Peter Zijlstra
2020-10-21 12:42       ` Julia Lawall
2020-10-21 12:52         ` Peter Zijlstra
2020-10-21 18:18           ` Rafael J. Wysocki
2020-10-21 18:15         ` Rafael J. Wysocki
2020-10-21 19:47           ` Julia Lawall
2020-10-21 20:25             ` Rafael J. Wysocki
2020-10-21 13:10       ` Peter Zijlstra
2020-10-21 18:11         ` Rafael J. Wysocki
2020-10-22  4:53           ` Viresh Kumar
2020-10-22  7:11           ` Peter Zijlstra
2020-10-22 10:59             ` Viresh Kumar
2020-10-22 11:45               ` Rafael J. Wysocki
2020-10-22 12:02                 ` default cpufreq gov, was: " Peter Zijlstra
2020-10-22 12:19                   ` Rafael J. Wysocki
2020-10-22 12:29                     ` Peter Zijlstra
2020-10-22 14:52                       ` Mel Gorman
2020-10-22 14:58                         ` Colin Ian King
2020-10-22 15:12                           ` Phil Auld
2020-10-22 16:35                             ` Mel Gorman
2020-10-22 17:59                               ` Rafael J. Wysocki
2020-10-22 20:32                                 ` Mel Gorman
2020-10-22 20:39                                   ` Phil Auld
2020-10-22 15:25                         ` Peter Zijlstra
2020-10-22 15:55                           ` Rafael J. Wysocki
2020-10-22 16:29                           ` Mel Gorman
2020-10-22 20:10                           ` Giovanni Gherdovich
2020-10-22 20:16                             ` Giovanni Gherdovich
2020-10-23  7:03                             ` Peter Zijlstra
2020-10-23 17:46                               ` Tom Lendacky
2020-10-26 19:52                                 ` Fontenot, Nathan
2020-10-22 15:45                       ` A L
2020-10-22 15:55                         ` Vincent Guittot [this message]
2020-10-23  5:23                           ` Viresh Kumar
2020-10-22 16:23                   ` [PATCH] cpufreq: Avoid configuring old governors as default with intel_pstate Rafael J. Wysocki
2020-10-23  6:29                     ` Viresh Kumar
2020-10-23 11:59                       ` Rafael J. Wysocki
2020-10-23 15:15                     ` [PATCH v2] " Rafael J. Wysocki
2020-10-27  3:13                       ` Viresh Kumar
2020-10-27 11:11                   ` default cpufreq gov, was: [PATCH] sched/fair: check for idle core Qais Yousef
2020-10-27 11:26                     ` Valentin Schneider
2020-10-27 11:42                       ` Qais Yousef
2020-10-27 11:48                         ` Viresh Kumar
2020-10-23  6:24                 ` Viresh Kumar
2020-10-23 15:06                   ` Rafael J. Wysocki
2020-10-27  3:13                     ` Viresh Kumar
2020-10-22 11:21             ` AW: " Walter Harms
2020-10-21 12:28     ` Mel Gorman
2020-10-21 12:25   ` Vincent Guittot
2020-10-21 12:47     ` Mel Gorman
2020-10-21 12:56       ` Julia Lawall
2020-10-21 13:18         ` Mel Gorman
2020-10-21 13:24           ` Julia Lawall
2020-10-21 15:08             ` Mel Gorman
2020-10-21 15:18               ` Julia Lawall
2020-10-21 15:23                 ` Vincent Guittot
2020-10-21 15:33                   ` Julia Lawall
2020-10-21 15:19               ` Vincent Guittot
2020-10-21 17:00                 ` Mel Gorman
2020-10-21 17:39                   ` Julia Lawall
2020-10-21 13:48           ` Julia Lawall
2020-10-21 15:26             ` Mel Gorman

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