From: Peter Zijlstra <peterz@infradead.org>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Quentin Perret <quentin.perret@arm.com>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Juri Lelli <juri.lelli@redhat.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Morten Rasmussen <Morten.Rasmussen@arm.com>,
viresh kumar <viresh.kumar@linaro.org>,
Valentin Schneider <valentin.schneider@arm.com>,
Patrick Bellasi <patrick.bellasi@arm.com>,
Joel Fernandes <joel@joelfernandes.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH v6 04/11] cpufreq/schedutil: use rt utilization tracking
Date: Fri, 22 Jun 2018 15:52:02 +0200 [thread overview]
Message-ID: <20180622135202.GD2512@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20180622132624.GL2494@hirez.programming.kicks-ass.net>
On Fri, Jun 22, 2018 at 03:26:24PM +0200, Peter Zijlstra wrote:
> > But this also means that we will start to inflate the utilization to
> > get higher OPP even if there is idle time and lost the interest of
> > using dl bw
>
> You get _some_ inflation, but only if there is actual cfs utilization to
> begin with.
Note that at high idle time, the inflation really is minimal:
f(.2,.2,2)
.20312500000000000000
next prev parent reply other threads:[~2018-06-22 13:52 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-08 12:09 [PATCH v6 00/11] track CPU utilization Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 01/11] sched/pelt: Move pelt related code in a dedicated file Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 02/11] sched/pelt: remove blank line Vincent Guittot
2018-06-21 14:33 ` Peter Zijlstra
2018-06-21 18:42 ` Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 03/11] sched/rt: add rt_rq utilization tracking Vincent Guittot
2018-06-15 11:52 ` Dietmar Eggemann
2018-06-15 12:18 ` Vincent Guittot
2018-06-15 14:55 ` Dietmar Eggemann
2018-06-21 18:50 ` Peter Zijlstra
2018-06-08 12:09 ` [PATCH v6 04/11] cpufreq/schedutil: use rt " Vincent Guittot
2018-06-18 9:00 ` Dietmar Eggemann
2018-06-18 12:58 ` Vincent Guittot
2018-06-21 18:45 ` Peter Zijlstra
2018-06-21 18:57 ` Peter Zijlstra
2018-06-22 8:10 ` Vincent Guittot
2018-06-22 11:41 ` Peter Zijlstra
2018-06-22 12:14 ` Vincent Guittot
2018-06-22 7:58 ` Juri Lelli
2018-06-22 7:58 ` Quentin Perret
2018-06-22 11:37 ` Peter Zijlstra
2018-06-22 11:44 ` Peter Zijlstra
2018-06-22 12:23 ` Vincent Guittot
2018-06-22 13:26 ` Peter Zijlstra
2018-06-22 13:52 ` Peter Zijlstra [this message]
2018-06-22 13:54 ` Vincent Guittot
2018-06-22 13:57 ` Vincent Guittot
2018-06-22 14:46 ` Peter Zijlstra
2018-06-22 14:49 ` Vincent Guittot
2018-06-22 14:11 ` Peter Zijlstra
2018-06-22 14:48 ` Peter Zijlstra
2018-06-22 14:12 ` Vincent Guittot
2018-06-22 12:54 ` Quentin Perret
2018-06-22 13:29 ` Peter Zijlstra
2018-06-22 15:22 ` Peter Zijlstra
2018-06-22 15:30 ` Quentin Perret
2018-06-22 17:24 ` Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 05/11] sched/dl: add dl_rq " Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 06/11] cpufreq/schedutil: use dl " Vincent Guittot
2018-06-08 12:39 ` Juri Lelli
2018-06-08 12:48 ` Vincent Guittot
2018-06-08 12:54 ` Juri Lelli
2018-06-08 13:36 ` Juri Lelli
2018-06-08 13:38 ` Vincent Guittot
2018-06-22 15:24 ` Peter Zijlstra
2018-06-22 17:22 ` Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 07/11] sched/irq: add irq " Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 08/11] cpufreq/schedutil: take into account interrupt Vincent Guittot
2018-06-12 8:54 ` Dietmar Eggemann
2018-06-12 9:10 ` Vincent Guittot
2018-06-12 9:16 ` Vincent Guittot
2018-06-12 9:20 ` Quentin Perret
2018-06-12 9:26 ` Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 09/11] sched: use pelt for scale_rt_capacity() Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 10/11] sched: remove rt_avg code Vincent Guittot
2018-06-08 12:09 ` [PATCH v6 11/11] proc/sched: remove unused sched_time_avg_ms Vincent Guittot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180622135202.GD2512@hirez.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=Morten.Rasmussen@arm.com \
--cc=daniel.lezcano@linaro.org \
--cc=dietmar.eggemann@arm.com \
--cc=joel@joelfernandes.org \
--cc=juri.lelli@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=mingo@redhat.com \
--cc=patrick.bellasi@arm.com \
--cc=quentin.perret@arm.com \
--cc=rjw@rjwysocki.net \
--cc=valentin.schneider@arm.com \
--cc=vincent.guittot@linaro.org \
--cc=viresh.kumar@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.