From: Steve Muckle <steve.muckle@linaro.org>
To: Pingbo Wen <pingbo.wen@linaro.org>
Cc: Steve Muckle <steve.muckle@linaro.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
Viresh Kumar <viresh.kumar@linaro.org>,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
Morten Rasmussen <morten.rasmussen@arm.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Juri Lelli <Juri.Lelli@arm.com>,
Patrick Bellasi <patrick.bellasi@arm.com>
Subject: Re: [PATCH v3 0/3] cpufreq: avoid redundant driver calls in schedutil
Date: Thu, 14 Jul 2016 11:00:14 -0700 [thread overview]
Message-ID: <20160714180014.GG27987@graphite.smuckle.net> (raw)
In-Reply-To: <57876337.6090409@linaro.org>
On Thu, Jul 14, 2016 at 06:02:31PM +0800, Pingbo Wen wrote:
> > Steve Muckle (3):
> > cpufreq: add cpufreq_driver_resolve_freq()
> > cpufreq: schedutil: map raw required frequency to driver frequency
>
> Tested the first two patches on db410c, only waking up irq_work 53
> times, while previous was 257 times(79% decrease) in Android home idle
> for 5 minutes.
Thanks Pingbo. My experience measuring the number of calls into the acpi
cpufreq fast switch path was similar. An arbitrary system workload I
chose showed a ~75% reduction in calls.
thanks,
Steve
next prev parent reply other threads:[~2016-07-14 18:00 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-13 20:25 [PATCH v3 0/3] cpufreq: avoid redundant driver calls in schedutil Steve Muckle
2016-07-13 20:25 ` [PATCH v3 1/3] cpufreq: add cpufreq_driver_resolve_freq() Steve Muckle
2016-07-21 19:59 ` Viresh Kumar
2016-07-21 20:31 ` Rafael J. Wysocki
2016-07-21 20:30 ` Viresh Kumar
2016-07-21 20:52 ` Rafael J. Wysocki
2016-07-21 20:52 ` Viresh Kumar
2016-07-21 21:19 ` Rafael J. Wysocki
2016-07-21 21:16 ` Viresh Kumar
2016-07-21 23:21 ` Steve Muckle
2016-07-21 23:29 ` Steve Muckle
2016-07-21 23:31 ` Viresh Kumar
2016-07-21 23:30 ` Viresh Kumar
2016-07-21 23:36 ` Steve Muckle
2016-07-21 23:41 ` Steve Muckle
2016-07-22 0:44 ` Steve Muckle
2016-07-22 15:16 ` Viresh Kumar
2016-07-22 17:49 ` Steve Muckle
2016-07-21 21:13 ` Viresh Kumar
2016-07-13 20:25 ` [PATCH v3 2/3] cpufreq: schedutil: map raw required frequency to driver frequency Steve Muckle
2016-07-13 20:25 ` [PATCH v3 3/3] cpufreq: acpi-cpufreq: use cached frequency mapping when possible Steve Muckle
2016-07-14 10:02 ` [PATCH v3 0/3] cpufreq: avoid redundant driver calls in schedutil Pingbo Wen
2016-07-14 18:00 ` Steve Muckle [this message]
2016-07-21 20:01 ` Viresh Kumar
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