From: Stratos Karafotis <stratosk@semaphore.gr>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Viresh Kumar <viresh.kumar@linaro.org>,
cpufreq@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 linux-next] cpufreq: ondemand: Calculate gradient of CPU load to early increase frequency
Date: Tue, 02 Apr 2013 18:49:14 +0300 [thread overview]
Message-ID: <515AFDFA.8090108@semaphore.gr> (raw)
In-Reply-To: <1544183.cq3KaqH8x3@vostro.rjw.lan>
On 04/02/2013 04:50 PM, Rafael J. Wysocki wrote:
> Do you have any numbers indicating that this actually makes things better?
>
> Rafael
No, I don't.
The expected behaviour after this patch is to "force" max frequency few sampling periods earlier.
The idea was to increase system responsiveness especially on 'small' embedded systems (phones for example).
Actually, I thought to provide some numbers but I had no idea how to measure this.
Would it be enough to provide the number of times that the CPU increases frequency
because of early_demand versus the total number of increments?
Thanks,
Stratos
next prev parent reply other threads:[~2013-04-02 15:49 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-20 20:50 [PATCH linux-next] cpufreq: ondemand: Calculate gradient of CPU load to early increase frequency Stratos Karafotis
2013-02-21 4:59 ` Viresh Kumar
2013-02-21 11:31 ` [PATCH v2 " Stratos Karafotis
2013-02-21 15:33 ` Viresh Kumar
2013-02-21 17:39 ` [PATCH v3 " Stratos Karafotis
2013-02-22 1:56 ` Viresh Kumar
2013-02-22 5:57 ` Viresh Kumar
2013-02-22 12:47 ` Rafael J. Wysocki
2013-03-29 22:27 ` Stratos Karafotis
2013-03-29 22:38 ` Rafael J. Wysocki
2013-04-02 13:50 ` Rafael J. Wysocki
2013-04-02 15:49 ` Stratos Karafotis [this message]
2013-04-02 22:55 ` Rafael J. Wysocki
-- strict thread matches above, loose matches on Subject: below --
2013-04-03 6:31 stratosk
2013-04-03 6:43 ` Viresh Kumar
2013-04-03 11:14 ` Rafael J. Wysocki
2013-04-03 23:30 ` Stratos Karafotis
2013-04-04 4:54 ` Viresh Kumar
2013-04-05 19:50 ` Stratos Karafotis
2013-04-09 16:56 ` Stratos Karafotis
2013-04-10 3:22 ` Viresh Kumar
2013-04-16 18:34 ` Stratos Karafotis
2013-04-26 14:41 ` Stratos Karafotis
2013-04-04 6:47 stratosk
2013-04-04 6:51 ` Viresh Kumar
2013-04-04 7:21 stratosk
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