From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Toralf Förster" <toralf.foerster@gmx.de>,
vatsa@linux.vnet.ibm.com, "Tomasz Chmielewski" <mangoo@wpkg.org>,
linux-kernel@vger.kernel.org, dhaval@linux.vnet.ibm.com
Subject: Re: (ondemand) CPU governor regression between 2.6.23 and 2.6.24
Date: Sun, 27 Jan 2008 23:32:18 +0100 [thread overview]
Message-ID: <20080127223218.GA19948@elte.hu> (raw)
In-Reply-To: <1201469236.6149.7.camel@lappy>
* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> On Sun, 2008-01-27 at 17:57 +0100, Toralf Förster wrote:
>
> > It would be nice to run a grid application at lowest priority
> > without impact to power / fan / temperature but OTOH have full
> > performance for desktop applications, isn't it ?
>
> This can be achieved by giving the group/uid the grid application uses
> a weight of 2.
yes, that's the correct solution. For example, the following line in
/etc/rc.d/rc.local:
echo 2 > /sys/kernel/uids/`grep -w nobody /etc/passwd | cut -d: -f3`/cpu_share
sets user 'nobody' to a very low cpu weight. If there's any grid user,
it can be done similarly. The default is 1024.
Ingo
next prev parent reply other threads:[~2008-01-27 22:32 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-26 17:11 (ondemand) CPU governor regression between 2.6.23 and 2.6.24 Tomasz Chmielewski
2008-01-26 18:46 ` Toralf Förster
2008-01-27 14:46 ` Srivatsa Vaddagiri
2008-01-27 15:06 ` Toralf Förster
2008-01-27 16:54 ` Srivatsa Vaddagiri
2008-01-27 16:57 ` Toralf Förster
2008-01-27 21:27 ` Peter Zijlstra
2008-01-27 22:32 ` Ingo Molnar [this message]
2008-01-28 8:38 ` Helge Hafting
2008-01-26 21:38 ` Toralf Förster
2008-01-26 21:45 ` Sam Ravnborg
[not found] ` <200801271200.04971.toralf.foerster@gmx.de>
[not found] ` <1201433167.22060.10.camel@homer.simson.net>
2008-01-27 12:39 ` Toralf Förster
2008-01-27 18:58 ` Mike Galbraith
2008-01-27 21:14 ` Toralf Förster
2008-01-27 21:25 ` Peter Zijlstra
2008-01-28 13:18 ` Ingo Molnar
2008-01-28 15:16 ` Toralf Förster
-- strict thread matches above, loose matches on Subject: below --
2008-01-26 14:06 Toralf Förster
2008-02-04 0:32 ` Andrew Morton
2008-02-04 0:36 ` Andrew Morton
2008-02-04 17:44 ` Pallipadi, Venkatesh
2008-02-04 17:44 ` Pallipadi, Venkatesh
2008-02-04 19:18 ` Toralf Förster
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