From: Balaji Rao <balajirrao@gmail.com>
To: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, containers@lists.osdl.org,
menage@google.com, a.p.zijlstra@chello.nl, balbir@in.ibm.com,
Ingo Molnar <mingo@elte.hu>,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Subject: Re: [RFC][-mm] [1/2] Simple stats for cpu resource controller
Date: Sun, 6 Apr 2008 00:39:02 +0530 [thread overview]
Message-ID: <200804060039.03083.balajirrao@gmail.com> (raw)
In-Reply-To: <20080405185616.GA21279@linux.vnet.ibm.com>
On Sunday 06 April 2008 12:26:16 am Dhaval Giani wrote:
> On Sat, Apr 05, 2008 at 11:39:46PM +0530, Balaji Rao wrote:
> > This patch implements some trivial statistics for the CPU controller.
> >
> > As per our current requirements, we have decided to keep the stats tick
based as opposed to using CFS precise accounting.
> >
>
> A quick question? Why? Everywhere in the CFS we use precise accounting,
> (even within the CPU controller). Doesn't make sense using ticks here
> then.
>
Using CFS precise accounting has a cost (see task_utime and task_stime).
Currently our requirements don't call for precise statistics.
--
regards,
Balaji Rao
Dept. of Mechanical Engineering,
National Institute of Technology Karnataka, India
next prev parent reply other threads:[~2008-04-05 19:15 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-05 18:09 Balaji Rao
2008-04-05 18:56 ` Dhaval Giani
2008-04-05 19:09 ` Balaji Rao [this message]
2008-04-05 19:40 ` Dhaval Giani
2008-04-05 20:31 ` Balaji Rao
2008-04-05 20:59 ` Dhaval Giani
2008-04-05 21:21 ` Balaji Rao
2008-04-06 5:12 ` Balbir Singh
2008-04-07 13:24 ` Peter Zijlstra
2008-04-10 16:09 ` Balaji Rao
2008-04-10 16:25 ` Peter Zijlstra
2008-05-01 17:41 ` [RFC][-mm] Simple stats for cpu resource controller v3 Balaji Rao
2008-05-01 21:00 ` Andrew Morton
2008-05-02 19:40 ` Balaji Rao
2008-05-02 19:53 ` Andrew Morton
2008-05-02 22:47 ` Balaji Rao
2008-05-02 23:04 ` Andrew Morton
[not found] ` <200805030457.54073.balajirrao@gmail.com>
[not found] ` <20080502164133.9025a02c.akpm@linux-foundation.org>
2008-05-02 23:56 ` Balaji Rao
2008-05-03 0:19 ` Andrew Morton
2008-05-11 20:18 ` [RFC][-mm] Simple stats for cpu resource controller v4 Balaji Rao
2008-05-12 2:54 ` Li Zefan
2008-05-12 5:41 ` Balaji Rao
2008-05-12 23:48 ` Andrew Morton
2008-05-13 3:30 ` Balaji Rao
-- strict thread matches above, loose matches on Subject: below --
2008-03-26 18:18 [RFC][-mm] [1/2] Simple stats for cpu resource controller Balaji Rao
2008-03-26 19:00 ` Paul Menage
2008-03-26 19:58 ` Peter Zijlstra
2008-03-28 10:02 ` Balaji Rao
2008-03-28 10:17 ` Peter Zijlstra
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