From: Srivatsa Vaddagiri <vatsa@in.ibm.com>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
ckrm-tech@lists.sourceforge.net, Balbir Singh <balbir@in.ibm.com>,
efault@gmx.de, linux-kernel@vger.kernel.org, tingy@cs.umass.edu,
Peter Williams <pwil3058@bigpond.net.au>,
kernel@kolivas.org, tong.n.li@intel.com,
containers@lists.osdl.org, Ingo Molnar <mingo@elte.hu>,
Kirill Korotaev <dev@sw.ru>,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
Guillaume Chazarain <guichaz@yahoo.fr>
Subject: Re: [ckrm-tech] [RFC] [PATCH 0/3] Add group fairness to CFS
Date: Thu, 31 May 2007 11:18:28 +0530 [thread overview]
Message-ID: <20070531054828.GB663@in.ibm.com> (raw)
In-Reply-To: <20070531040926.GH6909@holomorphy.com>
On Wed, May 30, 2007 at 09:09:26PM -0700, William Lee Irwin III wrote:
> It's not all that tricky.
Hmm ..the fact that each task runs for a minimum of 1 tick seems to
complicate the matters to me (when doing group fairness given a single
level hierarchy). A user with 1000 (or more) tasks can be unduly
advantaged compared to another user with just 1 (or fewer) task because of this?
> The ->fair_key computations are already
> parametrized on load weights. The "task weights" here are just what
> Linux calls "load weight," so we're largely done once task weights
> are calculated.
>
> The tricky part (if any) is essentially what you've already got nailed
> down, that is, creating and manipulating the accounting objects for the
> task groups or whatever you're calling them.
--
Regards,
vatsa
next prev parent reply other threads:[~2007-05-31 5:40 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-23 16:48 [RFC] [PATCH 0/3] Add group fairness to CFS Srivatsa Vaddagiri
2007-05-23 16:51 ` [RFC] [PATCH 1/3] task_cpu(p) needs to be correct always Srivatsa Vaddagiri
2007-05-23 16:54 ` [RFC] [PATCH 2/3] Introduce two new structures - struct lrq and sched_entity Srivatsa Vaddagiri
2007-05-23 16:56 ` [RFC] [PATCH 3/3] Generalize CFS core and provide per-user fairness Srivatsa Vaddagiri
2007-05-23 18:32 ` [RFC] [PATCH 0/3] Add group fairness to CFS Ingo Molnar
2007-05-25 7:59 ` Srivatsa Vaddagiri
[not found] ` <3d8471ca0705231112rfac9cfbt9145ac2da8ec1c85@mail.gmail.com>
[not found] ` <20070523183824.GA7388@elte.hu>
[not found] ` <4654BF88.3030404@yahoo.fr>
2007-05-25 7:45 ` Srivatsa Vaddagiri
2007-05-25 8:29 ` Ingo Molnar
2007-05-25 10:56 ` Srivatsa Vaddagiri
2007-05-25 11:11 ` Ingo Molnar
2007-05-25 11:28 ` Srivatsa Vaddagiri
2007-05-25 12:05 ` Ingo Molnar
2007-05-25 12:41 ` Srivatsa Vaddagiri
2007-05-25 13:05 ` Kirill Korotaev
2007-05-25 15:34 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-05-25 16:18 ` Kirill Korotaev
2007-05-25 18:08 ` Srivatsa Vaddagiri
2007-05-26 0:17 ` Peter Williams
2007-05-26 15:41 ` William Lee Irwin III
2007-05-27 1:29 ` Peter Williams
2007-05-29 10:48 ` William Lee Irwin III
2007-05-30 0:09 ` Peter Williams
2007-05-30 2:48 ` William Lee Irwin III
2007-05-30 4:07 ` Peter Williams
2007-05-30 17:14 ` Srivatsa Vaddagiri
2007-05-30 20:13 ` William Lee Irwin III
2007-05-31 3:26 ` Srivatsa Vaddagiri
2007-05-31 4:09 ` William Lee Irwin III
2007-05-31 5:48 ` Srivatsa Vaddagiri [this message]
2007-05-31 6:36 ` William Lee Irwin III
2007-05-31 8:33 ` Srivatsa Vaddagiri
2007-05-31 8:43 ` William Lee Irwin III
2007-05-31 8:56 ` Srivatsa Vaddagiri
2007-05-31 9:15 ` William Lee Irwin III
2007-05-31 9:36 ` Srivatsa Vaddagiri
2007-05-28 17:26 ` Srivatsa Vaddagiri
2007-05-29 0:18 ` Peter Williams
2007-05-29 1:55 ` Paul Menage
2007-05-29 3:30 ` Peter Williams
2007-05-25 9:30 ` Guillaume Chazarain
[not found] ` <20070523180316.GY19966@holomorphy.com>
2007-05-25 16:14 ` Srivatsa Vaddagiri
2007-05-25 17:14 ` Li, Tong N
2007-05-28 16:39 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-05-30 0:14 ` Bill Huey
2007-05-30 2:51 ` William Lee Irwin III
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