From: Kirill Korotaev <dev@openvz.org>
To: Peter Williams <pwil3058@bigpond.net.au>
Cc: balbir@in.ibm.com, Mike Galbraith <efault@gmx.de>,
Con Kolivas <kernel@kolivas.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Kingsley Cheung <kingsley@aurema.com>,
Ingo Molnar <mingo@elte.hu>,
Rene Herman <rene.herman@keyaccess.nl>
Subject: Re: [RFC 2/5] sched: Add CPU rate soft caps
Date: Wed, 31 May 2006 17:17:15 +0400 [thread overview]
Message-ID: <447D975B.3070700@openvz.org> (raw)
In-Reply-To: <447A31DE.3060601@bigpond.net.au>
>> I understand that, I was talking about fairness between capped tasks
>> and what might be considered fair or intutive between capped tasks and
>> regular tasks. Of course, the last point is debatable ;)
>
>
> Well, the primary fairness mechanism in the scheduler is the time slice
> allocation and the capping code doesn't fiddle with those so there
> should be a reasonable degree of fairness (taking into account "nice")
> between capped tasks. To improve that would require allocating several
> new priority slots for use by tasks exceeding their caps and fiddling
> with those. I don't think that it's worth the bother.
I suppose it should be handled still. a subjective feeling :)
BTW, do you have any test results for your patch?
It would be interesting to see how precise these limitations are and
whether or not we should bother for the above...
Kirill
next prev parent reply other threads:[~2006-05-31 13:19 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-26 4:20 [RFC 0/5] sched: Add CPU rate caps Peter Williams
2006-05-26 4:20 ` [RFC 1/5] sched: Fix priority inheritence before CPU rate soft caps Peter Williams
2006-05-26 4:20 ` [RFC 2/5] sched: Add " Peter Williams
2006-05-26 10:48 ` Con Kolivas
2006-05-26 11:15 ` Mike Galbraith
2006-05-26 11:17 ` Con Kolivas
2006-05-26 11:30 ` Mike Galbraith
2006-05-26 13:55 ` Peter Williams
2006-05-27 6:31 ` Balbir Singh
2006-05-27 7:03 ` Peter Williams
2006-05-28 0:11 ` Peter Williams
2006-05-28 7:38 ` Balbir Singh
2006-05-28 13:35 ` Peter Williams
2006-05-28 14:42 ` Balbir Singh
2006-05-28 23:27 ` Peter Williams
2006-05-31 13:17 ` Kirill Korotaev [this message]
2006-05-31 23:39 ` Peter Williams
2006-06-01 8:09 ` Kirill Korotaev
2006-06-01 23:38 ` Peter Williams
2006-06-02 1:35 ` Peter Williams
2006-05-26 4:20 ` [RFC 3/5] sched: Add CPU rate hard caps Peter Williams
2006-05-26 6:58 ` Kari Hurtta
2006-05-27 1:00 ` Peter Williams
2006-05-26 11:00 ` Con Kolivas
2006-05-26 13:59 ` Peter Williams
2006-05-26 14:12 ` Con Kolivas
2006-05-26 14:23 ` Mike Galbraith
2006-05-27 0:16 ` Peter Williams
2006-05-27 9:28 ` Mike Galbraith
2006-05-28 2:09 ` Peter Williams
2006-05-27 6:48 ` Balbir Singh
2006-05-27 8:44 ` Peter Williams
2006-05-31 13:10 ` Kirill Korotaev
2006-05-31 15:59 ` Balbir Singh
2006-05-31 18:09 ` Mike Galbraith
2006-06-01 7:41 ` Kirill Korotaev
2006-06-01 8:34 ` Balbir Singh
2006-06-01 18:43 ` [ckrm-tech] " Chandra Seetharaman
2006-06-01 23:26 ` Peter Williams
2006-06-02 2:02 ` Chandra Seetharaman
2006-06-02 3:21 ` Peter Williams
2006-06-02 8:32 ` Balbir Singh
2006-06-02 13:30 ` Peter Williams
2006-06-02 18:58 ` Balbir Singh
2006-06-02 23:49 ` Peter Williams
2006-06-03 4:59 ` Balbir Singh
2006-06-02 19:06 ` Chandra Seetharaman
2006-06-03 0:04 ` Peter Williams
2006-06-02 0:36 ` Con Kolivas
2006-06-02 2:03 ` [ckrm-tech] " Chandra Seetharaman
2006-06-02 5:55 ` [ckrm-tech] [RFC 3/5] " Peter Williams
2006-06-02 7:47 ` Kirill Korotaev
2006-06-02 13:34 ` Peter Williams
2006-06-05 22:11 ` Sam Vilain
2006-06-06 8:24 ` Kirill Korotaev
2006-06-06 9:13 ` Con Kolivas
2006-06-06 9:28 ` Kirill Korotaev
2006-06-02 8:46 ` Mike Galbraith
2006-06-02 13:18 ` Peter Williams
2006-06-02 14:47 ` Mike Galbraith
2006-06-03 0:08 ` Peter Williams
2006-06-03 6:02 ` Mike Galbraith
2006-06-03 11:03 ` Peter Williams
2006-06-06 11:26 ` Srivatsa Vaddagiri
2006-06-02 7:34 ` Kirill Korotaev
2006-06-02 21:23 ` Shailabh Nagar
2006-06-01 23:47 ` Sam Vilain
2006-06-01 23:43 ` Peter Williams
2006-05-31 23:28 ` Peter Williams
2006-06-01 7:44 ` Kirill Korotaev
2006-06-01 23:21 ` Peter Williams
2006-05-26 4:21 ` [RFC 4/5] sched: Add procfs interface for CPU rate soft caps Peter Williams
2006-05-26 4:21 ` [RFC 5/5] sched: Add procfs interface for CPU rate hard caps Peter Williams
2006-05-26 8:04 ` [RFC 0/5] sched: Add CPU rate caps Mike Galbraith
2006-05-26 16:11 ` Björn Steinbrink
2006-05-28 22:46 ` Sam Vilain
2006-05-28 23:30 ` Peter Williams
2006-05-29 3:09 ` Sam Vilain
2006-05-29 3:41 ` Peter Williams
2006-05-29 21:16 ` Sam Vilain
2006-05-29 23:12 ` Peter Williams
2006-05-30 2:07 ` Sam Vilain
2006-05-30 2:45 ` Peter Williams
2006-05-30 22:05 ` Sam Vilain
2006-05-30 23:22 ` Peter Williams
2006-05-30 23:25 ` Peter Williams
2006-06-05 23:56 ` Peter Williams
2006-05-27 0:16 ` Peter Williams
2006-05-26 10:41 ` Con Kolivas
2006-05-27 1:28 ` Peter Williams
2006-05-27 1:42 ` Con Kolivas
2006-05-26 11:09 ` Con Kolivas
2006-05-26 14:00 ` Peter Williams
2006-05-26 11:29 ` Balbir Singh
2006-05-27 1:40 ` Peter Williams
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