From: Oliver Neukum <oliver@neukum.org>
To: Con Kolivas <kernel@kolivas.org>, Andrew Morton <akpm@osdl.org>
Cc: piggin@cyberone.com.au, linux-kernel@vger.kernel.org,
mingo@elte.hu, felipe_alfaro@linuxmail.org
Subject: Re: [PATCH] O13int for interactivity
Date: Tue, 5 Aug 2003 10:12:12 +0200 [thread overview]
Message-ID: <200308051012.12951.oliver@neukum.org> (raw)
In-Reply-To: <200308051726.14501.kernel@kolivas.org>
Am Dienstag, 5. August 2003 09:26 schrieb Con Kolivas:
> On Tue, 5 Aug 2003 16:03, Andrew Morton wrote:
> > We do prefer that TASK_UNINTERRUPTIBLE processes are woken promptly so they
> > can submit more IO and go back to sleep. Remember that we are artificially
> > leaving the disk head idle in the expectation that the task will submit
> > more I/O. It's pretty sad if the CPU scheduler leaves the anticipated task
> > in the doldrums for five milliseconds.
>
> Indeed that has been on my mind. This change doesn't affect how long it takes
> to wake up. It simply prevents tasks from getting full interactive status
> during the period they are doing unint. sleep.
If you take that to its logical conclusion, such tasks should be woken
immediately. Likewise, the io scheduler should be notified when you know
that the task won't do io or will do other io, like waiting on character
devices, go paging out or terminate.
Regards
Oliver
next prev parent reply other threads:[~2003-08-05 8:12 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-04 16:07 [PATCH] O13int for interactivity Con Kolivas
2003-08-04 18:24 ` Felipe Alfaro Solana
2003-08-04 19:15 ` Antonio Vargas
2003-08-04 21:32 ` Con Kolivas
2003-08-04 20:11 ` Mike Galbraith
2003-08-04 22:11 ` Con Kolivas
2003-08-05 7:10 ` Mike Galbraith
2003-08-05 2:11 ` Nick Piggin
2003-08-05 2:20 ` Con Kolivas
2003-08-05 2:21 ` Nick Piggin
2003-08-05 3:06 ` Con Kolivas
2003-08-05 3:17 ` Nick Piggin
2003-08-06 18:48 ` Interactivity improvements Timothy Miller
2003-08-06 19:01 ` Mike Fedyk
2003-08-06 20:09 ` Helge Hafting
2003-08-06 21:15 ` Con Kolivas
2003-08-05 3:18 ` [PATCH] O13int for interactivity Con Kolivas
2003-08-05 3:31 ` Nick Piggin
2003-08-05 5:04 ` Con Kolivas
2003-08-05 5:12 ` Nick Piggin
2003-08-05 5:16 ` Con Kolivas
2003-08-05 5:28 ` Nick Piggin
2003-08-05 10:22 ` Con Kolivas
2003-08-05 10:32 ` Nick Piggin
2003-08-05 10:45 ` Con Kolivas
2003-08-05 10:48 ` Nick Piggin
2003-08-05 10:56 ` Con Kolivas
2003-08-05 11:03 ` Nick Piggin
2003-08-05 11:12 ` Con Kolivas
2003-08-05 11:23 ` Nick Piggin
2003-08-05 11:34 ` Con Kolivas
2003-08-05 10:54 ` Arjan van de Ven
2003-08-05 11:10 ` Con Kolivas
2003-08-06 21:33 ` Timothy Miller
2003-08-06 21:33 ` Con Kolivas
2003-08-07 0:27 ` Timothy Miller
2003-08-07 0:27 ` Con Kolivas
2003-08-07 0:44 ` Timothy Miller
2003-08-11 6:48 ` Rob Landley
2003-08-11 15:47 ` William Lee Irwin III
2003-08-12 2:51 ` Nick Piggin
2003-08-12 6:16 ` Mike Galbraith
2003-08-12 7:07 ` Nick Piggin
2003-08-12 7:18 ` Nick Piggin
2003-08-12 9:42 ` Mike Galbraith
2003-08-12 21:11 ` Mike Fedyk
2003-08-13 6:55 ` Mike Galbraith
2003-08-12 9:22 ` Mike Galbraith
2003-08-12 9:37 ` Nick Piggin
2003-08-12 9:48 ` Mike Galbraith
2003-08-12 10:29 ` Rob Landley
2003-08-12 11:08 ` Nick Piggin
2003-08-12 11:35 ` Rob Landley
2003-08-12 11:58 ` Nick Piggin
2003-08-13 2:08 ` jw schultz
2003-08-13 3:07 ` Gene Heskett
2003-08-13 3:24 ` Nick Piggin
2003-08-13 5:24 ` Gene Heskett
2003-08-13 5:43 ` Andrew McGregor
2003-08-13 12:33 ` Gene Heskett
2003-08-14 5:03 ` Andrew McGregor
2003-08-14 10:48 ` Gene Heskett
2003-08-12 15:36 ` Timothy Miller
2003-08-05 6:03 ` Andrew Morton
2003-08-05 7:26 ` Con Kolivas
2003-08-05 8:12 ` Oliver Neukum [this message]
2003-08-05 8:20 ` Con Kolivas
2003-08-05 8:27 ` Mike Galbraith
2003-08-05 8:43 ` Con Kolivas
2003-08-05 9:09 ` Mike Galbraith
2003-08-05 9:19 ` Con Kolivas
2003-08-05 10:04 ` Nick Piggin
2003-08-11 6:57 ` Rob Landley
2003-08-11 15:58 ` William Lee Irwin III
2003-08-05 7:53 ` Mike Galbraith
[not found] <gQ4n.5oS.7@gated-at.bofh.it>
[not found] ` <jUl6.5eh.1@gated-at.bofh.it>
[not found] ` <jUuT.5kZ.15@gated-at.bofh.it>
[not found] ` <jWn1.6K1.11@gated-at.bofh.it>
2003-08-13 13:48 ` Pascal Schmidt
2003-08-13 14:50 ` Gene Heskett
-- strict thread matches above, loose matches on Subject: below --
2003-08-06 10:35 Voluspa
2003-08-04 19:12 Voluspa
2003-07-27 15:12 [PATCH] O10int " Con Kolivas
2003-07-28 18:08 ` Valdis.Kletnieks
2003-07-28 18:40 ` Andrew Morton
2003-08-04 18:51 ` [PATCH] O13int " Felipe Alfaro Solana
2003-08-04 18:58 ` Felipe Alfaro Solana
2003-08-04 21:46 ` Con Kolivas
2003-08-04 22:16 ` Felipe Alfaro Solana
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