From: Con Kolivas <kernel@kolivas.org>
To: Mike Galbraith <efault@gmx.de>
Cc: Peter Williams <pwil3058@bigpond.net.au>,
Helge Hafting <helgehaf@aitel.hist.no>,
Trond Myklebust <trond.myklebust@fys.uio.no>,
Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] sched: Fix adverse effects of NFS client on interactive response
Date: Sat, 7 Jan 2006 20:30:58 +1100 [thread overview]
Message-ID: <200601072030.59445.kernel@kolivas.org> (raw)
In-Reply-To: <5.2.1.1.2.20060107051229.00c42230@pop.gmx.net>
On Saturday 07 January 2006 16:27, Mike Galbraith wrote:
> > Personally, I think that all TASK_UNINTERRUPTIBLE sleeps should be
> > treated as non interactive rather than just be heavily discounted (and
> > that TASK_NONINTERACTIVE shouldn't be needed in conjunction with it) BUT
> > I may be wrong especially w.r.t. media streamers such as audio and video
> > players and the mechanisms they use to do sleeps between cpu bursts.
>
> Try it, you won't like it. When I first examined sleep_avg woes, my
> reaction was to nuke uninterruptible sleep too... boy did that ever _suck_
> :)
Glad you've seen why I put the uninterruptible sleep logic in there. In
essence this is why the NFS client interactive case is not as nice - the NFS
code doesn't do "work on behalf of" a cpu hog with the TASK_UNINTERRUPTIBLE
state. The uninterruptible sleep detection logic made a massive difference to
interactivity when cpu bound tasks do disk I/O.
Cheers,
Con
next prev parent reply other threads:[~2006-01-07 9:31 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-21 6:00 [PATCH] sched: Fix adverse effects of NFS client on interactive response Peter Williams
2005-12-21 6:09 ` Trond Myklebust
2005-12-21 6:32 ` Peter Williams
2005-12-21 13:21 ` Trond Myklebust
2005-12-21 13:36 ` Kyle Moffett
2005-12-21 13:40 ` Trond Myklebust
2005-12-22 2:26 ` Peter Williams
2005-12-22 22:08 ` Trond Myklebust
2005-12-22 22:33 ` Peter Williams
2005-12-22 22:59 ` Trond Myklebust
2005-12-23 0:02 ` Kyle Moffett
2005-12-23 0:25 ` Trond Myklebust
2005-12-23 3:06 ` Peter Williams
2005-12-23 9:39 ` Trond Myklebust
2005-12-23 10:49 ` Peter Williams
2005-12-23 12:51 ` Trond Myklebust
2005-12-23 13:36 ` Peter Williams
2006-01-02 12:09 ` Pekka Enberg
2005-12-23 19:07 ` Lee Revell
2005-12-23 21:08 ` Trond Myklebust
2005-12-23 21:17 ` Lee Revell
2005-12-23 21:23 ` Trond Myklebust
2005-12-23 22:04 ` Lee Revell
2005-12-23 22:10 ` Trond Myklebust
2005-12-21 16:10 ` Horst von Brand
2005-12-21 20:36 ` Kyle Moffett
2005-12-21 22:59 ` Peter Williams
2005-12-21 16:11 ` Ingo Molnar
2005-12-21 22:49 ` Peter Williams
2006-01-02 11:01 ` Helge Hafting
2006-01-02 23:54 ` Peter Williams
2006-01-04 1:25 ` Peter Williams
2006-01-04 9:40 ` Marcelo Tosatti
2006-01-04 12:18 ` Con Kolivas
2006-01-04 10:31 ` Marcelo Tosatti
2006-01-04 21:51 ` Peter Williams
2006-01-05 6:31 ` Mike Galbraith
2006-01-05 11:31 ` Peter Williams
2006-01-05 14:31 ` Mike Galbraith
2006-01-05 23:13 ` Peter Williams
2006-01-05 23:33 ` Con Kolivas
2006-01-06 0:02 ` Peter Williams
2006-01-06 0:08 ` Con Kolivas
2006-01-06 0:40 ` Peter Williams
2006-01-06 7:39 ` Mike Galbraith
2006-01-07 1:11 ` Peter Williams
2006-01-07 5:27 ` Mike Galbraith
2006-01-07 6:34 ` Peter Williams
2006-01-07 8:54 ` Mike Galbraith
2006-01-07 23:40 ` Peter Williams
2006-01-08 5:51 ` Mike Galbraith
2006-01-07 9:30 ` Con Kolivas [this message]
2006-01-07 10:23 ` Mike Galbraith
2006-01-07 23:31 ` Peter Williams
2006-01-08 0:38 ` Con Kolivas
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