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From: Mike Galbraith <efault@gmx.de>
To: Con Kolivas <kernel@kolivas.org>
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, 07 Jan 2006 11:23:50 +0100	[thread overview]
Message-ID: <5.2.1.1.2.20060107112152.00c26298@pop.gmx.net> (raw)
In-Reply-To: <200601072030.59445.kernel@kolivas.org>

At 08:30 PM 1/7/2006 +1100, Con Kolivas wrote:
>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.

Yeah, if there's one thing worse than too much preemption, it's too little 
preemption.

         -Mike


  reply	other threads:[~2006-01-07 10:24 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
2006-01-07 10:23                             ` Mike Galbraith [this message]
2006-01-07 23:31                             ` Peter Williams
2006-01-08  0:38                               ` Con Kolivas

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