Message-Id: <5.2.1.1.2.20030813084949.01a159d8@pop.gmx.net>
Date: Wed, 13 Aug 2003 08:55:20 +0200
To: Mike Fedyk <mfedyk@matchmail.com>
From: Mike Galbraith <efault@gmx.de>
Subject: Re: [PATCH] O13int for interactivity
Cc: Nick Piggin <piggin@cyberone.com.au>, rob@landley.net,
       Con Kolivas <kernel@kolivas.org>,
       linux kernel mailing list <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
       Felipe Alfaro Solana <felipe_alfaro@linuxmail.org>
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At 02:11 PM 8/12/2003 -0700, Mike Fedyk wrote:
>On Tue, Aug 12, 2003 at 11:42:16AM +0200, Mike Galbraith wrote:
> > At 05:18 PM 8/12/2003 +1000, Nick Piggin wrote:
> >
> > >And no, X isn't intentionally sleeping. Its being preempted which is
> > >obviously not intentional.
> >
> > Right.  Every time X wakes the gl thread, he'll lose the cpu.  Once the gl
> > thread passes X in priority, X is pretty much doomed.  (hmm... sane [hard]
> > backboost will probably prevent that)
>
>Isn't 2.4 doing exactly that for pipes and such?

At a glance, preemption appears to be primarily a matter of timeslice in 2.4.

         -Mike

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