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From: William Lee Irwin III <wli@holomorphy.com>
To: Mike Galbraith <efault@gmx.de>
Cc: Con Kolivas <kernel@kolivas.org>,
	linux kernel mailing list <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@digeo.com>
Subject: Re: 2.5.64-mm2->4 hangs on contest
Date: Mon, 10 Mar 2003 02:21:00 -0800	[thread overview]
Message-ID: <20030310102100.GD20188@holomorphy.com> (raw)
In-Reply-To: <5.2.0.9.2.20030310105217.00cd25b0@pop.gmx.net>

At 08:12 PM 3/10/2003 +1100, Con Kolivas wrote:
>> Contest uses a modified process load from irman so it exhibits similar
>> behaviour. Not sure what +12 actually tells me though :-(

On Mon, Mar 10, 2003 at 11:05:25AM +0100, Mike Galbraith wrote:
> Aha!  No wonder your symptoms look so similar.  +12 is just a magic number 
> that works... found by trusty old trial and error method.  What I wanted to 
> see was if your hang would also go away with the same magic number, or if 
> renicing with any value helped you at all.

At 08:12 PM 3/10/2003 +1100, Con Kolivas wrote:
>> My simplistic understanding is that the pipe task in process_load gets
>> constantly elevated as "interactive" by the new scheduler, and nothing else
>> ever happens.

On Mon, Mar 10, 2003 at 11:05:25AM +0100, Mike Galbraith wrote:
> Appears so.  I can make it "work" by doing a dinky (butt ugly:) tweak in 
> activate_task().

IMHO directed yields should attempt to prevent priority inversion but
not elevate priorities otherwise. I'd bug mingo about it.

-- wli

  reply	other threads:[~2003-03-10 10:11 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <5.2.0.9.2.20030310075720.00c832f8@pop.gmx.net>
2003-03-10  9:12 ` 2.5.64-mm2->4 hangs on contest Con Kolivas
2003-03-10 10:05   ` Mike Galbraith
2003-03-10 10:21     ` William Lee Irwin III [this message]
2003-03-10 10:29     ` Mike Galbraith
2003-03-10 10:27       ` Con Kolivas
2003-03-12  9:21       ` Mike Galbraith
2003-03-12 10:25         ` Con Kolivas
2003-03-12 10:37           ` Mike Galbraith
2003-03-12 11:19             ` Con Kolivas
2003-03-12 12:30               ` Mike Galbraith
2003-03-13  1:22                 ` Con Kolivas
2003-03-13  3:39                   ` Mike Galbraith
2003-03-13  4:31                     ` Mike Galbraith
2003-03-10 10:31     ` Mike Galbraith
2003-03-10 10:31       ` Con Kolivas
2003-03-10 10:43         ` Mike Galbraith
2003-03-10 10:42           ` Con Kolivas
2003-03-10 10:54             ` Mike Galbraith
     [not found] <fa.ie98jja.2hkdj6@ifi.uio.no>
     [not found] ` <fa.j59micm.1fhqe9k@ifi.uio.no>
2003-03-10 12:43   ` Ed Tomlinson
2003-03-10 12:47     ` Con Kolivas
2003-03-10 13:41     ` Mike Galbraith
2003-03-10 13:41       ` Ed Tomlinson
2003-03-10 14:12         ` Mike Galbraith
2003-03-10 14:04     ` Mike Galbraith
2003-03-10  2:29 Con Kolivas

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