From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Rik van Riel <riel@redhat.com>
Cc: Con Kolivas <kernel@kolivas.org>,
Mikhail Ramendik <mr@ramendik.ru>, Andrew Morton <akpm@digeo.com>,
lista4@comhem.se, linux-kernel@vger.kernel.org
Subject: Re: 2.6.10-rc3: kswapd eats CPU on start of memory-eating task
Date: Mon, 20 Dec 2004 15:33:45 +1100 [thread overview]
Message-ID: <1103517225.5093.12.camel@npiggin-nld.site> (raw)
In-Reply-To: <Pine.LNX.4.61.0412192220450.4315@chimarrao.boston.redhat.com>
On Sun, 2004-12-19 at 22:21 -0500, Rik van Riel wrote:
> On Mon, 20 Dec 2004, Con Kolivas wrote:
>
> > I still suspect the thrash token patch even with the swap token timeout
> > at 0. Is it completely disabled at 0 or does it still do something?
>
> It makes it harder to page out pages from the task holding the
> token. I wonder if kswapd should try to steal the token away
> from the task holding it, so in effect nobody holds the token
> when the system isn't under a heavy swapping load.
>
In that case, the first thing we need to do is disable thrash token
completely, and retest that. We still don't know for sure that it is
the problem.
I don't have the code in front of me at the moment, but I'll be able
to send a patch to do that in a couple of hours, if nobody beats me
to it.
Nick
next prev parent reply other threads:[~2004-12-20 4:33 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-19 22:40 Voluspa
2004-12-19 22:56 ` Nick Piggin
2004-12-19 23:08 ` Mikhail Ramendik
2004-12-19 23:57 ` Andrew Morton
2004-12-20 0:03 ` Mikhail Ramendik
2004-12-20 3:02 ` Con Kolivas
2004-12-20 3:21 ` Rik van Riel
2004-12-20 4:13 ` Con Kolivas
2004-12-20 4:18 ` Rik van Riel
2004-12-20 4:21 ` Con Kolivas
2004-12-20 4:33 ` Nick Piggin [this message]
2004-12-20 7:07 ` Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2004-12-23 0:26 Zou, Nanhai
2004-12-23 13:26 ` Rik van Riel
2004-12-23 13:28 ` Rik van Riel
2004-12-22 8:45 Zou, Nanhai
2004-12-22 14:23 ` Rik van Riel
2004-12-20 12:59 Voluspa
2004-12-21 1:46 ` Mikhail Ramendik
2004-12-20 9:22 Zou, Nanhai
2004-12-20 15:08 ` Rik van Riel
2004-12-20 6:51 Voluspa
2004-12-20 7:12 ` Andrew Morton
2004-12-20 7:44 ` Nick Piggin
2004-12-20 8:03 ` Con Kolivas
2004-12-20 8:58 ` Con Kolivas
2004-12-20 12:55 ` Andrea Arcangeli
2004-12-20 12:06 ` Ed Tomlinson
2004-12-20 12:29 ` Con Kolivas
2004-12-20 17:49 ` Hideo AOKI
2004-12-20 23:51 ` Nick Piggin
2004-12-20 9:07 ` mr
2004-12-20 15:06 ` Rik van Riel
2004-12-19 23:12 Voluspa
2004-12-19 14:08 Voluspa
2004-12-17 10:45 Voluspa
2004-12-18 23:02 ` Con Kolivas
2004-12-15 22:49 Voluspa
2004-12-16 8:03 ` Nick Piggin
2004-12-16 8:14 ` Nick Piggin
2004-12-15 14:02 Voluspa
2004-12-17 0:41 ` Andrew Morton
2004-12-14 7:24 Voluspa
2004-12-12 14:28 Mikhail Ramendik
2004-12-14 0:51 ` Nick Piggin
2004-12-14 2:28 ` Mikhail Ramendik
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