From: Andrew Clayton <andrew@sol-1.demon.co.uk>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Nuno Monteiro <nuno@itsari.org>,
linux-kernel@vger.kernel.org, jmarcet@pobox.com,
jamagallon@able.es, khromy@lnuxlab.ath.cx, conman@kolivas.net
Subject: Re: Exaggerated swap usage
Date: 02 Dec 2002 21:24:52 +0000 [thread overview]
Message-ID: <1038864295.841.3.camel@delta.digital-domain.net> (raw)
In-Reply-To: <20021202002108.GQ28164@dualathlon.random>
On Mon, 2002-12-02 at 00:21, Andrea Arcangeli wrote:
> On Sun, Dec 01, 2002 at 02:37:13PM +0000, Nuno Monteiro wrote:
> >
> > Trace; c0117114 <__run_task_queue+4c/60>
> > Trace; c011e0e9 <context_thread+11d/19c>
> > Trace; c010588c <kernel_thread+28/38>
>
> ok, now it's clear what the problem is. there are inuse-dirty inodes
> that triggers a deadlock in the schedule-capable
> try_to_sync_unused_inodes of 2.4.20rc2aa1 (that avoided me to backout an
> otherwise corrupt lowlatency fix). It can trigger only in UP,
> in SMP the other cpu can always run kupdate that will flush all dirty
> inodes, so it would lockup one cpu as worse for 2.5 sec, this is
> probably why I couldn't reproduce it, I assume all of you reproducing
> the deadlock were running on an UP machine (doesn't matter if the kernel
Correct (for me anyways).
> was compiled for SMP or not).
>
> Can you give a spin to this untested incremental fix?
>
Yep, this also works for me.
> thanks,
>
> Andrea
Cheers, (excellent work)
Andrew Clayton
next prev parent reply other threads:[~2002-12-02 21:18 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-29 11:54 Javier Marcet
2002-11-29 12:20 ` Christer Nilsson
2002-11-29 16:31 ` Rik van Riel
2002-11-30 1:38 ` Javier Marcet
2002-11-30 1:55 ` Rik van Riel
2002-11-30 2:47 ` Zwane Mwaikambo
2002-11-30 5:17 ` Javier Marcet
2002-11-30 14:02 ` Exaggerated swap usage && -aa lockup Javier Marcet
2002-11-30 2:42 ` Exaggerated swap usage Zwane Mwaikambo
2002-11-30 3:02 ` Andrew Morton
2002-11-30 4:12 ` Zwane Mwaikambo
2002-11-30 6:48 ` khromy
2002-11-30 6:49 ` Javier Marcet
2002-11-30 7:08 ` Dmitri
2002-11-30 14:05 ` Javier Marcet
2002-11-30 18:23 ` khromy
2002-11-30 18:43 ` Andrea Arcangeli
2002-12-01 7:39 ` Javier Marcet
2002-12-01 7:53 ` Javier Marcet
2002-12-01 10:34 ` Andrea Arcangeli
2002-12-01 7:59 ` Javier Marcet
2002-12-01 10:36 ` Andrea Arcangeli
2002-12-01 14:37 ` Nuno Monteiro
2002-12-02 0:21 ` Andrea Arcangeli
2002-12-02 1:01 ` Nuno Monteiro
2002-12-02 4:55 ` Javier Marcet
2002-12-02 21:24 ` Andrew Clayton [this message]
2002-11-30 14:05 ` Steffen Moser
2002-11-30 18:22 ` Rik van Riel
2002-12-01 7:57 ` Javier Marcet
2002-12-01 19:27 ` Rik van Riel
2002-11-29 15:28 Randal, Phil
2002-11-29 16:28 ` Rik van Riel
2002-12-02 23:59 Marc-Christian Petersen
2002-12-03 0:59 ` Andrea Arcangeli
2002-12-03 10:13 ` Marc-Christian Petersen
2002-12-03 13:59 ` Andrea Arcangeli
2002-12-03 18:43 ` Marc-Christian Petersen
2002-12-05 23:14 ` Marc-Christian Petersen
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