From: German Gomez Garcia <german@piraos.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Mailing List Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Strange behaviour of swap under 2.4.5-ac15
Date: Mon, 18 Jun 2001 15:17:31 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.33.0106181500480.270-100000@hal9000.piraos.com> (raw)
In-Reply-To: <20010618143559.A23006@athlon.random>
On Mon, 18 Jun 2001, Andrea Arcangeli wrote:
> On Mon, Jun 18, 2001 at 12:14:01PM +0200, German Gomez Garcia wrote:
> > Hello,
> >
> > I've running 2.4.5-ac15 for almost a day (22 hours) and I found
> > some strange behaviour of the kswap, at least it was not present in
> > 2.4.5-ac9. The swap memory increase with time as the cache dedicated
> > memory also increase, that is swapping process at a very fast rate, even
> > when no program is getting more memory. Is that the expected behaviour?
> > An example, with no process running (just the usual daemons and
> > none of them getting extra memory) the command:
> >
> > free ; sleep 60; free
> >
> > total used free shared buffers cached
> > Mem: 513416 393184 120232 364 63276 254576
> > -/+ buffers/cache: 75332 438084
> > Swap: 530104 14228 515876
> >
> > total used free shared buffers cached
> > Mem: 513416 393192 120224 364 63276 258412
> > -/+ buffers/cache: 71504 441912
> > Swap: 530104 18064 512040
> >
> > Any idea?
>
> either apply this patch to 2.4.5ac15:
>
> ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.5aa3/00_fix-unusable-vm-on-alpha-1
>
> (note it is not an alpha specific bug, it's just that I was triggering
> all the time on alpha so I called the patch that way)
It doesn't fix it, swapped memory and cache memory increase at a
rate of about 40K/s, swapping process very fast, even the "agetty"
processes get 64 out of 68 K swapped one or two minutes after booting.
This rate gets lower as nothing but the essential (4K of "agetty", etc) is
left in the physical memory.
> or better use 2.4.6pre3aa1:
>
> ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.6pre3aa1.bz2
I'll test this later as I cannot reboot the machine right now.
Just one question, is this kernel 'stable', I was running 2.4.5-ac9 for
a week without problems, even when 'stress-testing' the emu10k1 and the
mga modules.
Regards,
- german
PS: swapoff -a fixes the problem :-)
-------------------------------------------------------------------------
German Gomez Garcia | "This isn't right. This isn't even wrong."
<german@piraos.com> | -- Wolfgang Pauli
next prev parent reply other threads:[~2001-06-18 13:17 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-18 10:14 Strange behaviour of swap under 2.4.5-ac15 German Gomez Garcia
2001-06-18 12:35 ` Andrea Arcangeli
2001-06-18 13:17 ` German Gomez Garcia [this message]
2001-06-18 13:34 ` Luigi Genoni
2001-06-18 13:44 ` Andrea Arcangeli
2001-06-18 13:43 ` Rik van Riel
2001-06-18 13:56 ` Andrea Arcangeli
2001-06-18 14:54 ` Rik van Riel
2001-06-18 15:03 ` Andrea Arcangeli
2001-06-18 16:44 ` Rik van Riel
2001-06-18 17:00 ` Andrea Arcangeli
2001-06-18 13:37 ` Rik van Riel
2001-06-18 13:49 ` Andrea Arcangeli
2001-06-19 5:20 ` Mike Galbraith
[not found] <20010618174445.F1317@athlon.random>
2001-06-18 19:32 ` German Gomez Garcia
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