From: Marcelo Tosatti <marcelo@conectiva.com.br>
To: Mike Galbraith <mikeg@wen-online.de>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Linux 2.4.5-ac15
Date: Fri, 22 Jun 2001 06:57:56 -0300 (BRT) [thread overview]
Message-ID: <Pine.LNX.4.21.0106220655450.933-100000@freak.distro.conectiva> (raw)
In-Reply-To: <Pine.LNX.4.33.0106221043360.226-100000@mikeg.weiden.de>
On Fri, 22 Jun 2001, Mike Galbraith wrote:
> On Thu, 21 Jun 2001, Marcelo Tosatti wrote:
>
> > On Thu, 21 Jun 2001, Mike Galbraith wrote:
> >
> > > On Thu, 21 Jun 2001, Marcelo Tosatti wrote:
> > >
> > > > > 2 4 2 77084 1524 18396 66904 0 1876 108 2220 2464 66079 198 1
> > > ^^^^^
> > > > Ok, I suspect that GFP_BUFFER allocations are fucking up here (they can't
> > > > block on IO, so they loop insanely).
> > >
> > > Why doesn't the VM hang the syncing of queued IO on these guys via
> > > wait_event or such instead of trying to just let the allocation fail?
> ...
> > > Does failing the allocation in fact accomplish more than what I'm
> > > (uhoh:) assuming?
> >
> > No.
>
> hmm..
>
> Jun 18 07:11:36 kernel: reclaim_page: salvaged ref:1 age:0 buf:0 cnt:1
> Jun 18 07:11:36 last message repeated 27 times
>
> One thing that _could_ be done about looping allocations is to steal
> a page from the clean list ignoring PageReferenced (if you have any).
> That would be a very expensive 'rob Peter to pay Paul' trade though.
Don't like it.
This goes against the aging logic.
next prev parent reply other threads:[~2001-06-22 11:32 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-15 22:06 Linux 2.4.5-ac15 Alan Cox
2001-06-16 16:48 ` Tom Vier
2001-06-17 18:11 ` Walter Hofmann
2001-06-19 9:19 ` Walter Hofmann
2001-06-20 19:25 ` Adam Sampson
2001-06-19 21:23 ` Walter Hofmann
2001-06-20 19:56 ` Rik van Riel
2001-06-21 15:22 ` Walter Hofmann
2001-06-21 4:35 ` Marcelo Tosatti
2001-06-21 6:56 ` Mike Galbraith
2001-06-21 5:44 ` Marcelo Tosatti
2001-06-21 8:10 ` Mike Galbraith
2001-06-21 13:14 ` Daniel Phillips
2001-06-21 19:50 ` Marcelo Tosatti
2001-06-22 0:32 ` Daniel Phillips
2001-06-22 9:06 ` Mike Galbraith
2001-06-22 9:57 ` Marcelo Tosatti [this message]
2001-06-22 11:50 ` Mike Galbraith
2001-06-22 14:08 ` Linux 2.4.5-ac15 / 2.4.6-pre5 Walter Hofmann
2001-06-22 15:50 ` Mike Galbraith
2001-06-22 17:27 ` Walter Hofmann
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