From: Andrew Morton <akpm@osdl.org>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: nickpiggin@yahoo.com.au, petero2@telia.com, linux-kernel@vger.kernel.org
Subject: Re: Can't make use of swap memory in 2.6.7-bk19
Date: Thu, 8 Jul 2004 21:51:28 -0700 [thread overview]
Message-ID: <20040708215128.3eefda8b.akpm@osdl.org> (raw)
In-Reply-To: <20040709025046.GU21066@holomorphy.com>
William Lee Irwin III <wli@holomorphy.com> wrote:
>
> William Lee Irwin III <wli@holomorphy.com> wrote:
> >> Enumerate those more basic things.
>
> On Thu, Jul 08, 2004 at 07:12:54PM -0700, Andrew Morton wrote:
> > 1: work out why it's prematurely calling out_of_memory() when laptop_mode=1.
>
> The obvious difference in writeback policy.
The writeback code isn't in the picture with this workload - there's no
dirty pagecache around.
> I've apparently touched on policy, and paid for that mistake with an
> overpoweringly Sterculian whiff of penguins. Now backing away slowly...
Not sure what that means.
The problem is trivial to reproduce. Killing these lines in shrink_list():
if (laptop_mode && !sc->may_writepage)
goto keep_locked;
makes it go away. Something's out of whack in there, and the removal of
the free swapspace test exposed some prior problem. I'll poke at it some
more.
next prev parent reply other threads:[~2004-07-09 4:52 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-08 1:36 Can't make use of swap memory in 2.6.7-bk19 Peter Osterlund
2004-07-08 1:43 ` William Lee Irwin III
2004-07-08 2:14 ` Nick Piggin
2004-07-08 2:30 ` William Lee Irwin III
2004-07-08 12:59 ` Peter Osterlund
2004-07-08 19:39 ` William Lee Irwin III
2004-07-09 0:57 ` Nick Piggin
2004-07-09 1:53 ` William Lee Irwin III
2004-07-09 2:06 ` Nick Piggin
2004-07-09 2:09 ` William Lee Irwin III
2004-07-09 2:12 ` Andrew Morton
2004-07-09 2:50 ` William Lee Irwin III
2004-07-09 4:51 ` Andrew Morton [this message]
2004-07-09 2:14 ` Nick Piggin
2004-07-08 8:12 ` Peter Osterlund
2004-07-08 8:20 ` Andrew Morton
2004-07-08 8:23 ` Nick Piggin
2004-07-08 9:30 ` Peter Osterlund
2004-07-14 5:20 ` William Lee Irwin III
2004-07-14 10:39 ` Peter Osterlund
2004-07-14 10:57 ` William Lee Irwin III
2004-07-14 12:55 ` Peter Osterlund
2004-07-14 13:22 ` William Lee Irwin III
2004-07-14 20:00 ` Peter Osterlund
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