From: Con Kolivas <kernel@kolivas.org>
To: linux-kernel@vger.kernel.org
Cc: "Haar János" <djani22@netcenter.hu>,
"Nick Piggin" <nickpiggin@yahoo.com.au>,
cw@f00f.org
Subject: Re: swapper: page allocation failure.
Date: Mon, 22 May 2006 21:17:26 +1000 [thread overview]
Message-ID: <200605222117.27433.kernel@kolivas.org> (raw)
In-Reply-To: <00d201c67d73$220d5d10$1800a8c0@dcccs>
On Monday 22 May 2006 17:41, Haar János wrote:
> ----- Original Message -----
> From: "Nick Piggin" <nickpiggin@yahoo.com.au>
> > Yeah, as I said, block device's pagecache (aka buffercache) can't
> > use highmem. If nbd can export regular files as block devices, or
> > you use loop devices from regular files, that might help (or slow
> > things down :P).
>
> Hmm.
> That sounds bad.
> I think, if highmem is unreachable some times that makes lowmem more
> valuable!
> The kernel needs to keep (reserve) it free as much as possible.
> The buffer-cache is an unimportant thing next to keeping lowmem free, but
> it is blocks the performance and wastes the systems resources!
>
> It is possible any workaround?
Try with one of the alternative vmsplit options that gives you more lowmem?
That might break certain applications though.
--
-ck
next prev parent reply other threads:[~2006-05-22 11:18 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-21 8:10 swapper: page allocation failure Haar János
2006-05-21 8:16 ` Chris Wedgwood
2006-05-21 8:37 ` Haar János
2006-05-21 8:47 ` Chris Wedgwood
2006-05-21 9:03 ` Haar János
2006-05-21 9:10 ` Chris Wedgwood
2006-05-21 9:31 ` Haar János
2006-05-21 10:24 ` Chris Wedgwood
2006-05-21 10:42 ` Haar János
2006-05-21 10:26 ` Chris Wedgwood
2006-05-21 10:45 ` Haar János
2006-05-21 12:01 ` Nick Piggin
2006-05-21 13:58 ` Haar János
2006-05-22 0:09 ` Nick Piggin
2006-05-22 7:41 ` Haar János
2006-05-22 11:17 ` Con Kolivas [this message]
2006-05-22 15:08 ` Haar János
2006-05-22 15:12 ` Con Kolivas
2006-05-22 21:06 ` swapper: page allocation failure. - random reboot problem Haar János
2006-05-23 9:17 ` Nick Piggin
2006-05-23 10:16 ` Haar János
2006-05-23 10:24 ` Nick Piggin
2006-05-23 10:31 ` Haar János
2006-05-23 10:45 ` Nick Piggin
2006-05-23 11:01 ` Haar János
2006-05-21 9:23 ` swapper: page allocation failure Haar János
2006-05-21 12:03 ` Andrew Morton
2006-05-21 14:01 ` Haar János
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