From: Pete Zaitcev <zaitcev@redhat.com>
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: David Miller <davem@davemloft.net>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
zaitcev@redhat.com
Subject: Re: X or AF_UNIX and order 3 allocation
Date: Wed, 16 Apr 2008 09:59:38 -0700 [thread overview]
Message-ID: <20080416095938.66d798e4.zaitcev@redhat.com> (raw)
In-Reply-To: <20080416085213.1e55bd1e@extreme>
On Wed, 16 Apr 2008 08:52:13 -0700, Stephen Hemminger <shemminger@vyatta.com> wrote:
> > > Not sure if the problem is caused by X or kernel, but this is what
> >
> > It seems to be the b44 driver doing a large huge order allocation.
> >
> > That driver only asks for (1536 + 30 + 64) bytes, so I suppose part of
> > the problem is that SLAB is using an order 3 allocation to satisfy
> > that.
> The chip needs memory below 1G for DMA, perhaps low memory is getting
> exhausted.
The failure corresponds to memory pressure (from yum), but the real issue
is the lack of order 3 areas. We're talking a 32KB chunk! Why would anyone
need that much? Crazy!
Apr 13 18:19:14 niphredil kernel: Xorg: page allocation failure. order:3, mode:0x4020
I blame SLUB. Things like the above never happened with SLAB.
-- Pete
next prev parent reply other threads:[~2008-04-16 16:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-16 4:10 X or AF_UNIX and order 3 allocation Pete Zaitcev
2008-04-16 4:51 ` David Miller
2008-04-16 15:52 ` Stephen Hemminger
2008-04-16 16:59 ` Pete Zaitcev [this message]
2008-04-27 16:48 ` [ipw2100, b44] " Pekka Pietikainen
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