From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id 5BB856B0044 for ; Wed, 4 Nov 2009 17:14:37 -0500 (EST) From: Frans Pop Subject: Re: Page alloc problems with 2.6.32-rc kernels Date: Wed, 4 Nov 2009 23:14:32 +0100 References: <20091102122010.GA5552@gibson.comsick.at> <200911040114.08879.elendil@planet.nl> <20091104071750.GA19287@gibson.comsick.at> In-Reply-To: <20091104071750.GA19287@gibson.comsick.at> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Message-Id: <200911042314.35006.elendil@planet.nl> Sender: owner-linux-mm@kvack.org To: Michael Guntsche Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Mel Gorman , KOSAKI Motohiro , Pekka Enberg , Andrew Morton List-ID: On Wednesday 04 November 2009, Michael Guntsche wrote: > On 04 Nov 09 01:14, Frans Pop wrote: > > Thanks Michael. That means we now have two cases where reverting the > > congestion_wait() changes from .31-rc3 (8aa7e847d8 + 373c0a7ed3) makes > > a clear and significant difference. > > > > I wonder if more effort could/should be made on this aspect. > > As a cross check I reverted the revert here and tried to reproduce the > problem again. It is a lot harder to trigger for me now (I was not able > to reproduce it yet). I did update my local git tree though, OK. Can you tell us a bit more about your setup: =2D how much RAM does the system have? =2D what's so special about mutt in your case that it triggers these errors? - do you maybe have a huge mailbox, so mutt uses a lot of memory? - does starting/use mutt cause swapping when you see the errors? =2D do you use disk encryption at all? - if you do, what is encrypted: the file system, swap, both? =46rom your first mail it does look as if you had little free memory and th= at=20 swap was in use. > can you reproduce this problem on your side with current git? Yes I can, but my test case is somewhat special as it forces a huge amount= =20 of swapping. It does look as if your problem may also be related to=20 swapping activity. Cheers, =46JP -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org