From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with SMTP id E4962900225 for ; Fri, 24 Jun 2011 08:51:36 -0400 (EDT) Date: Fri, 24 Jun 2011 13:51:31 +0100 From: Mel Gorman Subject: Re: Root-causing kswapd spinning on Sandy Bridge laptops? Message-ID: <20110624125131.GQ9396@suse.de> References: <4E0465D8.3080005@draigBrady.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4E0465D8.3080005@draigBrady.com> Sender: owner-linux-mm@kvack.org List-ID: To: P?draig Brady Cc: Minchan Kim , Andrew Lutomirski , linux-mm@kvack.org On Fri, Jun 24, 2011 at 11:24:24AM +0100, P?draig Brady wrote: > On 24/06/11 10:27, Minchan Kim wrote: > > Hi Andrew, > > > > Sorry but right now I don't have a time to dive into this. > > But it seems to be similar to the problem Mel is looking at. > > Cced him. > > > > Even, Padraig Brady seem to have a reproducible scenario. > > I will look when I have a time. > > I hope I will be back sooner or later. > > My reproducer is (I've 3GB RAM, 1.5G swap): > dd bs=1M count=3000 if=/dev/zero of=spin.test > > To stop it spinning I just have to uncache the data, > the handiest way being: > rm spin.test > > To confirm, the top of the profile I posted is: > i915_gem_object_bind_to_gtt > shrink_slab > I don't think it's an i915 bug. Another candidate fix in the other thread that Padraig started. -- Mel Gorman SUSE Labs -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org