From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx204.postini.com [74.125.245.204]) by kanga.kvack.org (Postfix) with SMTP id D01E96B007D for ; Thu, 6 Dec 2012 08:52:02 -0500 (EST) Message-ID: <50C0A2EF.6010404@redhat.com> Date: Thu, 06 Dec 2012 14:51:43 +0100 From: Zdenek Kabelac MIME-Version: 1.0 Subject: Re: kswapd craziness in 3.7 References: <1354049315-12874-1-git-send-email-hannes@cmpxchg.org> <20121128094511.GS8218@suse.de> <50BCC3E3.40804@redhat.com> <20121203191858.GY24381@cmpxchg.org> <50BDBCD9.9060509@redhat.com> In-Reply-To: <50BDBCD9.9060509@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner Cc: Mel Gorman , Andrew Morton , Rik van Riel , George Spelvin , Johannes Hirte , Thorsten Leemhuis , Tomas Racek , Jan Kara , Dave Hansen , Josh Boyer , Valdis.Kletnieks@vt.edu, Jiri Slaby , Bruno Wolff III , Linus Torvalds , linux-mm@kvack.org, linux-kernel@vger.kernel.org Dne 4.12.2012 10:05, Zdenek Kabelac napsal(a): > Dne 3.12.2012 20:18, Johannes Weiner napsal(a): >> Szia Zdenek, >> >> On Mon, Dec 03, 2012 at 04:23:15PM +0100, Zdenek Kabelac wrote: >>> Ok, bad news - I've been hit by kswapd0 loop again - >>> my kernel git commit cc19528bd3084c3c2d870b31a3578da8c69952f3 again >>> shown kswapd0 for couple minutes on CPU. >>> >>> It seemed to go instantly away when I've drop caches >>> (echo 3 >/proc/sys/vm/drop_cache) >>> (After that I've had over 1G free memory) >> >> Any chance you could retry with this patch on top? >> >> --- >> From: Johannes Weiner >> Subject: [patch] mm: vmscan: do not keep kswapd looping forever due >> to individual uncompactable zones >> >> --- >> mm/vmscan.c | 16 ---------------- >> 1 file changed, 16 deletions(-) >> >> diff --git a/mm/vmscan.c b/mm/vmscan.c > > > Ok, I'm running now b69f0859dc8e633c5d8c06845811588fe17e68b3 (-rc8) > with your patch. I'll be able to give some feedback after couple > days (if I keep my machine running without reboot - since before So to just give some positive info - with 2 1/2 day uptime, several suspend/resumes, ff at 1.4GB I still have just 29 seconds for kswapd0 process. So the patch above might have helped - but I'll look for a few more days. Zdenek -- 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