From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx145.postini.com [74.125.245.145]) by kanga.kvack.org (Postfix) with SMTP id 6D8A96B0044 for ; Fri, 2 Nov 2012 15:45:12 -0400 (EDT) Received: by mail-ee0-f41.google.com with SMTP id c4so2533452eek.14 for ; Fri, 02 Nov 2012 12:45:10 -0700 (PDT) Message-ID: <509422C3.1000803@suse.cz> Date: Fri, 02 Nov 2012 20:45:07 +0100 From: Jiri Slaby MIME-Version: 1.0 Subject: Re: kswapd0: excessive CPU usage References: <507688CC.9000104@suse.cz> <106695.1349963080@turing-police.cc.vt.edu> <5076E700.2030909@suse.cz> <118079.1349978211@turing-police.cc.vt.edu> <50770905.5070904@suse.cz> <119175.1349979570@turing-police.cc.vt.edu> <5077434D.7080008@suse.cz> <50780F26.7070007@suse.cz> <20121012135726.GY29125@suse.de> <507BDD45.1070705@suse.cz> <20121015110937.GE29125@suse.de> <5093A3F4.8090108@redhat.com> <5093A631.5020209@suse.cz> In-Reply-To: <5093A631.5020209@suse.cz> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Zdenek Kabelac , Valdis.Kletnieks@vt.edu, Jiri Slaby , linux-mm@kvack.org, LKML , Andrew Morton On 11/02/2012 11:53 AM, Jiri Slaby wrote: > On 11/02/2012 11:44 AM, Zdenek Kabelac wrote: >>>> Yes, applying this instead of the revert fixes the issue as well. >> >> I've applied this patch on 3.7.0-rc3 kernel - and I still see excessive >> CPU usage - mainly after suspend/resume >> >> Here is just simple kswapd backtrace from running kernel: > > Yup, this is what we were seeing with the former patch only too. Try to > apply the other one too: > https://patchwork.kernel.org/patch/1673231/ > > For me I would say, it is fixed by the two patches now. I won't be able > to report later, since I'm leaving to a conference tomorrow. Damn it. It recurred right now, with both patches applied. After I started a java program which consumed some more memory. Though there are still 2 gigs free, kswap is spinning: [] __cond_resched+0x2a/0x40 [] shrink_slab+0x1c0/0x2d0 [] kswapd+0x66d/0xb60 [] kthread+0xc0/0xd0 [] ret_from_fork+0x7c/0xb0 [] 0xffffffffffffffff -- js 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/ . Don't email: email@kvack.org