From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx159.postini.com [74.125.245.159]) by kanga.kvack.org (Postfix) with SMTP id 1E2A86B005D for ; Wed, 14 Nov 2012 08:21:49 -0500 (EST) Date: Wed, 14 Nov 2012 14:21:47 +0100 From: Marc Duponcheel Subject: Re: [3.6 regression?] THP + migration/compaction livelock (I think) Message-ID: <20121114132146.GA13122@offline.be> Reply-To: Marc Duponcheel References: <20121114012234.GB8152@offline.be> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes Cc: Andy Lutomirski , Mel Gorman , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Marc Duponcheel On 2012 Nov 13, David Rientjes wrote: > On Wed, 14 Nov 2012, Marc Duponcheel wrote: > > > Hi all, please let me know if there is are patches you want me to try. > > > > FWIW time did not stand still and I run 3.6.6 now. > > Hmm, interesting since there are no core VM changes between 3.6.2, the > kernel you ran into problems with, and 3.6.6. Hi David I have not tried yet to repro #49361 on 3.6.6, but, as you say, if there are no core VM changes, I am confident I can do so just by doing # echo always > /sys/kernel/mm/transparent_hugepage/enabled I am at your disposal to test further, and, if there are patches, to try them out. Note that I only once experienced a crash for which I could not find relevant info in logs. But the hanging processes issue could always be reproduced consistently. have a nice day -- Marc Duponcheel Velodroomstraat 74 - 2600 Berchem - Belgium +32 (0)478 68.10.91 - marc@offline.be -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422885Ab2KNNVz (ORCPT ); Wed, 14 Nov 2012 08:21:55 -0500 Received: from 79.132.231.86.static.edpnet.net ([79.132.231.86]:40545 "EHLO mail.offline.be" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1422805Ab2KNNVy (ORCPT ); Wed, 14 Nov 2012 08:21:54 -0500 Date: Wed, 14 Nov 2012 14:21:47 +0100 From: Marc Duponcheel To: David Rientjes Cc: Andy Lutomirski , Mel Gorman , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Marc Duponcheel Subject: Re: [3.6 regression?] THP + migration/compaction livelock (I think) Message-ID: <20121114132146.GA13122@offline.be> Reply-To: Marc Duponcheel References: <20121114012234.GB8152@offline.be> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: OFFLINE X-uname: Linux 3.6.6-gentoo x86_64 User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2012 Nov 13, David Rientjes wrote: > On Wed, 14 Nov 2012, Marc Duponcheel wrote: > > > Hi all, please let me know if there is are patches you want me to try. > > > > FWIW time did not stand still and I run 3.6.6 now. > > Hmm, interesting since there are no core VM changes between 3.6.2, the > kernel you ran into problems with, and 3.6.6. Hi David I have not tried yet to repro #49361 on 3.6.6, but, as you say, if there are no core VM changes, I am confident I can do so just by doing # echo always > /sys/kernel/mm/transparent_hugepage/enabled I am at your disposal to test further, and, if there are patches, to try them out. Note that I only once experienced a crash for which I could not find relevant info in logs. But the hanging processes issue could always be reproduced consistently. have a nice day -- Marc Duponcheel Velodroomstraat 74 - 2600 Berchem - Belgium +32 (0)478 68.10.91 - marc@offline.be