From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx194.postini.com [74.125.245.194]) by kanga.kvack.org (Postfix) with SMTP id E82FB6B0031 for ; Mon, 17 Jun 2013 17:44:56 -0400 (EDT) Received: by mail-pa0-f45.google.com with SMTP id bi5so3282672pad.32 for ; Mon, 17 Jun 2013 14:44:56 -0700 (PDT) Date: Mon, 17 Jun 2013 14:44:54 -0700 (PDT) From: David Rientjes Subject: Re: [PATCH] slub: Avoid direct compaction if possible In-Reply-To: <51BF230E.8050904@yandex-team.ru> Message-ID: References: <51BB1802.8050108@yandex-team.ru> <0000013f4319cb46-a5a3de58-1207-4037-ae39-574b58135ea2-000000@email.amazonses.com> <51BF024F.2080609@yandex-team.ru> <20130617142715.GB8853@dhcp22.suse.cz> <51BF230E.8050904@yandex-team.ru> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Roman Gushchin Cc: Michal Hocko , Christoph Lameter , penberg@kernel.org, mpm@selenic.com, akpm@linux-foundation.org, mgorman@suse.de, glommer@parallels.com, hannes@cmpxchg.org, minchan@kernel.org, jiang.liu@huawei.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org On Mon, 17 Jun 2013, Roman Gushchin wrote: > > FWIW, there were some compaction locking related patches merged > > around 3.7. See 2a1402aa044b55c2d30ab0ed9405693ef06fb07c and follow ups. > > Thanks, Michal. > I've already tried to backport some of those patches, but it didn't help > (may be it wasn't enough). They certainly aren't enough, the kernel you're running suffers from a couple different memory compaction issues that were fixed in 3.7. I couldn't sympathize with your situation more, I faced the same issue because of thp and not slub (we use slab). > I'll try to reproduce the issue on raw 3.9. > Thanks. If you need to go back to 3.4, try using these, they significantly helped our issues: bb13ffeb9f6bfeb301443994dfbf29f91117dfb3 627260595ca6abcb16d68a3732bac6b547e112d6 c89511ab2f8fe2b47585e60da8af7fd213ec877e 62997027ca5b3d4618198ed8b1aba40b61b1137b a9aacbccf3145355190d87f0df1731fb84fdd8c8 -- 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