From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx156.postini.com [74.125.245.156]) by kanga.kvack.org (Postfix) with SMTP id 8C2076B005D for ; Tue, 13 Nov 2012 18:46:13 -0500 (EST) Received: by mail-ea0-f169.google.com with SMTP id k11so3734465eaa.14 for ; Tue, 13 Nov 2012 15:46:12 -0800 (PST) MIME-Version: 1.0 In-Reply-To: References: From: Andy Lutomirski Date: Tue, 13 Nov 2012 15:45:51 -0800 Message-ID: Subject: Re: [3.6 regression?] THP + migration/compaction livelock (I think) Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes Cc: Marc Duponcheel , Mel Gorman , linux-kernel@vger.kernel.org, linux-mm@kvack.org On Tue, Nov 13, 2012 at 3:41 PM, David Rientjes wrote: > On Tue, 13 Nov 2012, Andy Lutomirski wrote: > >> It just happened again. >> >> $ grep -E "compact_|thp_" /proc/vmstat >> compact_blocks_moved 8332448774 >> compact_pages_moved 21831286 >> compact_pagemigrate_failed 211260 >> compact_stall 13484 >> compact_fail 6717 >> compact_success 6755 >> thp_fault_alloc 150665 >> thp_fault_fallback 4270 >> thp_collapse_alloc 19771 >> thp_collapse_alloc_failed 2188 >> thp_split 19600 >> > > Two of the patches from the list provided at > http://marc.info/?l=linux-mm&m=135179005510688 are already in your 3.6.3 > kernel: > > mm: compaction: abort compaction loop if lock is contended or run too long > mm: compaction: acquire the zone->lock as late as possible > > and all have not made it to the 3.6 stable kernel yet, so would it be > possible to try with 3.7-rc5 to see if it fixes the issue? If so, it will > indicate that the entire series is a candidate to backport to 3.6. I'll try later on. The last time I tried to boot 3.7 on this box, it failed impressively (presumably due to a localmodconfig bug, but I haven't tracked it down yet). I'm also not sure how reliably I can reproduce this. --Andy -- Andy Lutomirski AMA Capital Management, LLC -- 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