From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx140.postini.com [74.125.245.140]) by kanga.kvack.org (Postfix) with SMTP id 810C06B0072 for ; Thu, 14 Jun 2012 12:21:26 -0400 (EDT) Received: by dakp5 with SMTP id p5so3398934dak.14 for ; Thu, 14 Jun 2012 09:21:25 -0700 (PDT) Message-ID: <4FDA0F82.2030708@gmail.com> Date: Thu, 14 Jun 2012 12:21:22 -0400 From: KOSAKI Motohiro MIME-Version: 1.0 Subject: Re: [PATCH 2/2] mm: compaction: add /proc/vmstat entry for rescued MIGRATE_UNMOVABLE pageblocks References: <201206141802.50075.b.zolnierkie@samsung.com> In-Reply-To: <201206141802.50075.b.zolnierkie@samsung.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Bartlomiej Zolnierkiewicz Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , Hugh Dickins , KOSAKI Motohiro , Dave Jones , Cong Wang , Markus Trippelsdorf , Mel Gorman , Minchan Kim , Rik van Riel , Marek Szyprowski , Kyungmin Park (6/14/12 12:02 PM), Bartlomiej Zolnierkiewicz wrote: > From: Bartlomiej Zolnierkiewicz > Subject: [PATCH] mm: compaction: add /proc/vmstat entry for rescued MIGRATE_UNMOVABLE pageblocks > > compact_rescued_unmovable_blocks shows the number of MIGRATE_UNMOVABLE > pageblocks converted back to MIGRATE_MOVABLE type by the memory compaction > code. Non-zero values indicate that large kernel-originated allocations > of MIGRATE_UNMOVABLE type happen in the system and need special handling > from the memory compaction code. > > This new vmstat entry is optional but useful for development and understanding > the system. This description don't describe why admin need this stat and how to use it. -- 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