From: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
To: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Dave Jones <davej@redhat.com>, Cong Wang <amwang@redhat.com>,
Markus Trippelsdorf <markus@trippelsdorf.de>,
Mel Gorman <mgorman@suse.de>, Minchan Kim <minchan@kernel.org>,
Rik van Riel <riel@redhat.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>
Subject: Re: [PATCH 2/2] mm: compaction: add /proc/vmstat entry for rescued MIGRATE_UNMOVABLE pageblocks
Date: Thu, 14 Jun 2012 12:21:22 -0400 [thread overview]
Message-ID: <4FDA0F82.2030708@gmail.com> (raw)
In-Reply-To: <201206141802.50075.b.zolnierkie@samsung.com>
(6/14/12 12:02 PM), Bartlomiej Zolnierkiewicz wrote:
> From: Bartlomiej Zolnierkiewicz<b.zolnierkie@samsung.com>
> 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.
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next prev parent reply other threads:[~2012-06-14 16:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-14 16:02 [PATCH 2/2] mm: compaction: add /proc/vmstat entry for rescued MIGRATE_UNMOVABLE pageblocks Bartlomiej Zolnierkiewicz
2012-06-14 16:21 ` KOSAKI Motohiro [this message]
2012-06-22 20:12 ` Andrew Morton
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