From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH 3/4] vmstat: add anon_scan_ratio field to zoneinfo
Date: Tue, 29 Dec 2009 19:38:25 +0530 [thread overview]
Message-ID: <20091229140825.GQ3601@balbir.in.ibm.com> (raw)
In-Reply-To: <20091228164816.A68D.A69D9226@jp.fujitsu.com>
* KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> [2009-12-28 16:48:51]:
> Vmscan folks was asked "why does my system makes so much swap-out?"
> in lkml at several times.
> At that time, I made the debug patch to show recent_anon_{scanned/rorated}
> parameter at least three times.
>
> Thus, its parameter should be showed on /proc/zoneinfo. It help
> vmscan folks debugging.
>
Hmmm.. I think this should come under DEBUG_VM, a lot of tools use
/proc/zoneinfo, the additional overhead may be high.. no? Also,
I would recommend adding the additional details to the end, so
as to not break existing tools (specifically dump line # based
tools).
--
Balbir
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next prev parent reply other threads:[~2009-12-29 14:09 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-28 7:47 [PATCH 1/4] vmstat: remove zone->lock from walk_zones_in_node KOSAKI Motohiro
2009-12-28 7:48 ` [PATCH 2/4] vmscan: get_scan_ratio cleanup KOSAKI Motohiro
2009-12-29 7:34 ` Balbir Singh
2009-12-30 13:06 ` KOSAKI Motohiro
2010-01-01 14:55 ` Rik van Riel
2010-01-03 23:45 ` KAMEZAWA Hiroyuki
2009-12-28 7:48 ` [PATCH 3/4] vmstat: add anon_scan_ratio field to zoneinfo KOSAKI Motohiro
2009-12-29 14:08 ` Balbir Singh [this message]
2009-12-30 13:13 ` KOSAKI Motohiro
2010-01-01 14:59 ` Rik van Riel
2010-01-03 23:47 ` KAMEZAWA Hiroyuki
2009-12-28 7:49 ` [PATCH 4/4] memcg: add anon_scan_ratio to memory.stat file KOSAKI Motohiro
2009-12-29 14:09 ` Balbir Singh
2009-12-30 12:53 ` KOSAKI Motohiro
2009-12-29 4:05 ` [PATCH 1/4] vmstat: remove zone->lock from walk_zones_in_node Minchan Kim
2009-12-29 6:34 ` Balbir Singh
2009-12-30 12:49 ` KOSAKI Motohiro
2010-01-03 18:59 ` Mel Gorman
2010-01-05 2:04 ` KOSAKI Motohiro
2010-01-05 10:18 ` Mel Gorman
2010-01-06 0:33 ` KOSAKI Motohiro
2010-01-03 23:48 ` KAMEZAWA Hiroyuki
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