From: Mel Gorman <mel@csn.ul.ie>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
yanmin.zhang@intel.com, Wu Fengguang <fengguang.wu@intel.com>,
linuxram@us.ibm.com, linux-mm <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/3] Reintroduce zone_reclaim_interval for when zone_reclaim() scans and fails to avoid CPU spinning at 100% on NUMA
Date: Mon, 8 Jun 2009 15:38:57 +0100 [thread overview]
Message-ID: <20090608143857.GG15070@csn.ul.ie> (raw)
In-Reply-To: <alpine.DEB.1.10.0906081033060.21954@gentwo.org>
On Mon, Jun 08, 2009 at 10:33:41AM -0400, Christoph Lameter wrote:
> On Mon, 8 Jun 2009, Mel Gorman wrote:
>
> > Yes, they're on separate LRU lists but they are not the only pages on those
> > lists. The tmpfs pages are mixed in together with anonymous pages so we
> > cannot use NR_*_ANON.
>
> The tmpfs pages are unreclaimable and therefore should not be on the anon
> lru.
>
tmpfs pages can be swap-backed so can be reclaimable. Regardless of what
list they are on, we still need to know how many of them there are if
this patch is to be avoided.
--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab
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next prev parent reply other threads:[~2009-06-08 13:20 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-08 13:01 [PATCH 0/3] [RFC] Functional fix to zone_reclaim() and bring behaviour more in line with expectations Mel Gorman
2009-06-08 13:01 ` [PATCH 1/3] Reintroduce zone_reclaim_interval for when zone_reclaim() scans and fails to avoid CPU spinning at 100% on NUMA Mel Gorman
2009-06-08 13:31 ` Rik van Riel
2009-06-08 13:54 ` Mel Gorman
2009-06-08 14:33 ` Christoph Lameter
2009-06-08 14:38 ` Mel Gorman [this message]
2009-06-08 14:55 ` Christoph Lameter
2009-06-08 15:11 ` Mel Gorman
2009-06-10 5:23 ` Andrew Morton
2009-06-10 6:44 ` KOSAKI Motohiro
2009-06-10 10:00 ` Mel Gorman
2009-06-08 14:48 ` Rik van Riel
2009-06-09 8:08 ` Mel Gorman
2009-06-09 1:58 ` Wu Fengguang
2009-06-09 8:14 ` Mel Gorman
2009-06-09 8:25 ` Wu Fengguang
2009-06-09 8:31 ` Mel Gorman
2009-06-09 9:07 ` Wu Fengguang
2009-06-09 9:40 ` Mel Gorman
2009-06-09 13:38 ` Wu Fengguang
2009-06-09 15:06 ` Mel Gorman
2009-06-10 2:14 ` Wu Fengguang
2009-06-10 9:54 ` Mel Gorman
2009-06-09 7:48 ` KOSAKI Motohiro
2009-06-09 8:18 ` Mel Gorman
2009-06-09 8:45 ` KOSAKI Motohiro
2009-06-09 9:42 ` Mel Gorman
2009-06-09 9:45 ` KOSAKI Motohiro
2009-06-09 9:59 ` KOSAKI Motohiro
2009-06-09 10:44 ` Mel Gorman
2009-06-09 10:50 ` KOSAKI Motohiro
2009-06-08 13:01 ` [PATCH 2/3] Properly account for the number of page cache pages zone_reclaim() can reclaim Mel Gorman
2009-06-08 14:25 ` Christoph Lameter
2009-06-08 14:36 ` Mel Gorman
2009-06-09 2:25 ` Wu Fengguang
2009-06-09 8:27 ` Mel Gorman
2009-06-09 8:45 ` Wu Fengguang
2009-06-09 10:48 ` Mel Gorman
2009-06-09 12:08 ` Wu Fengguang
2009-06-09 8:55 ` KOSAKI Motohiro
2009-06-09 2:37 ` Wu Fengguang
2009-06-09 8:19 ` KOSAKI Motohiro
2009-06-09 8:47 ` Mel Gorman
2009-06-08 13:01 ` [PATCH 3/3] Do not unconditionally treat zones that fail zone_reclaim() as full Mel Gorman
2009-06-08 14:32 ` Christoph Lameter
2009-06-08 14:43 ` Mel Gorman
2009-06-09 3:11 ` Wu Fengguang
2009-06-09 8:50 ` Mel Gorman
2009-06-09 7:48 ` KOSAKI Motohiro
2009-06-09 9:25 ` Mel Gorman
2009-06-09 12:05 ` KOSAKI Motohiro
2009-06-09 13:28 ` Mel Gorman
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