From: Wu Fengguang <fengguang.wu@intel.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
"Li, Shaohua" <shaohua.li@intel.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH]vmscan: handle underflow for get_scan_ratio
Date: Tue, 6 Apr 2010 09:22:07 +0800 [thread overview]
Message-ID: <20100406012206.GD5295@localhost> (raw)
In-Reply-To: <20100402180812.646D.A69D9226@jp.fujitsu.com>
> ===================================================================
> >From 52358cbccdfe94e0381974cd6e937bcc6b1c608b Mon Sep 17 00:00:00 2001
> From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Date: Fri, 2 Apr 2010 17:13:48 +0900
> Subject: [PATCH] Revert "vmscan: get_scan_ratio() cleanup"
>
> Shaohua Li reported his tmpfs streaming I/O test can lead to make oom.
> The test uses a 6G tmpfs in a system with 3G memory. In the tmpfs,
> there are 6 copies of kernel source and the test does kbuild for each
> copy. His investigation shows the test has a lot of rotated anon
> pages and quite few file pages, so get_scan_ratio calculates percent[0]
> (i.e. scanning percent for anon) to be zero. Actually the percent[0]
> shoule be a big value, but our calculation round it to zero.
should small :)
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
Thanks,
Fengguang
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next prev parent reply other threads:[~2010-04-06 1:22 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-30 5:53 [PATCH]vmscan: handle underflow for get_scan_ratio Shaohua Li
2010-03-30 6:08 ` KOSAKI Motohiro
2010-03-30 6:32 ` Shaohua Li
2010-03-30 6:40 ` KOSAKI Motohiro
2010-03-30 6:53 ` Shaohua Li
2010-03-30 7:31 ` KOSAKI Motohiro
2010-03-30 8:13 ` Shaohua Li
2010-03-31 4:53 ` Shaohua Li
2010-03-31 5:38 ` KOSAKI Motohiro
2010-03-31 5:51 ` Wu Fengguang
2010-03-31 6:00 ` KOSAKI Motohiro
2010-03-31 6:03 ` Wu Fengguang
2010-04-01 22:16 ` Andrew Morton
2010-04-02 9:13 ` KOSAKI Motohiro
2010-04-06 1:22 ` Wu Fengguang [this message]
2010-04-06 3:36 ` Rik van Riel
2010-03-31 5:53 ` KOSAKI Motohiro
2010-04-02 6:50 ` Shaohua Li
2010-04-02 9:14 ` KOSAKI Motohiro
2010-04-02 9:24 ` Shaohua Li
2010-04-04 14:19 ` KOSAKI Motohiro
2010-04-06 1:25 ` Shaohua Li
2010-04-06 1:36 ` KOSAKI Motohiro
2010-04-06 1:50 ` Wu Fengguang
2010-04-06 2:06 ` KOSAKI Motohiro
2010-04-06 2:30 ` Wu Fengguang
2010-04-06 2:58 ` KOSAKI Motohiro
2010-04-06 3:31 ` Wu Fengguang
2010-04-06 3:40 ` Rik van Riel
2010-04-06 4:49 ` Wu Fengguang
2010-04-06 5:09 ` Shaohua Li
2010-04-04 0:48 ` Wu Fengguang
2010-04-06 1:27 ` Shaohua Li
2010-04-06 5:03 ` Wu Fengguang
2010-04-06 5:36 ` Shaohua Li
2010-04-09 6:51 ` Shaohua Li
2010-04-09 21:20 ` Andrew Morton
2010-04-09 21:25 ` Rik van Riel
2010-04-13 1:30 ` KOSAKI Motohiro
2010-04-13 2:42 ` Rik van Riel
2010-04-13 7:55 ` KOSAKI Motohiro
2010-04-13 8:55 ` KOSAKI Motohiro
2010-04-14 1:27 ` Shaohua Li
2010-04-15 3:25 ` KOSAKI Motohiro
2010-04-12 1:57 ` Shaohua Li
2010-03-31 5:41 ` Wu Fengguang
2010-03-30 10:17 ` Minchan Kim
2010-03-30 10:25 ` KOSAKI Motohiro
2010-03-30 11:56 ` Balbir Singh
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