From: Wu Fengguang <fengguang.wu@intel.com>
To: Iram Shahzad <iram.shahzad@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Ying Han <yinghan@google.com>
Subject: Re: compaction: trying to understand the code
Date: Fri, 20 Aug 2010 13:50:06 +0800 [thread overview]
Message-ID: <20100820055006.GA13916@localhost> (raw)
In-Reply-To: <5EF4FA9117384B1A80228C96926B4125@rainbow>
On Fri, Aug 20, 2010 at 01:45:56PM +0800, Iram Shahzad wrote:
> > What is your test scenario? Who or what has these pages isolated that is
> > allowing too_many_isolated() to be true?
>
> I have a test app that attempts to create fragmentation. Then I run
> echo 1 > /proc/sys/vm/compact_memory
> That is all.
That's all? Is you system idle otherwise? (for example, fresh booted
and not running many processes)
> The test app mallocs 2MB 100 times, memsets them.
> Then it frees the even numbered 2MB blocks.
> That is, 2MB*50 remains malloced and 2MB*50 gets freed.
We are interested in the test app, can you share it? :)
Thanks,
Fengguang
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next prev parent reply other threads:[~2010-08-20 5:50 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-17 11:08 compaction: trying to understand the code Iram Shahzad
2010-08-17 11:10 ` Mel Gorman
2010-08-18 8:19 ` Iram Shahzad
2010-08-18 15:41 ` Wu Fengguang
2010-08-19 7:09 ` Iram Shahzad
2010-08-19 7:45 ` Wu Fengguang
2010-08-19 7:46 ` Mel Gorman
2010-08-19 8:08 ` Wu Fengguang
2010-08-19 8:15 ` Mel Gorman
2010-08-19 8:29 ` Wu Fengguang
2010-08-20 5:45 ` Iram Shahzad
2010-08-20 5:50 ` Wu Fengguang [this message]
2010-08-20 6:13 ` Iram Shahzad
2010-08-19 16:00 ` Minchan Kim
2010-08-20 5:31 ` Iram Shahzad
2010-08-20 5:34 ` Wu Fengguang
2010-08-20 9:35 ` Mel Gorman
2010-08-20 10:22 ` Minchan Kim
2010-08-22 15:31 ` Minchan Kim
2010-08-22 23:23 ` Wu Fengguang
2010-08-23 1:58 ` Minchan Kim
2010-08-23 3:03 ` Iram Shahzad
2010-08-23 9:10 ` Minchan Kim
2010-08-26 8:51 ` Mel Gorman
2010-08-23 7:18 ` Mel Gorman
2010-08-23 17:14 ` Minchan Kim
2010-08-24 0:27 ` Wu Fengguang
2010-08-24 5:07 ` Iram Shahzad
2010-08-24 6:52 ` Minchan Kim
2010-08-26 8:05 ` Iram Shahzad
2010-08-23 7:16 ` Mel Gorman
2010-08-23 9:07 ` Minchan Kim
2010-08-20 10:23 ` Wu Fengguang
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