linux-kernel - Re: [PATCH 2/3] vmscan: implement swap token trace

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Date:	Mon, 16 May 2011 17:02:41 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, minchan.kim@...il.com, riel@...hat.com
Subject: Re: [PATCH 2/3] vmscan: implement swap token trace

On Fri, 13 May 2011 20:40:52 +0900
KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> wrote:

> This is useful for observing swap token activity.
> 
> example output:
> 
>              zsh-1845  [000]   598.962716: update_swap_token_priority:
> mm=ffff88015eaf7700 old_prio=1 new_prio=0
>           memtoy-1830  [001]   602.033900: update_swap_token_priority:
> mm=ffff880037a45880 old_prio=947 new_prio=949
>           memtoy-1830  [000]   602.041509: update_swap_token_priority:
> mm=ffff880037a45880 old_prio=949 new_prio=951
>           memtoy-1830  [000]   602.051959: update_swap_token_priority:
> mm=ffff880037a45880 old_prio=951 new_prio=953
>           memtoy-1830  [000]   602.052188: update_swap_token_priority:
> mm=ffff880037a45880 old_prio=953 new_prio=955
>           memtoy-1830  [001]   602.427184: put_swap_token:
> token_mm=ffff880037a45880
>              zsh-1789  [000]   602.427281: replace_swap_token:
> old_token_mm=          (null) old_prio=0 new_token_mm=ffff88015eaf7018
> new_prio=2
>              zsh-1789  [001]   602.433456: update_swap_token_priority:
> mm=ffff88015eaf7018 old_prio=2 new_prio=4
>              zsh-1789  [000]   602.437613: update_swap_token_priority:
> mm=ffff88015eaf7018 old_prio=4 new_prio=6
>              zsh-1789  [000]   602.443924: update_swap_token_priority:
> mm=ffff88015eaf7018 old_prio=6 new_prio=8
>              zsh-1789  [000]   602.451873: update_swap_token_priority:
> mm=ffff88015eaf7018 old_prio=8 new_prio=10
>              zsh-1789  [001]   602.462639: update_swap_token_priority:
> mm=ffff88015eaf7018 old_prio=10 new_prio=12
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>


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