linux-kernel - Re: [PATCH V3 8/8] memcg: Document cgroup dirty/writeback memory statistics

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Message-ID: <50DCF185.7050408@jp.fujitsu.com>
Date:	Fri, 28 Dec 2012 10:10:29 +0900
From:	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Sha Zhengju <handai.szj@...il.com>
CC:	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	linux-mm@...ck.org, mhocko@...e.cz, akpm@...ux-foundation.org,
	gthelen@...gle.com, fengguang.wu@...el.com, glommer@...allels.com,
	Sha Zhengju <handai.szj@...bao.com>
Subject: Re: [PATCH V3 8/8] memcg: Document cgroup dirty/writeback memory
 statistics

(2012/12/26 2:28), Sha Zhengju wrote:
> From: Sha Zhengju <handai.szj@...bao.com>
> 
> Signed-off-by: Sha Zhengju <handai.szj@...bao.com>

I don't think your words are bad but it may be better to sync with meminfo's text.

> ---
>   Documentation/cgroups/memory.txt |    2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
> index addb1f1..2828164 100644
> --- a/Documentation/cgroups/memory.txt
> +++ b/Documentation/cgroups/memory.txt
> @@ -487,6 +487,8 @@ pgpgin		- # of charging events to the memory cgroup. The charging
>   pgpgout		- # of uncharging events to the memory cgroup. The uncharging
>   		event happens each time a page is unaccounted from the cgroup.
>   swap		- # of bytes of swap usage
> +dirty          - # of bytes of file cache that are not in sync with the disk copy.
> +writeback      - # of bytes of file/anon cache that are queued for syncing to disk.
>   inactive_anon	- # of bytes of anonymous memory and swap cache memory on
>   		LRU list.
>   active_anon	- # of bytes of anonymous and swap cache memory on active
> 

Documentation/filesystems/proc.txt

       Dirty: Memory which is waiting to get written back to the disk
   Writeback: Memory which is actively being written back to the disk

even if others are not ;(

Thanks,
-Kame





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