linux-kernel - Re: [RFC Patch] getrusage: fill ru_ixrss, ru_idrss and ru

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Message-ID: <4B1E13C8.70704@redhat.com>
Date:	Tue, 08 Dec 2009 16:52:24 +0800
From:	Cong Wang <amwang@...hat.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
CC:	linux-kernel@...r.kernel.org, Jiri Pirko <jpirko@...hat.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Oleg Nesterov <oleg@...hat.com>, akpm@...ux-foundation.org,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [RFC Patch] getrusage: fill ru_ixrss, ru_idrss and ru_isrss fields

KOSAKI Motohiro wrote:
> 	The next three fields, the subject of this patch, are named ru_XXrss:
> 	though the 80-column comment omits to say "resident set" before "size",
> 	I believe they'd be expected to account (subdivided) resident set sizes?
> 
> 
> your calculation is not rss nor not integral.
> 

Hmm, I misunderstood rss here. Does it mean the memory stayed in
physical mem? i.e. not swapped out.

So, if I want to get those rss statistics, I have to add some more
mm_counter by myself? I only find file_rss and anon_rss in mm_struct.

Thanks.

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