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From: Eric Valette <eric.valette@free.fr>
To: Albert Cahalan <albert@users.sf.net>
Cc: linux-kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: Inconsistancies in /proc (status vs statm) leading to wrong	documentation (proc.txt)
Date: Sat, 09 Oct 2004 16:08:23 +0200	[thread overview]
Message-ID: <4167F0D7.3020502@free.fr> (raw)
In-Reply-To: <1097329771.2674.4036.camel@cube>

Albert Cahalan wrote:

> The documentation is incorrect. It was written to match a buggy
> implementation in early 2.6.x kernels.

Well the Documentation is said to matches 2.6.8-rc3 and is only 5 weeks 
old according to bitkeeper changesets... So at least the doc should be 
fixed.

> VmSize is the address space occupied, excluding memory-mapped IO.
> The statm value is the address space occupied.

Why removing memory-mapped IO in one case (status) and not the other 
(statm)? Memory mapped IO, may of course reserve some physical memory 
pages for establishing the mmu->phys adress translation table (if any) 
but not really the amount of space mapped.

>>May I suggest :
>> - To use consistent memory size units between status and statm,

> No way. This would instantly break the "top" program.

OK. Too bad because statm is hardly readable but I guess it is not for 
human then...

Thanks for responding,

-- eric


  reply	other threads:[~2004-10-09 14:08 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-09 13:49 Inconsistancies in /proc (status vs statm) leading to wrong documentation (proc.txt) Albert Cahalan
2004-10-09 14:08 ` Eric Valette [this message]
2004-10-09 16:31   ` Albert Cahalan
2004-10-09 16:46     ` Eric Valette
2004-10-09 16:59       ` Albert Cahalan
2004-10-09 17:46         ` Eric Valette
  -- strict thread matches above, loose matches on Subject: below --
2004-10-09  9:54 Eric Valette

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