Date: Fri, 9 Jan 2004 01:49:34 +0100
From: Willy Tarreau <willy@w.ods.org>
To: u1_amd64@dslr.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: time cat /proc/*/statm ?
Message-ID: <20040109004934.GC545@alpha.home.local>
References: <179256560250.20040108135458@dslr.net>
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On Thu, Jan 08, 2004 at 01:54:58PM -0500, u1_amd64@dslr.net wrote:
> Is it reasonable for a 64bit dual cpu to take 5+ seconds of processing to
> cat /proc/*/statm when there is hardly more than 1gb of actual memory
> space used by processes (the rest being filesystem cache)?

Here on alpha, it takes 0.023s (0.011 sys) for 58 processes on 2.4.23.
Perhaps there's something specific to x86_64 ?

Willy

> # free
>              total       used       free     shared    buffers     cached
> Mem:      16278356   16264484      13872          0      85400   14819932
> -/+ buffers/cache:    1359152   14919204
> 
> # ps -eda|wc
>  216     866    6751
> 
> # time cat /proc/*/statm
> :
> :
> :
> real    0m5.740s
> user    0m0.003s
> sys     0m5.521s
> 
> # uname -a
> 
> Linux silver 2.4.21-151-smp #22 SMP Mon Jan 5 21:31:07 PST 2004 x86_64 x86_64 x86_64 GNU/Linux
> 
> 
> thanks!!
> 
> -
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