Date: Wed, 23 Jun 2004 20:28:25 -0700
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Phy Prabab <phyprabab@yahoo.com>, linux-kernel@vger.kernel.org
Subject: Re: slow performance w/patch-2.6.7-mjb1
Message-ID: <1952580000.1088047703@[10.10.2.4]>
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References: <20040624004429.76093.qmail@web51806.mail.yahoo.com>
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> Here is a litle bit more information:
> 2.6.7-mjb1 w/4G split enabled:
> 44.91user 56.95system 1:46.30elapsed 95%CPU
> (0avgtext+0avgdata 0maxresident)k
> 0inputs+0outputs (0major+6907875minor)pagefaults
> 0swaps
> 
> 
> 2.6.7-mjb1 w/4G disabled enabled:
> 30.71user 34.56system 1:11.29elapsed 91%CPU
> (0avgtext+0avgdata 0maxresident)k
> 0inputs+0outputs (21major+6907525minor)pagefaults
> 0swaps
> 
> Clearly something is wrong.  This is making headers
> which does a lot of spawning of bash shells and ln -s
> different files and some minor dependancy makes.
> 
> Any help understanding what is happending here would
> be greatly appreciated!

Mmmm. Try grabbing a kernel profile of both, and it might
be easier to see what the overhead is, exactly. See 
Documentation/basic_profiling.txt for instructions if you haven't
done it before.

M.

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