Message-ID: <20040624004429.76093.qmail@web51806.mail.yahoo.com>
Date: Wed, 23 Jun 2004 17:44:29 -0700 (PDT)
From: Phy Prabab <phyprabab@yahoo.com>
Subject: Re: slow performance w/patch-2.6.7-mjb1
To: "Martin J. Bligh" <mbligh@aracnet.com>, linux-kernel@vger.kernel.org
In-Reply-To: <1945190000.1088003081@[10.10.2.4]>
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Martin et al:

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!

Thanks!
Phy


--- "Martin J. Bligh" <mbligh@aracnet.com> wrote:
> > So I configed with your patch just the basics and
> get
> > similar times that I do with 2.6.7 virigin and
> 2.4.21.
> >  However, as soon as I enable 4G split, the rt
> > increases by ~35s (out of 1m45s compared to
> 1m10s). 
> > Do you know if this is in line w/expectations?  Is
> > there anyway to reduce this?
> 
> Syscalls, etc will definitely be slower ... but it's
> not normally
> that severe ... what's the workload? And how much of
> hte increase
> is systime vs user time? (use /usr/bin/time, not the
> shell builtin)
> 
> M.
> 
> 
> 
> 


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