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Date: Mon, 24 Mar 2003 14:04:35 -0800
From: Larry McVoy <lm@bitmover.com>
To: Andrew Morton <akpm@digeo.com>
Cc: "Martin J. Bligh" <mbligh@aracnet.com>, lm@bitmover.com,
       venkatesh.pallipadi@intel.com, linux-kernel@vger.kernel.org,
       torvalds@transmeta.com
Subject: Re: lmbench results for 2.4 and 2.5 -- updated results
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On Mon, Mar 24, 2003 at 03:36:02PM -0800, Andrew Morton wrote:
> "Martin J. Bligh" <mbligh@aracnet.com> wrote:
> >
> > On a slightly related note, I played with lmbench a bit over the weekend,
> > but the results were too unstable to be useful ... they're also too short
> > to profile ;-( 
> > 
> > I presume it does 100 iterations of a test (like fork latency?). Or does 
> > it just do one? Can I make it do 1,000,000 iterations or something
> > fairly easily ? ;-) I didn't really look closely, just apt-get install
> > lmbench ... 
> 
> Yes, that is something I've wanted several times.  Just a way to say "run
> this test for ever so I can profile the thing".
> 
> Even a sleazy environment string would suffice.

It's been there, I suppose you need to read the source to figure it out
though the lmbench script also plays with this I believe.

work ~/LMbench2/bin/i686-pc-linux-gnu ENOUGH=1000000 time bw_pipe
Pipe bandwidth: 655.37 MB/sec
real    0m23.411s
user    0m0.480s
sys     0m1.180s

work ~/LMbench2/bin/i686-pc-linux-gnu time bw_pipe
Pipe bandwidth: 809.81 MB/sec

real    0m2.821s
user    0m0.480s
sys     0m1.180s


-- 
---
Larry McVoy              lm at bitmover.com          http://www.bitmover.com/lm
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