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Date: Fri, 13 Sep 2002 13:22:54 -0300 (BRT)
From: Rik van Riel <riel@conectiva.com.br>
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To: Con Kolivas <conman@kolivas.net>
cc: linux-kernel@vger.kernel.org, <gh@us.ibm.com>
Subject: Re: System response benchmarks in performance patches
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On Sat, 14 Sep 2002, Con Kolivas wrote:

> I came up with a very simple way of measuring responsiveness that gives
> me numbers that are meaningful to me. What I've done is the old faithful
> kernel compile and measured it under different loads to simulate the
> pc's ability to perform under various loads.

Absolutely wonderful.  I'd love to see this easily scriptable
so we can just run it with one command, eg:

$ ./contest

> Kernel			Time		%CPU
> 2.4.19			3:00.76		58%
> 2.4.19-ck7			2:01.68		86%
> 2.4.19-ck7-rmap		2:05.95		83%
> 2.4.18-6mdk    	        3:01.48         58%

Very interesting results. People benchmarking just one thing
at a time won't get variances anywhere near this big, while
real system workload is pretty much always multitasking.

I think I've finally found a benchmark that gives results which
are meaningful in the context of a multitasking system.

regards,

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/		http://distro.conectiva.com/

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