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To: Stefan Ehmann <shoesoft@gmx.net>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Fri, 15 Dec 2006 12:50:08 +0100."
	<200612151250.10033.shoesoft@gmx.net> 
Date: Fri, 15 Dec 2006 13:39:48 +0000
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Cc: Peter Jeremy <peterjeremy@optushome.com.au>, freebsd-current@freebsd.org,
	Steve Kargl <sgk@troutmask.apl.washington.edu>
Subject: Re: Let's use gcc-4.2, not 4.1 -- OpenMP 
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In message <200612151250.10033.shoesoft@gmx.net>, Stefan Ehmann writes:

>Settings/Compiler           | gcc-3.4 | gcc-4.1 | gcc-4.2
>----------------------------+---------+---------+---------
>-O2                         |  13.1bn |  13.8bn |  13.5bn
>-O2 -funroll-loops          |   9.6bn |   9.3bn |   9.2bn
>-O2 -march=athlon-xp -fun.. |   9.7bn |  10.6bn |  10.7bn
>-O3                         |  11.5bn |   9.5bn |   9.6bn
>-O3 -funroll-loops          |   8.4bn |   9.2bn |   9.4bn
>-O3 -march=athlon-xp -fun.. |   8.8bn |  10.6bn |  11.1bn

I love benchmarks.

It's great when people benchmark things.

Unfortunately, that is not what you have done, because you have
not indicated what the standard deviation on your numbers are,
so they are totally worthless.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.