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Date:      Tue, 24 May 2005 13:21:19 -0700
From:      Kris Kennaway <kris@obsecurity.org>
To:        Bohdan Horst <nexus@hoth.amu.edu.pl>
Cc:        freebsd-stable@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject:   Re: Performance of 4.x vs 5.x (nbench results)
Message-ID:  <20050524202118.GB28257@xor.obsecurity.org>
In-Reply-To: <20050524201701.GB35326@aristo>
References:  <20050524193117.GA35326@aristo> <20050524193707.GA11906@xor.obsecurity.org> <20050524201701.GB35326@aristo>

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On Tue, May 24, 2005 at 10:17:01PM +0200, Bohdan Horst wrote:
> On Tue, May 24, 2005 at 12:37:08PM -0700, Kris Kennaway wrote:
> >=20
> > Thanks, but if the machines are not completely idle then it's
> > impossible to tell whether these numbers are meaningful :-(
>=20
> nbench give almost exact results under load :
>=20
> (1,2,3 nbenchs running)
>=20
> load 1: 496.1
> load 2: 497.7
> load 3: 498.78
>=20
> and all machines have load:
>=20
> 4.11: 0.00 0.00 0.00
> 4.11: 0.03 0.03 0.03
>=20
> 5.4:  0.00 0.00 0.00
> 5.4:  0.00 0.00 0.00

OK, it might be trustable..but you're still testing gcc 2/gcc 3 as
pointed out by another poster.  If you use the same 4.x binaries on
both machines it might be better.

Kris


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