From: Arjan van de Ven <arjan@infradead.org>
To: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: kernel performance update - 2.6.14-rc3
Date: Thu, 06 Oct 2005 08:16:11 +0200 [thread overview]
Message-ID: <1128579372.2960.6.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <200510052115.j95LFgg07836@unix-os.sc.intel.com>
> dbench is catching some attention. We just ran it with default
> parameter. I don't think default parameter is the right one to use
> on some of our configurations. For example, it shows +100% improvement
never ever consider dbench a serious benchmark; the thing is you can
make dbench a lot better very easy; just make the kernel run one thread
at a time until completion. dbench really gives very variable results,
but it is not really possible to say if +100% or -100% is an improvement
or a degredation for real life. So please just don't run it, or at least
don't interpret the results in a "higher is better" way.
next prev parent reply other threads:[~2005-10-06 6:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-05 21:15 Chen, Kenneth W
2005-10-06 6:16 ` Arjan van de Ven [this message]
2005-10-06 10:04 ` Nick Piggin
2005-10-06 18:36 ` Chen, Kenneth W
2005-10-06 19:24 ` Sonny Rao
2005-10-06 19:32 ` Chen, Kenneth W
2005-10-06 10:32 ` Andi Kleen
2005-10-08 0:49 Jon Burgess
2005-10-08 1:38 ` Chen, Kenneth W
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