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Date: Tue, 20 Nov 2007 22:13:37 +0100
From: Kris Kennaway <kris@FreeBSD.org>
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To: Bob Bishop <rb@gid.co.uk>
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Cc: Attilio Rao <attilio@freebsd.org>, freebsd-stable@freebsd.org,
	Alexey Popov <lol@chistydom.ru>
Subject: Re: 2 x quad-core system is slower that 2 x dual core on FreeBSD
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Bob Bishop wrote:
> Hi,
> 
> FWIW, we are seeing 2 x quad-core 2.66GHz outperform (per core) 2 x 
> dual-core 3GHz on the same type of m/b, apparently because of better 
> bandwidth to memory. However, this is on a compute-intensive workload 
> running 1 job per core so would be pretty insensitive to 
> scheduler/locking issues.

Alexey's problem is pretty specific to filesystem performance.  Good to 
hear though :)

Kris