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From: Bob Bishop <rb@gid.co.uk>
Date: Tue, 20 Nov 2007 21:09:53 +0000
To: Kris Kennaway <kris@freebsd.org>
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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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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.

--
Bob Bishop          +44 (0)118 940 1243
rb@gid.co.uk fax +44 (0)118 940 1295