Date: Tue, 24 Jan 2006 19:09:22 +0100 From: Lars Tunkrans <lars.tunkrans@bredband.net> To: Ken Gunderson <kgunders@teamcool.net> Cc: freebsd-amd64@freebsd.org Subject: Re: dual vs single core opteron 100's Message-ID: <43D66D52.2090008@bredband.net> In-Reply-To: <20060124110334.40e81208.kgunders@teamcool.net> References: <20060124110334.40e81208.kgunders@teamcool.net>
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Ken Gunderson wrote: >Greets Everyone: > >I was getting into a discussion the other day about this and decided to >see what the FBSD amd64 gurus had to say about it. Given approximately >equal cost of, for example, a single core Opteron150 (2.4GHz) and a >dual core Opteron165 (1.8GHz) under what kind of situations would >one be preferred over the other? > >fwiw- my friend asserts it will ALWAYS be the faster single core because >of context switches and dual cores are optimized for highly multi- >threaded OS's (e.g. WInblows). But 1) I think the scheduler has been >improved in 6.0, and 2) he's a linuxer. > >And yes, I know what AMD has to say on this but am interested in the >FBSD community's perspective on this w.r.t. FBSD. > >TIA > > > The DUAL core will be prefferd for Webservers, Application servers, and databases that are multithreaded and transaction oriented. The singel Core will be preffered for Simulations, Compute intensive stuff - image Rendering , Games , that are singel threaded. //Lars
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