dual vs single core opteron 100's
ohartman at uni-mainz.de
Thu Jan 26 12:21:37 PST 2006
Lars Tunkrans schrieb:
> 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.
> 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.
There are some performance tests around the net concerning povray.
Povray performs much better on a dual core than a single CPU, if it is
multithreaded. In many cases, such as modelling, numbercrunching,
multi-core or multi CPU systems perform much better than single core/CPU
systems! That depends higly on the way the programmer of the application
has aimed multithreading.
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