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brain fart: is the current OSX optimized for multithread dual core processors?
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Junior Member
Join Date: Feb 2006
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i cant remember if it is or not.
im totally frozen
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Professional Poster
Join Date: Nov 2004
Location: eating kernel
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Signature depreciated.
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Mac Elite
Join Date: Jul 2002
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Clinically Insane
Join Date: Oct 2001
Location: San Diego, CA, USA
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Chuck
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"Instead of either 'multi-talented' or 'multitalented' use 'bisexual'."
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Clinically Insane
Join Date: Mar 2001
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It's "dual", BTW... The processors in a Mac don't duel, fortunately. 
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Mac Elite
Join Date: Aug 2001
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Well, unless the process affinity scheduling isn't working right and they start trashing each others caches.
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Mac Elite
Join Date: Sep 2005
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OS X is multi-threaded, yes. Multi-threading in OS X, however, is a joke according to many people.
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Clinically Insane
Join Date: Oct 2001
Location: San Diego, CA, USA
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Originally Posted by Tomchu 
OS X is multi-threaded, yes. Multi-threading in OS X, however, is a joke according to many people.
Watchoo talkin' 'bout, Willis?
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Chuck
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"Instead of either 'multi-talented' or 'multitalented' use 'bisexual'."
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Mac Elite
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Moderator  Join Date: May 2001
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First of all, OS X supports multithreading and systems with several cores from the very beginning.
None of the commercially available Intel Macs has hyperthreading (aka simultaneous multithreading, etc.) which is entirely different from having several cores: the cpu pretends to consist of several cpus so that available resources can be utilized more efficiently by several threads. Intel's deprecated Netburst (Pentium 4) architecture had this (and thus the developer Intel Mac), but the current Core architecture-based Intel cpus do not. The successors to the current generation of Core cpus supposedly include hyperthreading again, so we cannot really say whether Apple will decide to include support for this feature or not. My guesstimate is that it will. But as of now, it's simply not relevant for Mac users.
Regarding smp performance, FreeBSD has made a lot of progress in this area lately, so I guess some of that will trickle down to OS X eventually.
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I don't suffer from insanity, I enjoy every minute of it.
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Clinically Insane
Join Date: Oct 2001
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Chuck
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"Instead of either 'multi-talented' or 'multitalented' use 'bisexual'."
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