[TriLUG] Hyperthreading and Xeons

Jeremy Portzer jeremyp at pobox.com
Wed Oct 13 13:06:42 EDT 2004


So, I got my first Xeon server recently, and although it's really dual
2.6 GHz, it shows as four processors to Linux.

Does this mean that I should treat it as a four-processor computer for
the purposes of starting processes?  For example, I have a program that
runs as many copies of itself as there are processors (but you have to
tell it how many processors there are).  Should I let it run four copies
or stick with two?

Any other consequences to hyperthreading I should know about?

Thanks,
Jeremy
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