In message <005301c37dc2$13aabd70$0301a8c0@cactus>, "Eric Delcamp" writes:
>Hyperthreading <> MP. In HT, cores share the cache and the memory bus. That
>could lead to poor performance under a few applications. AFAIK, HT is supported
>in NetBSD, -current at least. And it's usefull if you compare the price of a HT
>processor and the GLOBAL power you gain.

Well, that's why I'm asking.  Under Linux and BSD/OS, at least, hyperthreading
tends to appear as additional CPU's.

-s