Anthony Atkielski wrote:
From what you say and from what I've read today, it sounds likehyperthreading comes close to providing two separate processors for heterogenous system loads (where each hyperthread is using slightly different processor resources at any given instant), but it may not buy much of anything for massively parallel compute-bound work,
FWIW I tried numerical computations on a P4 with HT enabled: I expected using 2 threads might give *at least slightly* better results, but I could come to the conclusion that with 1, 2 or 4 threads the performance gain (or loss) was exactly zero.
(BTW, an old AMD 2000 XP+ would in any case almost outperform a P4 3GHz, but that's another story).
Obviously your use (as a server) is very different, and probably the one test I have done can't expect to achieve 100% coverage even in this field... but, anyway, just my 2 cents...
bye
av.
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