Hyperthreading degrades performance?
rwatson at FreeBSD.org
Thu Aug 25 18:13:16 GMT 2005
On Thu, 25 Aug 2005, Andre Oppermann wrote:
> Don't forget better PIV revisions with larger instruction decoder
> caches, better cache prefetching and branch prediction. I doubt much of
> the improvement is due to our SMP changes. A real test to find out
> whether it's our work or Intels would be to benchmark an old (pre
> Nacona) PIV running 5.3R and 7.0-current vs. a new one doing the same.
Well, given that my test box for this hasn't changed in three years, I
think I can safely argue it's not the hardware :-).
Robert N M Watson
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