In article <20040726102903.GA21256@antioche.lip6.fr>, Manuel Bouyer wrote:
>
> I've done a simple performance test of a PVI-HT, to see the benefit
> of hyperthreading.
[snip]
> 
> NetBSD borneo.lip6.fr 2.0_BETA NetBSD 2.0_BETA (GENERIC) #1: ...
[snip]
> NetBSD borneo.lip6.fr 2.0_BETA NetBSD 2.0_BETA (P4P800) #1: ...
[snip]
> This may be the reason why NetBSD see an improvement with HT while
> linux sees a slowdown, and I suspect this is related to fine-grained
> locking vs biglock.

Could there also be a GENERIC vs non-bloated kernel effect?

  Alan