[Zope] xeon performance & GIL

[seb bacon]

Hi all,

I've sent this query to c.l.python without any answer yet.  I wondered 
if anyone here can either inform me or correct me.

Basically, I was wondering if SMT (hyperthreading) in a Xeon gives 
similar (bad) performance characteristics to SMP in CPU-bound python apps?

I am hoping not, because my guess is that a context switch between 
hyperthreads is considerably cheaper than an intra-CPU switch.

But seeing as my knowledge of this area is fairly limited, I could be 
entirely wrong...

seb