> > > On a related note, what's the consensus on enabling hyperthreading on
> > > a CentOS system? Good, bad, indifferent? The systems will be used
> > > as developer workstations.
> >
> > If it is a 100% workstation only (no mysql, postgres etc), then it is
> > ok to use it. Otherwise, you are asking for trouble.
>
Four x86_64 systems, all dual Xeon with hyperthreading enabled: one
dedicated MySQL server, two web servers, one combined web + MySQL
server, running CentOS 4.3 (2 systems) and Debian (2 systems)
One x86 system, also dual Xeon with hyperthreading enabled, web server (Debian).
Everything has worked flawlessly so far.