Hyperthreading... good or bad?

I recently built a dual Xeon computer… is it worth it to enable hyperthreading using Win2K Advanced Server? I’ve heard good things and bad things about hyperthreading and I’m confused.

I’m curious to hear what bad things you’ve heard. I just built a dual Xeon, and having enabled hyperthreading, I’ve seen nothing wrong with it. I’ve seen no particular advantage yet, but I haven’t stress tested multi-tasking in my computer yet.

You are multitasking all the time. Take a look at the PerfMon, the system would be running a dozen of threads even when it’s idle.

As for the general impact of HT… It’s good because it’ll make folks switch to NT-based systems. It’s bad because there’s a class of program bugs only manifest themselves on multiprocessor computers.