On Sun, 2003-04-20 at 20:37, Kevin P. Fleming wrote: > I thought the same thing reading his original message, then I looked > closer. He booted using "noirqbalance", did not start the userspace > balancer, and yet his IRQs are still being balanced. if you don't do a thing, pIII cpu based machines will balance by themselves while pIV cpu based machines will redirect everything to CPU 0.