use linux, you are clearly a moron, it will suit you better.
you have posted to this list about a dozen times in a 12 hour period,
this is a sign you are an idiot. you complain about not being able to
renice i/o, another sign. you are not even using openbsd on vmware, yet
another sign you are an idiot. i'd say the case that you are an idiot is
pretty well settled.
when you are using an OS you will rarely or never renice processes, it
is a total waste of time. get a faster machine or let your machine sit
and do its work. micromanaging a computer is a fool's errand.