> > I can't imagine that postmaster could do this, but I thought it there
> > might be some kind of Linux Kernel CPU quota option I haven't heard
> > of.
> > Can anybody point me in the right direction?
I was reading an interview last night (found from /.) on the O(1) scheduler. One thing that was mentioned was batch tasks which get only cpu that's not being used for other things, in blocks of 3 seconds. It has some harder enforcement of nice levels (i.e. batch @ 10 can completely prevent a batch @ 15 from running untill it completes, but is completely interruptable by ordinary processes). Since all the parameters are tweakable, many while running, this may be a place to look.
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