On Thu, Dec 29, 2005 at 12:21:00PM +0100, Kiffin Gish wrote: > I recently upgraded from 5.4 to 6.0 and noticed the introduction of > option SCHED_ULE for supporting multi-processor environments. > > However, I understood that using SCHED_ULE with only one CPU can also > improve performance significantly. > > Is this true, and if so, what are the risks involved dropping good old > SCHED_4BSD for the new-and-improved scheduler?
The risks are that you system will perform 10-20% slower under load, and may sometimes panic or spontaneously reboot. In other words: ULE is not production-ready. This may of course change at a later date. Kris
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