Chuck Cranor <chuck@dworkin.wustl.edu> writes:

> 
> Did you look at http://www.cs.wustl.edu/~amc/research/timer/,
> "New Callout and Timer Facilities for NetBSD" by Adam Costello?

No; I'd never heard of it.  I'll take a look.  From the abstract, it
sounds like exactly the sort of thing I'm looking for.