On Thu, Mar 15, 2001 at 03:40:49PM -0600, Jonathan Lemon wrote:
> 
> If there is no knote attached to the structure being monitored, then
> the overhead is just a single if() statement.  Otherwise, the overhead
> is roughly O(N), where N is the number of knotes attached to the structure. 

One of the interesting things about the Solaris and /dev/poll is that
the SVR4 poll(2) lended itself to reusing the structures for both
interfaces without introducing overhead in the `nobody listening' case.