On Fri, Mar 20, 2009, Thor Lancelot Simon wrote:

> > Try doing it under strace and see what happens.
> > I seem to recall it caused one epoll syscall per event
> > on each time around the event loop.
> 
> Ugh.  That sounds like a terrible limitation of epoll.  A syscall
> _per event_?
> 
> Once again I'm glad to not be using Linux.

Unless your application is different in every respect to normal applications,
you're already doing craptons of read/write syscalls, some setsockopt syscalls,
etc, so dropping your epoll syscalls by 1/2 will have a very small effect on
performance.

(At least on current hardware.)



Adrian

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