On Tue, 10 May 2005 22:32:14 +0200
Eric Auge <eau@phear.org> wrote:

> does kqueue(2) will provide more reliability? performance?
> during high load on udp? tcp ? should I prefer it to poll(2),
> the quick testing I have made (by replacing poll() by kevent())
> doesn't show much difference.

You shouldn't notice performance changes between kqueue(2) and poll(2)
if you only are polling a single socket, IMO, kqueue's performance
advantage mostly has to do with scalibility when polling a number of
sources at once (userland doesn't have to run through the whole
array/set for instance, to know which sources had events and process
them), and ability to add/remove multiple sources at once from the
polling set (avoiding the need for a syscall per descriptor to
add/remove to/from a polling set)...

Matt
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