3 ms·

I see, but if it's a timer problem then with libevent you can roll your own timer queue optimized for your workload. The libevent core is small and well designe

I see, but if it's a timer problem then with libevent you can roll your own timer queue optimized for your workload. The libevent core is small and well designed (but not well documented), integrating custom timer mechanisms is actually pretty straightforward. However the claim is made that connections are added and removed more often than polling is conducted (definitely the opposite of the average mysql workload), so I'd guess most low level high performance poll apis aren't optimized for that sort of workload.

tptacek 18y ago
The only place where I'd intuit that the event queue is modified as often as raw I/O is performed is for async writes (you're potentially adding/removing them every other timeslice). Obviously I agree with you on the timer queue thing; I got a performance win simply by shoplifting the timer queue implementation out of MIT Athena; it took maybe a couple hours to integrate and test, and I didn't need to touch the libevent internals to do it.