DBus and epoll

anttu.t.koski at nokia.com anttu.t.koski at nokia.com
Mon Oct 25 03:29:41 PDT 2010


Is there some reason why DBus isn't using epoll instead of poll?

In my testing with around 350 file descriptors it seems that almost 3/4 of the time in DBus functions is spent in polling. If I run the test when there is only a couple of fds present, the latencies drop by about 50%. I guess that when there are thousands of descriptors, the latencies are already huge. Epoll should scale much better.



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