Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

Ingo Molnar
2007-03-01T14:24:47Z

* Eric Dumazet <dada1@cosmosbay.com> wrote:

> I can tell you that the problem (at least on my machine) comes from :
>
> gettimeofday(&tm, NULL);
>
> in evserver_epoll.c

yeah, that's another difference - especially if it's something like an
Athlon64 and gettimeofday falls back to pm-timer, that could explain the
performance difference. That's why i repeatedly asked Evgeniy to use the
/very same/ client function for both the epoll and the kevent test and
redo the measurements. The numbers are still highly suspect - and we are
already down from the prior claim of kevent being almost twice as fast
to a 25% difference.

Ingo