On Sun, 4 Jun 2006, Willy TARREAU wrote:
Well, we take a lock less but I can't say if it'll be measureable. The
test program above is not a performance thing though, just some code to
verify multiple threads doing waits on the same epoll fd.
OK, so I ported your patch to 2.4 (+epoll-lt-0.22) because I have some
code using it right there. At first, I thought I was observing measuring
errors, but after about 6 reboots, I seem to observe a consistent 6.5%
increase in the number of sessions/s on my fake web server on my dual
athlon. It jumps from 14350 hits/s with epoll-lt-0.22 alone to 15300 with
your patch. It seems much to me, but I'm sure I'm not dreaming (yet).
Ok, that's measureable :)
I'll send you (offlist) an update to 2.4-epoll-lt-0.22 which incorporates
this patch.
Thx for the patch. Got it and uploaded.
- Davide
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