Hi Colin, On Tue, 09 Sep 2014, 17:00:37 +0200, Colin Ingarfield wrote: > Hello, > > I'm running linux Mint 17 qiana. > $ uname -a > Linux cingarfield-dt 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 > 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux > > The packaged haproxy for this distro is version 1.4.24: > > $ /usr/sbin/haproxy -vv > HA-Proxy version 1.4.24 2013/06/17 > [...] > My question is why does the packaged 1.4.24 use sepoll but from > source 1.5.3 use epoll? Is there a meaningful difference, eg, in > terms of performance?
from <http://www.haproxy.org/news.html>: Nov 22th, 2012 : Development 1.5-dev13 with Compression! 4. Polling o speculative polling was generalized to all pollers, and sepoll disappeared as it was superseded by epoll. The main reason for this important change is the way OpenSSL works and the fact that it can easily get stuck with some data in buffers with no I/O event to unblock them. So we needed to engage into this difficult change. I'd have preferred to delay it to 1.6 if I was offered the choice ! But in the end this is good because it's done and it improves both performance and reliability. Even select() and poll() are now fast. > Thank you, > Colin Ingarfield HTH, cheers. l8er manfred
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