[zeromq-dev] Questions

Steven McCoy steven.mccoy at miru.hk
Sat Dec 13 14:09:12 CET 2008

2008/12/13 Martin Sustrik <sustrik at fastmq.com>:
> Yes, it may be interesting to use eventfd internally for waking up 0MQ I/O
> threads. Have you ever tested latency of eventfd vs. pipe/socketpair?

It's on my to do list, as I only have a VM of glibc 2.8.  From what I
read on the LKML that it's more of a free convenience from introducing
signalfd and timerfd.  A pure pipe vs. eventfd comparison shows a
significant improvement, as the fd count has halved, but real world
applications would barely notice any difference as nothing is
engineered to depend so much on pipe signalling.


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