[erlang-questions] NET_KERNEL "blocking"
Wed Dec 10 17:06:41 CET 2008
Any idea what can cause net_kernel to stop processing messages?
AFAIK, net_kernel is responsible for servicing socket which is bound to the
listening port registered with EPMD, and as such should never enter any kind
of deadlock. However, what we saw is that net_kernel's process message queue
was increasing with each new connection request, but never flushed, and
never changing reduction count -- hence indicating a deadlock of some kind
The effect of this was that the node was "locked" -- whichever remote node
had a connection establihsed at the time this happened, was able to carry
on, however, no new connections were allowed.
We're ysing R11B... cannot remember, but I think the last bug-fix release
Any feedback is wellcome.
(*) It appears that net_kernel blocked while busy infomring client about
acceptance of the connection, in other words -- not while waiting for a new
connection request (ok...indication, if you wish (-;).
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