Luasocket: poll vs select
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- Subject: Luasocket: poll vs select
- From: Javier Gallart <jgallartm@...>
- Date: 2012年2月21日 16:13:27 +0100
Hi all
we are running a freeswitch based application that uses intensively the Lua XML-RPC library. Everything runs perfectly fine until we reach 12-15 calls/sec, which can be safely assumed to mean to 12-15 http requests/seq. At that point some of the invocations of xmlrpc.http "call" method fails with either with "Resource Temporarily unavailable" or "Bad file descriptor". If we push it a bit harder, freeswitch dies:
Core was generated by `./freeswitch -nc -ncwait -nonat'.
Program terminated with signal 11, Segmentation fault.
#0 0x00002aaab291dd70 in socket_recv () from /usr/local/lib/lua/5.1/socket/core.so
I read here:
http://wiki.voiceworks.pl/display/~pawel/Luasocket+core+dumps+in+socket_waitfd that usage of poll instead of select was preferred. I just tried it and in a test environment it woks perfect, I've been able to reach more than 20 calls/sec without a single failure. However, I'm not really sure of what I'm doing and I'd like to know if this change could have any side effect. What do you think?
Regards
Javier