2009/5/27 Pascal Maugeri <pascal.maug...@gmail.com>: > Hi > > Using Kamailio 1.5 we periodically get the following errors: > > Jul 1 09:54:41 localhost /usr/local/sbin/openser[3836]: > ERROR:core:tcp_blocking_connect: poll error: flags 18 > Jul 1 09:54:41 localhost /usr/local/sbin/openser[3836]: > ERROR:core:tcp_blocking_connect: failed to retrieve SO_ERROR (110) > Connection timed out > Jul 1 09:54:41 localhost /usr/local/sbin/openser[3836]: > ERROR:core:tcpconn_connect: tcp_blocking_connect failed > Jul 1 09:54:41 localhost /usr/local/sbin/openser[3836]: > ERROR:core:tcp_send: connect failed > Jul 1 09:54:41 localhost /usr/local/sbin/openser[3836]: ERROR:tm:msg_send: > tcp_send failed > > They are several emails in this mailing list explaining we should play with > tcp parameters. I will try to change my configuration and see if we can > solve this issue. > > But when this kind of error happen we observe that the kamailio processes > are using 100% of CPU (top). > > Our client is using SIP over TCP only (no UDP). > > Do you have any hint on how to configure Kamailio to improve TCP support ? > Is it normal to kamailio processes to overload CPU ?
Unfortunatelly a kamailio TCP listeners blocks when initiates a outgoing TCP connection. If it fails, you get a kamailio process "stopped" waiting for that connection to end. If you have 8 kamailio TCP listeners and have this issue in all of them, Kamailio cannot handle TCP connection for a while. This is of course something that should change radically (there have been already threads about this issue). However I've ever seen CPU at 100% due to this issues. How many concurrent TCP connection does your kamailio handle when it occurs? -- Iñaki Baz Castillo <i...@aliax.net> _______________________________________________ Kamailio (OpenSER) - Users mailing list Users@lists.kamailio.org http://lists.kamailio.org/cgi-bin/mailman/listinfo/users http://lists.openser-project.org/cgi-bin/mailman/listinfo/users
