[Kamailio-Users] tcp_blocking_connect related errors and Kamailio using 100% CPU

[Zunnun]

I have also found this problem with 1.5.3. Modified Kamailio's source code to
fix that problem. Now I don't have this problem. 



Pascal Maugeri wrote:
> 
> 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 ?
> 
> Regards,
> Pascal
> 
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