Re: [OpenSIPS-Users] TCP Errors

Vlad Paiu Mon, 30 Jun 2014 02:07:26 -0700

Hello,

First of all, are you using the async_tcp option in your OpenSIPS script ?
Also, what architecture / OS are you running on ?
What steps are you taking in reproducing this ?


Best Regards,

Vlad Paiu
OpenSIPS Developer
http://www.opensips-solutions.com

On 27.06.2014 19:59, Gary Nyquist wrote:

Thanks Bogdan for looking into it.
Here is the version:
opensips -V
version: opensips 1.11.1-tls (x86_64/linux)

flags: STATS: On, USE_TCP, USE_TLS, DISABLE_NAGLE, SHM_MEM, SHM_MMAP,PKG_MALLOC, F_MALLOC, USE_SHM_MEM, FAST_LOCK-ADAPTIVE_WAITADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16,MAX_URI_SIZE 1024, BUF_SIZE 65535

poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
git revision: dbc8653
main.c compiled on 16:17:43 Jun 26 2014 with gcc 4.4.7
Yes, this bug is reproducable.

When it appears, the log file instantly gets filled with hundreds ofrepeating lines like this:Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]:DBG:core:handle_tcpconn_ev: data available on 0x7f40bcec7398 6Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]:DBG:core:io_watch_del: io_watch_del op on index -1 6 (0x7dff20, 6, -1,0x0,0x1) fd_no=110 calledJun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]:ERROR:core:io_watch_del: BUG - trying to del fd 6 with flags 2 1Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]:DBG:core:handle_tcpconn_ev: data available on 0x7f40bcec7398 6Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]:DBG:core:io_watch_del: io_watch_del op on index -1 6 (0x7dff20, 6, -1,0x0,0x1) fd_no=110 calledJun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]:ERROR:core:io_watch_del: BUG - trying to del fd 6 with flags 2 1

Thanks again for your help.
BR
-Gary
*Sent:* Thursday, June 26, 2014 at 10:56 AM
*From:* "Bogdan-Andrei Iancu" <bog...@opensips.org>
*To:* "Gary Nyquist" <g...@gmx.us>
*Cc:* "OpenSIPS users mailling list" <users@lists.opensips.org>
*Subject:* Re: [OpenSIPS-Users] TCP Errors
Hi,

That bug log actually says OpenSIPS tries to remove a connectionmarked as READ from a list for WRITEs :)..

I will look into that. What exact version do you use (opensips -V) ?also, can you reproduce this bug ?


Thanks and regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 25.06.2014 20:27, Gary Nyquist wrote:

    Thanks Bogdan for the detailed reply.
    I implemented your advice.
    Those error messages are now gone.
    But seeing a new error now; not sure if it is related to that...
    ERROR:core:io_watch_del: BUG - trying to del fd 36 with flags 2 1
    Any advice?
    BR
    -Gary
    *Sent:* Wednesday, June 25, 2014 at 5:54 AM
    *From:* "Bogdan-Andrei Iancu" <bog...@opensips.org>
    *To:* "OpenSIPS users mailling list" <users@lists.opensips.org>,
    g...@gmx.us
    *Subject:* Re: [OpenSIPS-Users] TCP Errors
    Hi,

    Those messages say that OpenSIPS tried to open a TCP connection to
    a party which does not respond -> there was a timeout for connect
    in 10 seconds. Because of this blocking in connects, there were
    not more opensips workers available to handle other traffic.

    So what you need to do is :
        - minimize the impact of the blocking connect - see my
    previous email on reducing the connect timeout
        - you may configure OpenSIPS not to open new TCP connect (but
    to reuse the existing ones, open by clients). See
    tcp_no_new_conn_bflag
    http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc96
        - try to understand the SIP patterns where such TCP connect
    fails so you can avoid them at script level.

    Regards,

    Bogdan-Andrei Iancu
    OpenSIPS Founder and Developer
    http://www.opensips-solutions.com

    On 24.06.2014 21:34, Gary Nyquist wrote:

        Hi,

        The following lines are repeating in the log.

        ERROR:core:tcp_blocking_connect: timeout 10 s elapsed from 10 s
        ERROR:core:tcpconn_connect: tcp_blocking_connect failed
        ERROR:core:tcp_send: connect failed
        ERROR:tm:msg_send: tcp_send failed

        INFO:core:send2child: no free tcp receiver, connection passed
        to the least busy one

        Any guess, what could be the reason?

        Best

        --Gary

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Re: [OpenSIPS-Users] TCP Errors

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