Hi,

Maybe your OS has `apport` service, which is a core dump file manager ?

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
  https://www.opensips-solutions.com
  https://www.siphub.com

On 22.11.2025 12:52, inderjeet sharma wrote:
Thanks Bogdan,

After more analysis, I noticed that the recv-queue buildup occurs only after the OpenSIPS service crashes. I’ve looked in all expected directories, but the core dump file is not present.

Below are the logs showing the sequence of events during the crash:
Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1595]: CRITICAL:core:sig_usr: segfault in process pid: 1595, id: 46 Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1503]: INFO:core:handle_sigs: child process 1595 exited by a signal 11 Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1503]: INFO:core:handle_sigs: core was generated Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1503]: INFO:core:handle_sigs: terminating due to SIGCHLD Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1550]: INFO:core:sig_usr: signal 15 received Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1552]: INFO:core:sig_usr: signal 15 received Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1551]: INFO:core:sig_usr: signal 15 received Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1503]: INFO:core:shutdown_opensips: process 1(1550) [MI FIFO] terminated, still waiting for 51 more Nov 22 11:46:58 opensips-3-1 /usr/local/sbin/opensips[1503]: INFO:core:shutdown_opensips: process 2(1551) [time_keeper] terminated, still waiting for

On Tue, Nov 11, 2025 at 4:13 PM Bogdan-Andrei Iancu <[email protected]> wrote:

    Hi,

    Have you checked the internal load of opensips, by running the
    `ps` and `get_statistics load:` MI cmds ?

    I suspect some blocking I/O operation is blocking the OpenSIPS
    timer processes, resulting in the reported warning logs.

    Also, if possible (not sure in docker) you should run
    `opensips-cli -x trap` to get an instant x-ray of what the
    opensips processes are doing, maybe this will help spotting the
    problem.

    Regards,

    Bogdan-Andrei Iancu

    OpenSIPS Founder and Developer
       https://www.opensips-solutions.com
       https://www.siphub.com

    On 04.11.2025 16:10, inderjeet sharma wrote:
    version:
    opensips 3.1.11
    (x86 64/linux)
    ٧-
    flags: STATS: On,
    DISABLE_NAGLE, USE MCAST,
    PKG_MALLOC, Q_MALLOC, F_MALLOC, HP_MALLOC, DBG_MALLOC, FAST_LOCK
    ADAPTIVE_WAIT
    ADAPTIVE WAIT LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN
    16, MAX_URI_SIZE 1024,
    BUF_SIZE 65535
    poll method support: poll, epoll, sigio_rt, select. git revision:
    c51486e3a
    main.c compiled on 09:20:17 Nov 20 2024 with gcc 11

    OpenSSL 3.0.2

    PRETTY_NAME="Ubuntu 22.04.5 LTS"
    NAME="Ubuntu"
    VERSION_ID="22.04"
    VERSION="22.04.5 LTS (Jammy Jellyfish)™
    VERSION CODENAME=] ammy



    On Tue, 4 Nov 2025 at 1:50 pm, inderjeet sharma
    <[email protected]> wrote:

        Hi all,

        I've been running OpenSIPS (v3.x) in a Docker container for
        the past 1-2 years as a WebSocket (WSS) registrar handling
        SIP registrations.
        It has been stable until recently — for the past few weeks,
        I'm seeing severe performance stalls.

        • OpenSIPS suddenly stops responding to SIP REGISTER requests.
        • ss -unap shows high Recv-Q values on the listening ports
        (UDP + WSS).
        • The log is flooded with warnings like:
        08:55:31 opensips-3-1 /usr/local/sbin/opensips[79638]:
        WARNING: core: utimer_ticker: utimer task <tm-utimer> already
        117150 ms ago (now
        336619940 ms), delaying execution
        Nov 3 08:55:31 opensips-3-1/usr/local/sbin/opensips[79638]:
        WARNING: core: utimer_ticker: timer task ‹tm-utimer> already
        scheduled 117280 ms ago (now
        336620070 ms), delaying execution
        Nov
        308:55:32 opensips-3-1/us/local/sbin/opensips[79638]:
        WARNING: core: utimer_ticker: utimer task <tm-utimer> already
        scheduled 117350 ms ago (now
        336620140 ms), delaying execution
        NOT
        3 08:55:32 opensips-3-1/usr/local/sbin/opensips[79638]:
        WARNING: core: timer_ ticker: timer task <1b-pinger> already
        scheduled ms ago (now 336620140 ms), delaying execution
        08:55:32 opensips-3-1/us/local/sbin/opensips[79638]: WARNING:
        core: timer_ticker: timer task ‹nh-timer> already scheduled
        ms ago (now 336620140 ms), delaying execution
        308:55:32 opensips-3-1/us/local/sbin/opensips[79638]:
        WARNING: core:timer_ticker: timer task <pg-chk-timer> already
        scheduled 54750 ms ago (now 336620140 ms), delaying execution
        NOV
        308:55:32 opensips-3-1/usr/local/sbin/opensips[79638]:
        WARNING: core: timer_ticker: timer task ‹ul-timer> already
        scheduled
        79650 ms ago (now 336620140 ms), delaying execution
        Nov
        308:55:32 opensips-3-1/us/local/sbin/opensips [79638]:
        WARNING: core: timer_ticker: timer task <d1g-reinvite-pinger>
        already
        scheduled 54750 ms ago (now 336620140 ms), delaying execution
        Nov 308:55:32 opensips-3-1/us/local/sbin/opensips[79638]:
        WARNING: core:timer_ticker: timer task ‹dig-options-pinger>
        already
        308:55:32 opensips-3-1/us/local/sbin/opensips[79638]:
        WARNING: core: timer_ticker: timer task ‹dlg-timer> already
        scheduled
        115460 ms ago (now 336620140 ms), delaying execution
        Nov 308:55:32 opensips-3-1/usr/local/sbin/opensips[79638]:
        WARNING: core: timer_ticker: timer task <EBR timeout> already
        scheduled 54750 ms ago (now 336620140 ms), skipping execution
        308:55:32 opensips-3-1/usr/local/sbin/opensips[79638]:
        WARNING: core: timer_ticker: timer task ‹tm-timer> already

        • Killing the process or restarting the container sometimes
        does not help immediately.
        • CPU and memory usage inside Docker appear normal.

        Thanks
        Inderjeet


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