[sr-dev] [SR-Users] Processes blocking - troubleshooting slow actions

[Daniel-Constantin Mierla]

Is this a virtual machine? How often does it happen?

Sometime the VM manager "freezes" the VM for different purposes, like
backup snapshots, ...

Cheers,
Daniel

On 13.11.19 23:40, Julien Chavanton wrote:
> I guess action type 16 IF_T is accounting for the entire scope block
> since it is recursive.
>
> I wonder why var assignment in the main route scope would do the same :
>
> 2019-11-13T21:58:04.018631614Z 23(42) WARNING: <core>
> [core/action.c:1586]: run_actions(): alert - action [corefunc (16)]
> cfg [/etc/kamailio/kamailio.cfg:115] took too long [2579486 us]
> $var(reply) = 0; // I wonder how this can endup blocking ?
>
> On Wed, Nov 13, 2019 at 2:22 PM Julien Chavanton <jchavanton at gmail.com
> <mailto:jchavanton at gmail.com>> wrote:
>
>     I am troubleshooting intermittent latency on a server,  several
>     processes will report slow action at the same time every now and
>     then,
>     something odd it that some of the actions are most likely not
>     using any mutexes, I can not imagine how they can end up blocking
>     unless the process is actually suspended by the OS, however the
>     CPU usage and load average is quite low on this server.
>
>     Is there any reason why assigning to a PKG var could be delayed 3
>     seconds.
>
>     2019-11-13T21:58:04.018631614Z 23(42) WARNING: <core>
>     [core/action.c:1586]: run_actions(): alert - action [corefunc
>     (16)] cfg [/etc/kamailio/kamailio.cfg:115] took too long [2579486 us]
>     $var(reply) = 0; // I wonder how this can endup blocking ?
>
>     2019-11-13T21:58:04.018748710Z 42(61) WARNING: <core>
>     [core/action.c:1586]: run_actions(): alert - action [corefunc
>     (16)] cfg [/etc/kamailio/kamailio.cfg:221] took too long [2222010 us]
>     } // Samething here, simply exiting a scope
>
>     2019-11-13T21:58:04.015675095Z 11(30) WARNING: <core>
>     [core/action.c:1586]: run_actions(): alert - action
>     [t_relay_cancel (24)] cfg [/etc/kamailio/kamailio.cfg:86] took too
>     long [2588818 us]
>     } if (!t_relay_cancel()) { // Indeed a t_relay_cancel
>
>     2019-11-13T21:58:04.018647988Z 26(45) WARNING: <core>
>     [core/action.c:1586]: run_actions(): alert - action [t_relay (24)]
>     cfg [/etc/kamailio/kamailio.cfg:289] took too long [2739366 us]  
>                      
>     t_relay(); // Indeed a t_relay
>
>     2019-11-13T21:58:04.018651243Z 15(34) WARNING: <core>
>     [core/action.c:1586]: run_actions(): alert - action [sl_send_reply
>     (26)] cfg [/etc/kamailio/kamailio.cfg:112] took too long [2587812 us]
>     sl_send_reply("100", "Trying"); // Indeed a sl_send_reply
>
>
>     Not sure which mailing list is best for this question
>     Regards
>     Julien
>
>
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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference - April 27-29, 2020, in Berlin -- www.kamailioworld.com

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