[SR-Users] rtimer execution period - round two

[Alex Balashov]

I think some sort of execution time governor in the actions 
infrastructure is probably the right angle here.

I added a log statement to modules_k/rtimer/rtimer_mod.c:stm_timer_exec():

         for(rt=it->rt; rt; rt=rt->next)
         {
                 fmsg = faked_msg_next();
                 if (exec_pre_script_cb(fmsg, REQUEST_CB_TYPE)==0 )
                         continue; /* drop the request */
                 set_route_type(REQUEST_ROUTE);
                 run_top_route(main_rt.rlist[rt->route], fmsg, 0);
                 LM_ERR("Fell out of route execution: %u\n", time(NULL));
                 exec_post_script_cb(fmsg, REQUEST_CB_TYPE);
         }

And here's what I saw, with the previous test task (quoted in the 
message above which I am posting):

Jul 23 21:20:15 diminuendo-1 /usr/local/sbin/kamailio[26255]: ERROR: 
rtimer [rtimer_mod.c:192]: Fell out of route execution: 1343092815
Jul 23 21:20:19 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:20 diminuendo-1 /usr/local/sbin/kamailio[26255]: ERROR: 
rtimer [rtimer_mod.c:192]: Fell out of route execution: 1343092820
Jul 23 21:20:22 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:24 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:25 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:25 diminuendo-1 /usr/local/sbin/kamailio[26255]: ERROR: 
rtimer [rtimer_mod.c:192]: Fell out of route execution: 1343092825
Jul 23 21:20:28 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:29 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:30 diminuendo-1 /usr/local/sbin/kamailio[26255]: ERROR: 
rtimer [rtimer_mod.c:192]: Fell out of route execution: 1343092830
Jul 23 21:20:31 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:35 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:35 diminuendo-1 /usr/local/sbin/kamailio[26255]: ERROR: 
rtimer [rtimer_mod.c:192]: Fell out of route execution: 1343092835
Jul 23 21:20:36 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:37 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1
Jul 23 21:20:38 diminuendo-1 /usr/local/sbin/kamailio[26254]: INFO: 
Presented time gap: 1

Shouldn't that while() loop in the script run to infinity? 
(max_while_loops is set to 0)

On 07/23/2012 09:12 PM, Alex Balashov wrote:

> I did an experiment to try to simplify the problem, and rule out mqueue
> concurrency/locking issues:
>
>     modparam("pv", "shvset", "lasttm=i:-1")
>
>     modparam("rtimer", "timer", "name=test;interval=1;mode=1")
>     modparam("rtimer", "exec", "timer=test;route=TEST_ROUTE")
>
>     route[TEST_ROUTE] {
>             while(1) {
>                     if($shv(lasttm) < 0)
>                             $shv(lasttm) = $TV(sn);
>                     else {
>                             $var(gap) = $TV(sn) - $shv(lasttm);
>
>                             if($var(gap) >= 1) {
>                                     xlog("L_INFO", "Presented time gap:
> $var(gap)\n");
>                             }
>                     }
>
>                     $shv(lasttm) = $TV(sn);
>             }
>     }
>
> And here's what I saw in the log:
>
> Jul 23 21:10:07 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:12 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:13 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:16 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:18 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:21 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:23 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:29 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:30 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:34 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:36 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:38 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:39 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:40 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
> Jul 23 21:10:43 diminuendo-1 /usr/local/sbin/kamailio[26073]: INFO:
> Presented time gap: 1
>
> When I repeated the experiment with interval=3:
>
> Jul 23 21:11:51 diminuendo-1 /usr/local/sbin/kamailio[26132]: INFO:
> Presented time gap: 1
> Jul 23 21:11:52 diminuendo-1 /usr/local/sbin/kamailio[26132]: INFO:
> Presented time gap: 1
> Jul 23 21:11:54 diminuendo-1 /usr/local/sbin/kamailio[26132]: INFO:
> Presented time gap: 1
> Jul 23 21:11:55 diminuendo-1 /usr/local/sbin/kamailio[26132]: INFO:
> Presented time gap: 1
> Jul 23 21:11:56 diminuendo-1 /usr/local/sbin/kamailio[26132]: INFO:
> Presented time gap: 1
> Jul 23 21:11:59 diminuendo-1 /usr/local/sbin/kamailio[26132]: INFO:
> Presented time gap: 1
> Jul 23 21:12:03 diminuendo-1 /usr/local/sbin/kamailio[26132]: INFO:
> Presented time gap: 1
> Jul 23 21:12:04 diminuendo-1 /usr/local/sbin/kamailio[26132]: INFO:
> Presented time gap: 1
>
> So, something is definitely interrupting the possibility of continuous
> execution of these rtimer tasks.
>


-- 
Alex Balashov - Principal
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