Any update on this?
I am also facing same issue using XML dialplan when CPS is above 50.

On Tue, Mar 12, 2019 at 3:27 AM Brian West <brian@freeswitch.com> wrote:
Can you email me a full working sample that can trigger this scenario?

/b


On Mon, Mar 11, 2019 at 3:32 PM Grant Bagdasarian <gb@cm.nl> wrote:

Hi Brian,

 

The following string (some fields changed for security reasons) is passed to the freeswitch.Session function for originating the call.

{originate_timeout='60',ignore_early_media='false',origination_uuid='b4cd3cec-ba43-4e52-82eb-6f8ac11f6850',origination_caller_id_name='XXXXXXXXXXXXX',origination_caller_id_number='XXXXXXXXXXXXX',return_ring_ready='true',sip_cid_type='pid',origination_privacy='hide_name:screen',sip_h_X-Custom-Header1 ='1111',sip_h_X-Custom-Header2='222',sip_h_X-Custom-Header3 ='abcde',sip_h_X-Custom-Header4='1'}sofia/local_eth0/XXXXXXXXX@X.X.X.X:5060"

 

We actually pass a JSON object to the pyrun application as arguments which contains more data we need during the call, like which files to play, etc.

The Originate String above is contained inside this JSON. Please let me know to which originateCommand you were referring.

 

Are the origination variables treated as extensions? The X-Customer-Headers may vary in amount passed (Usually 4 or 5), the rest of the variables are always there, sometimes with different values.

 

Thanks and regards,

 

Grant

 

From: FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org> On Behalf Of Brian West
Sent: maandag 11 maart 2019 18:27
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] too many stacked extensions

 

What are you passing in originateCommand?

 

/b

 

 

On Mon, Mar 11, 2019 at 8:00 AM Grant Bagdasarian <gb@cm.nl> wrote:

Hello,

 

We’ve recently upgraded some of our servers to 1.8.5 and are now occasionally experiencing the error “too many stacked extensions” for some calls.

According to Jira this has been patched since 1.8.1, but perhaps this is due to some other scenario being triggered.

 

We’re using ESL (bgapi command) to spawn a python script which in turn does an originate.

 

See below a snippet of the cli output.

As far as I can tell, this doesn’t have any real consequences resource consumption wise (CPU and memory), only the disk will get hammered in the case when logging to syslog.

Also, I haven’t been able to reproduce this myself, but I’m still in the process of doing more testing.

It seems to be happening before the call is connected to the destination.

 

Any ideas how to properly debug this and find out what’s triggering this?

I’ve tried the following:

  • Monitoring all ESL events
  • fsctl debug_level 10
  • sofia loglevel all 9

 

They all output a lot of debugging information, which does get overwhelming.

 

In a nutshell, this is the flow:

ESL:

bgapi pyrun app originateCommand

 

Python:

session = freeswitch.Session(originateCommand)

session.execute("wait_for_answer")

session.streamFile(file)

 

2019-03-11 12:58:08.133457 [ALERT] switch_core_session.c:1047 Send signal sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 [BREAK]

2019-03-11 12:58:08.133457 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.133457 [ALERT] switch_core_state_machine.c:705 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 session thread wake state: CS_SOFT_EXECUTE!

2019-03-11 12:58:08.133457 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.133457 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.133457 [ALERT] switch_core_state_machine.c:701 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 session thread sleep state: CS_SOFT_EXECUTE!

2019-03-11 12:58:08.153454 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.173495 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.193453 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.213458 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.233455 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.253489 [ALERT] switch_core_session.c:1047 Send signal sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 [BREAK]

2019-03-11 12:58:08.253489 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.253489 [ALERT] switch_core_state_machine.c:705 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 session thread wake state: CS_SOFT_EXECUTE!

2019-03-11 12:58:08.253489 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.253489 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.253489 [ALERT] switch_core_state_machine.c:701 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 session thread sleep state: CS_SOFT_EXECUTE!

2019-03-11 12:58:08.273448 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.293454 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.313459 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.333443 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.353456 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.373450 [ALERT] switch_core_session.c:1047 Send signal sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 [BREAK]

2019-03-11 12:58:08.373450 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.373450 [ALERT] switch_core_state_machine.c:705 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 session thread wake state: CS_SOFT_EXECUTE!

2019-03-11 12:58:08.373450 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.373450 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.373450 [ALERT] switch_core_state_machine.c:701 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 session thread sleep state: CS_SOFT_EXECUTE!

2019-03-11 12:58:08.393440 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.413450 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.433452 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.453461 [ERR] switch_ivr.c:904 Error sofia/local_eth0/00393421615027@10.14.26.10:5060 too many stacked extensions

2019-03-11 12:58:08.473474 [ALERT] switch_core_session.c:1047 Send signal sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 [BREAK]

2019-03-11 12:58:08.473474 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.473474 [ALERT] switch_core_state_machine.c:705 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 session thread wake state: CS_SOFT_EXECUTE!

2019-03-11 12:58:08.473474 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.473474 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.473474 [ALERT] switch_core_state_machine.c:701 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 session thread sleep state: CS_SOFT_EXECUTE!

2019-03-11 12:58:08.493452 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.513447 [ALERT] switch_rtp.c:7695 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio timeout

2019-03-11 12:58:08.513447 [ALERT] switch_rtp.c:1584 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio stat 99.00 301/302 flaws: 1 mos: 4.49 v: 0.11 0.11/1.78

2019-03-11 12:58:08.513447 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.533439 [ALERT] switch_rtp.c:7695 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio timeout

2019-03-11 12:58:08.533439 [ALERT] switch_rtp.c:1565 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio 2 consecutive flaws, adding 2 flaw penalty

2019-03-11 12:58:08.533439 [ALERT] switch_rtp.c:1584 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio stat 98.00 298/302 flaws: 4 mos: 4.48 v: 0.11 0.11/1.78

2019-03-11 12:58:08.533439 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.553450 [ALERT] switch_rtp.c:7695 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio timeout

2019-03-11 12:58:08.553450 [ALERT] switch_rtp.c:1565 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio 3 consecutive flaws, adding 2 flaw penalty

2019-03-11 12:58:08.553450 [ALERT] switch_rtp.c:1584 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio stat 97.00 295/302 flaws: 7 mos: 4.47 v: 0.11 0.11/1.78

2019-03-11 12:58:08.553450 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.573441 [ALERT] switch_rtp.c:7695 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio timeout

2019-03-11 12:58:08.573441 [ALERT] switch_rtp.c:1565 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio 4 consecutive flaws, adding 2 flaw penalty

2019-03-11 12:58:08.573441 [ALERT] switch_rtp.c:1584 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio stat 96.00 292/302 flaws: 10 mos: 4.46 v: 0.11 0.11/1.78

2019-03-11 12:58:08.573441 [ERR] switch_ivr.c:904 Error sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 too many stacked extensions

2019-03-11 12:58:08.593450 [ALERT] switch_rtp.c:7695 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio timeout

2019-03-11 12:58:08.593450 [ALERT] switch_rtp.c:1565 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio 5 consecutive flaws, adding 2 flaw penalty

2019-03-11 12:58:08.593450 [ALERT] switch_rtp.c:1584 sofia/local_eth0/XXXXXXXXXX@X.X.X.X:5060 audio stat 95.00 289/302 flaws: 13 mos: 4.44 v: 0.11 0.11/1.78

 

Regards,

 

Grant

_________________________________________________________________________
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--

 

Brian West | Co-founder and Developer

Need Commercial support? email sales@freeswitch.com

FreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045

Email: brian@freeswitch.com

Mobile: 918-424-9378

Website: https://www.FreeSWITCH.com

https://www.facebook.com/signalwireinc?src=emailhttps://twitter.com/freeswitch

Please be cautious

This email was sent outside of your organisation

_________________________________________________________________________
Professional FreeSWITCH Services
sales@freeswitch.com
https://freeswitch.com

Official FreeSWITCH Sites
https://freeswitch.com/oss
https://freeswitch.org/confluence
https://cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
https://freeswitch.com


--

Brian West | Co-founder and Developer

Need Commercial support? email sales@freeswitch.com

FreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045

Email: brian@freeswitch.com

Mobile: 918-424-9378

Website: https://www.FreeSWITCH.com

https://www.facebook.com/signalwireinc?src=email https://twitter.com/freeswitch

_________________________________________________________________________
Professional FreeSWITCH Services
sales@freeswitch.com
https://freeswitch.com

Official FreeSWITCH Sites
https://freeswitch.com/oss
https://freeswitch.org/confluence
https://cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
https://freeswitch.com


--
Thanks,

Sagar