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Summary:ASTERISK-26088: Investigate heavy memory utilization by res_pjsip_pubsub
Reporter:Richard Mudgett (rmudgett)Labels:
Date Opened:2016-06-06 11:57:07Date Closed:2016-06-09 16:47:11
Priority:MajorRegression?
Status:Closed/CompleteComponents:Core/Sorcery Core/Stasis Resources/res_pjsip Resources/res_pjsip_pubsub Resources/res_pjsip_registrar
Versions:13.9.1 Frequency of
Occurrence
Related
Issues:
is related toASTERISK-26089 Invalid security events during boot using PJSIP Realtime
is related toASTERISK-26998 res_pjsip_session: INVITE retransmissions could still setup the same call again.
Environment:Attachments:
Description:Under *heavy* subscribe/unsubscribe load Asterisk will keep consuming memory until the process runs out of memory.

Using a sipp scenario that does the following for each user:
# REGISTER
# SUBSCRIBE to 8 extens
# wait
# unSUBSCRIBE from those extens
# unREGISTER

When simulating a lot of user endpoints the system taskprocessors get backed up.  This can be seen by running CLI "core show taskprocessors" and watching several taskprocessors get backlogged.

Another thing noticed during investigation is that these messages were seen a lot:
{noformat}
sip_transactio Unable to register REGISTER transaction (key exists)
sip_transactio Unable to register SUBSCRIBE transaction (key exists)
{noformat}
Comments:By: Friendly Automation (friendly-automation) 2017-05-17 11:32:54.205-0500

Change 5632 merged by Jenkins2:
res_pjsip_session.c: Process initial INVITE sooner. (key exists)

[https://gerrit.asterisk.org/5632|https://gerrit.asterisk.org/5632]
By: Friendly Automation (friendly-automation) 2017-05-17 11:40:51.247-0500

Change 5631 merged by Jenkins2:
res_pjsip_session.c: Process initial INVITE sooner. (key exists)

[https://gerrit.asterisk.org/5631|https://gerrit.asterisk.org/5631]
By: Friendly Automation (friendly-automation) 2017-05-17 11:41:57.155-0500

Change 5630 merged by Jenkins2:
res_pjsip_session.c: Process initial INVITE sooner. (key exists)

[https://gerrit.asterisk.org/5630|https://gerrit.asterisk.org/5630]