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res_pjsip_mwi: fix unsolicited mwi blocks PJSIP stack

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The PJSIP taskprocessors could be overflowed on startup
if there are many (thousands) realtime endpoints
configured with unsolicited mwi.
The PJSIP stack could be totally unresponsive for a few minutes
after boot completed.

This patch creates a separate PJSIP serializers pool for mwi
and makes unsolicited mwi use serializers from this pool.
This patch also adds 2 new global options to tune taskprocessor
alert levels: 'mwi_tps_queue_high' and 'mwi_tps_queue_low'.

This patch also adds new global option 'mwi_disable_initial_unsolicited'
to disable sending unsolicited mwi to all endpoints on startup.
If disabled then unsolicited mwi will start processing
on next endpoint's contact update.

ASTERISK-26230 #close

Change-Id: I4c8ecb82c249eb887930980a800c9f87f28f861a
This commit is contained in:
Alexei Gradinari
2016-08-08 13:53:32 -04:00
parent bf21359292
commit a06a1af0eb
7 changed files with 333 additions and 6 deletions
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21
configs/samples/pjsip.conf.sample
View File

@@ -956,6 +956,27 @@
; set to this value if there is no better option (such as
; auth/realm) to be used
; Asterisk Task Processor Queue Size
; On heavy loaded system with DB storage you may need to increase
; taskprocessor queue.
; If the taskprocessor queue size reached high water level,
; the alert is triggered.
; If the alert is set the pjsip distibutor stops processing incoming
; requests until the alert is cleared.
; The alert is cleared when taskprocessor queue size drops to the
; low water clear level.
; The next options set taskprocessor queue levels for MWI.
;mwi_tps_queue_high=500 ; Taskprocessor high water alert trigger level.
;mwi_tps_queue_low=450 ; Taskprocessor low water clear alert level.
; The default is -1 for 90% of high water level.
; Unsolicited MWI
; If there are endpoints configured with unsolicited MWI
; then res_pjsip_mwi module tries to send MWI to all endpoints on startup.
;mwi_disable_initial_unsolicited=no ; Disable sending unsolicited mwi to all endpoints on startup.
; If disabled then unsolicited mwi will start processing
; on the endpoint's next contact update.
; MODULE PROVIDING BELOW SECTION(S): res_pjsip_acl
;==========================ACL SECTION OPTIONS=========================
;[acl]