You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

Matthew Jordan 9cc1a8e893 stasis: Reduce creation of channel snapshots to improve performance ... During some performance testing of Asterisk with AGI, ARI, and lots of Local channels, we noticed that there's quite a hit in performance during channel creation and releasing to the dialplan (ARI continue). After investigating the performance spike that occurs during channel creation, we discovered that we create a lot of channel snapshots that are technically unnecessary. This includes creating snapshots during: * AGI execution * Returning objects for ARI commands * During some Local channel operations * During some dialling operations * During variable setting * During some bridging operations And more. This patch does the following: - It removes a number of fields from channel snapshots. These fields were rarely used, were expensive to have on the snapshot, and hurt performance. This included formats, translation paths, Log Call ID, callgroup, pickup group, and all channel variables. As a result, AMI Status, "core show channel", "core show channelvar", and "pjsip show channel" were modified to either hit the live channel or not show certain pieces of data. While this is unfortunate, the performance gain from this patch is worth the loss in behaviour. - It adds a mechanism to publish a cached snapshot + blob. A large number of publications were changed to use this, including: - During Dial begin - During Variable assignment (if no AMI variables are emitted - if AMI variables are set, we have to make snapshots when a variable is changed) - During channel pickup - When a channel is put on hold/unhold - When a DTMF digit is begun/ended - When creating a bridge snapshot - When an AOC event is raised - During Local channel optimization/Local bridging - When endpoint snapshots are generated - All AGI events - All ARI responses that return a channel - Events in the AgentPool, MeetMe, and some in Queue - Additionally, some extraneous channel snapshots were being made that were unnecessary. These were removed. - The result of ast_hashtab_hash_string is now cached in stasis_cache. This reduces a large number of calls to ast_hashtab_hash_string, which reduced the amount of time spent in this function in gprof by around 50%. #ASTERISK-23811 #close Reported by: Matt Jordan Review: https://reviewboard.asterisk.org/r/3568/ ........ Merged revisions 416211 from http://svn.asterisk.org/svn/asterisk/branches/12 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@416216 65c4cc65-6c06-0410-ace0-fbb531ad65f3		12 years ago
..
include	res_pjsip: Enable PJSIP DNS client support.	12 years ago
config_auth.c	pjsip_cli: Create pjsip show channel and contact, and general cli code cleanup.	12 years ago
config_domain_aliases.c	res_pjsip: Updates and adds more PJSIP CLI commands.	12 years ago
config_global.c	res_pjsip: Updates and adds more PJSIP CLI commands.	12 years ago
config_system.c	Prevent duplicate sorcery wizards from being applied to sorcery object types.	12 years ago
config_transport.c	Allow Asterisk to compile under GCC 4.10	12 years ago
location.c	Allow Asterisk to compile under GCC 4.10	12 years ago
pjsip_cli.c	pjsip_cli: Create pjsip show channel and contact, and general cli code cleanup.	12 years ago
pjsip_configuration.c	stasis: Reduce creation of channel snapshots to improve performance	12 years ago
pjsip_distributor.c	PJSIP: Add Path header support	12 years ago
pjsip_global_headers.c	…
pjsip_options.c	res_pjsip: Handle reloading when permanent contacts exist and qualify is configured.	12 years ago
pjsip_outbound_auth.c	res_pjsip: Ignore 401/407 responses for transactions and dialogs we don't know about.	12 years ago
presence_xml.c	Improve XML sanitization in NOTIFYs, especially for presence subtypes and messages.	12 years ago
security_events.c	Remove unused RAII_VAR() declarations.	12 years ago