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Russell Bryant 429e148ebf Merged revisions 184339 via svnmerge from ... https://origsvn.digium.com/svn/asterisk/trunk ........ r184339 | russell | 2009-03-25 16:57:19 -0500 (Wed, 25 Mar 2009) | 35 lines Improve performance of the ast_event cache functionality. This code comes from svn/asterisk/team/russell/event_performance/. Here is a summary of the changes that have been made, in order of both invasiveness and performance impact, from smallest to largest. 1) Asterisk 1.6.1 introduces some additional logic to be able to handle distributed device state. This functionality comes at a cost. One relatively minor change in this patch is that the extra processing required for distributed device state is now completely bypassed if it's not needed. 2) One of the things that I noticed when profiling this code was that a _lot_ of time was spent doing string comparisons. I changed the way strings are represented in an event to include a hash value at the front. So, before doing a string comparison, we do an integer comparison on the hash. 3) Finally, the code that handles the event cache has been re-written. I tried to do this in a such a way that it had minimal impact on the API. I did have to change one API call, though - ast_event_queue_and_cache(). However, the way it works now is nicer, IMO. Each type of event that can be cached (MWI, device state) has its own hash table and rules for hashing and comparing objects. This by far made the biggest impact on performance. For additional details regarding this code and how it was tested, please see the review request. (closes issue #14738) Reported by: russell Review: http://reviewboard.digium.com/r/205/ ........ git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@184342 65c4cc65-6c06-0410-ace0-fbb531ad65f3		16 years ago
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ael	Merged revisions 177286 via svnmerge from	16 years ago
ais	Merged revisions 184339 via svnmerge from	16 years ago
snmp	Merged revisions 174149 via svnmerge from	16 years ago
Makefile	Merged revisions 157974 via svnmerge from	17 years ago
res_adsi.c	All of the res/ stuff (other than res_jabber) from the RSW branch.	17 years ago
res_ael_share.c	remove a bunch of useless #include "options.h"	18 years ago
res_agi.c	Merged revisions 182847 via svnmerge from	16 years ago
res_ais.c	Merged revisions 179164 via svnmerge from	16 years ago
res_clioriginate.c	Merged revisions 102378 via svnmerge from	17 years ago
res_config_curl.c	Separate the global initialization routines for cURL into its own separate	17 years ago
res_config_ldap.c	All of the res/ stuff (other than res_jabber) from the RSW branch.	17 years ago
res_config_odbc.c	Merged revisions 172131 via svnmerge from	16 years ago
res_config_pgsql.c	git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@145125 65c4cc65-6c06-0410-ace0-fbb531ad65f3	17 years ago
res_config_sqlite.c	Oops, merge from trunk broke 1.6.1	16 years ago
res_convert.c	include "logger.h" and errno.h from asterisk.h - usage shows that they	18 years ago
res_crypto.c	import gcc 4.3.2 warning fixes from trunk, with a few changes specific to this branch	17 years ago
res_curl.c	Separate the global initialization routines for cURL into its own separate	17 years ago
res_http_post.c	Merged revisions 168588 via svnmerge from	17 years ago
res_indications.c	Merged revisions 168562 via svnmerge from	17 years ago
res_jabber.c	import gcc 4.3.2 warning fixes from trunk, with a few changes specific to this branch	17 years ago
res_limit.c	Janitor project to convert sizeof to ARRAY_LEN macro.	17 years ago
res_monitor.c	Merged revisions 183766 via svnmerge from	16 years ago
res_musiconhold.c	Merged revisions 181665 via svnmerge from	16 years ago
res_odbc.c	Merged revisions 176592,176642 via svnmerge from	16 years ago
res_phoneprov.c	Merged revisions 168142 via svnmerge from	17 years ago
res_realtime.c	Merged revisions 165318 via svnmerge from	17 years ago
res_smdi.c	Merged revisions 146802 via svnmerge from	17 years ago
res_snmp.c	remove a bunch of useless #include "options.h"	18 years ago
res_speech.c	remove a bunch of useless #include "options.h"	18 years ago
res_timing_dahdi.c	Merged revisions 179937 via svnmerge from	16 years ago
res_timing_pthread.c	Merged revisions 176666 via svnmerge from	16 years ago