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Russell Bryant 8dfcd7e418 Improve performance of the code handling the frame queue in chan_iax2. ... In my tests that exercised full frame handling in chan_iax2, the version with these changes took 30% to 40% of the CPU time compared to the same test of Asterisk trunk before these modifications. While doing some profiling for <http://reviewboard.digium.com/r/205/>, one function that caught my eye was network_thread() in chan_iax2.c. After the things that I was working on there, it was the next target for analysis and optimization. I used oprofile's source annotation functionality and found that the loop traversing the frame queue in network_thread() was to blame for the excessive CPU cycle consumption. The frame_queue in chan_iax2 previously held all frames that either were pending transmission or had been transmitted and are still pending acknowledgment. In network_thread(), the previous code would go back through the main for loop after reading a single incoming frame or after being signaled because a frame had been queued up for initial transmission. In each iteration of the loop, it traverses the entire frame queue looking for frames that need to be transmitted. On a busy server, this could easily be quite a few entries. This patch is actually quite simple. The frame_queue has become only a list of frames pending acknowledgment. Frames that need to be transmitted are queued up to a dedicated transmit thread via the taskprocessor API. As a result, the code in network_thread() becomes much simpler, as its only job is to read incoming frames. In addition to the previously described changes, this patch includes some additional changes to the frame_queue. Instead of one big frame_queue, now there is a list per call number to further reduce wasted list traversals. The biggest impact of this change is in socket_process(). For additional details on testing and test results, see the review request. Review: http://reviewboard.digium.com/r/212/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@185432 65c4cc65-6c06-0410-ace0-fbb531ad65f3		17 years ago
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h323	Fix build error when chan_h323 is not being built.	17 years ago
misdn	Merged revisions 185120 via svnmerge from	17 years ago
xpmr	Merged revisions 159025 via svnmerge from	17 years ago
Makefile	Simplify chan_h323 build to not require a second run of "make".	17 years ago
chan_agent.c	Merged revisions 171689 via svnmerge from	17 years ago
chan_alsa.c	Merged revisions 182810 via svnmerge from	17 years ago
chan_bridge.c	Merge phase 1 support for the new bridging architecture.	17 years ago
chan_console.c	This is basically a complete rollback of r155401, as it was determined that	17 years ago
chan_dahdi.c	Improve performance of the ast_event cache functionality.	17 years ago
chan_gtalk.c	Merged revisions 185362 via svnmerge from	17 years ago
chan_h323.c	Allow H.323 Plus library to be used in addition to the OpenH323 library	17 years ago
chan_iax2.c	Improve performance of the code handling the frame queue in chan_iax2.	17 years ago
chan_jingle.c	Create a new config file status, CONFIG_STATUS_FILEINVALID for differentiating	17 years ago
chan_local.c	Merged revisions 182208 via svnmerge from	17 years ago
chan_mgcp.c	Improve performance of the ast_event cache functionality.	17 years ago
chan_misdn.c	Removed trailing whitespace in chan_misdn files.	17 years ago
chan_nbs.c	one more place I forgot	18 years ago
chan_oss.c	Merged revisions 171187 via svnmerge from	17 years ago
chan_phone.c	Silence a build warning. (chan_phone.c:810: warning: value computed is not used)	17 years ago
chan_phone.h	rename DialTone.h to chan_phone.h because chan_phone.c is the only file using it	18 years ago
chan_sip.c	Merged revisions 184947 via svnmerge from	17 years ago
chan_skinny.c	Merged revisions 182810 via svnmerge from	17 years ago
chan_unistim.c	Improve performance of the ast_event cache functionality.	17 years ago
chan_usbradio.c	Janitor, use ARRAY_LEN() when possible.	17 years ago
chan_vpb.cc	incorporates r159808 from branches/1.4:	17 years ago
console_board.c	import the recent additions for video console into trunk,	18 years ago
console_gui.c	(closes issue #13557)	17 years ago
console_video.c	(closes issue #13557)	17 years ago
console_video.h	implement the 'freeze' function for incoming frames;	18 years ago
iax2-parser.c	Merge ast_str_opaque branch (discontinue usage of ast_str internals)	17 years ago
iax2-parser.h	Merged revisions 181340 via svnmerge from	17 years ago
iax2-provision.c	- iax2-provision was not freeing iax_templates structure when unloading the chan_iax2.so module.	17 years ago
iax2-provision.h	Don't reload a configuration file if nothing has changed.	18 years ago
iax2.h	Fixed iax2 key rotation backwards compatibility	17 years ago
misdn_config.c	Merged revisions 185121 via svnmerge from	17 years ago
vcodecs.c	(closes issue #13557)	17 years ago
vgrabbers.c	free memory used by the x11 grabber when closing it.	17 years ago