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Willy Tarreau feeda4132b OPTIM: pools: use exponential back-off on shared pool allocation/release 
Running a stick-table stress with -dMglobal under 56 threads shows
extreme contention on the pool's free_list because it has to be
processed in two phases and only used to implement a cpu_relax() on
the retry path.

Let's at least implement exponential back-off here to limit the neighbor's
noise and reduce the time needed to successfully acquire the pointer. Just
doing so shows there's still contention but almost doubled the performance,
from 1.1 to 2.1M req/s.
2023-08-12 19:04:34 +02:00
.github CI: get rid of travis-ci wrapper for Coverity scan 2023-08-10 08:01:17 +02:00
addons MINOR: tree-wide: use free_acl_cond() where relevant 2023-05-11 15:37:04 +02:00
admin MINOR: acme.sh: add the deploy script for acme.sh in admin directory 2023-04-26 17:32:15 +02:00
dev DEV: add a Lua helper script for SSL keys logging 2023-05-24 16:08:23 +02:00
doc DOC: clarify the handling of URL fragments in requests 2023-08-08 19:56:41 +02:00
examples EXAMPLES: maintain haproxy 2.8 retrocompatibility for lua mailers script 2023-07-11 16:04:22 +02:00
include OPTIM: tools: improve hash distribution using a better prime seed 2023-08-12 19:04:34 +02:00
reg-tests BUG/MINOR: http: skip leading zeroes in content-length values 2023-08-09 11:28:48 +02:00
scripts SCRIPTS: publish-release: update the umask to keep group write access 2023-05-24 22:49:12 +02:00
src OPTIM: pools: use exponential back-off on shared pool allocation/release 2023-08-12 19:04:34 +02:00
tests TESTS: add a unit test for one_among_mask() 2022-06-21 20:29:57 +02:00
.cirrus.yml CI: cirrus-ci: bump FreeBSD image to 13-1 2023-04-23 09:44:53 +02:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore CONTRIB: Add vi file extensions to .gitignore 2023-06-02 18:14:34 +02:00
.mailmap DOC: update Tim's address in .mailmap 2021-09-16 09:14:14 +02:00
.travis.yml CI: travis-ci: temporarily disable arm64 builds 2021-08-07 07:28:15 +02:00
BRANCHES DOC: fix some spelling issues over multiple files 2021-01-08 14:53:47 +01:00
BSDmakefile BUILD: makefile: commit the tiny FreeBSD makefile stub 2023-05-24 17:17:36 +02:00
CHANGELOG [RELEASE] Released version 2.9-dev2 2023-07-21 20:29:42 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL DOC: install: Document how to build a limited support for QUIC 2023-07-21 20:27:13 +02:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS CLEANUP: assorted typo fixes in the code and comments 2022-11-30 14:02:36 +01:00
Makefile DEV: makefile: add a new "range" target to iteratively build all commits 2023-08-09 18:02:30 +02:00
README DOC: create a BRANCHES file to explain the life cycle 2019-06-15 22:00:14 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 2.9-dev2 2023-07-21 20:29:42 +02:00
VERSION [RELEASE] Released version 2.9-dev2 2023-07-21 20:29:42 +02:00

README 

The HAProxy documentation has been split into a number of different files for
ease of use.

Please refer to the following files depending on what you're looking for :

  - INSTALL for instructions on how to build and install HAProxy
  - BRANCHES to understand the project's life cycle and what version to use
  - LICENSE for the project's license
  - CONTRIBUTING for the process to follow to submit contributions

The more detailed documentation is located into the doc/ directory :

  - doc/intro.txt for a quick introduction on HAProxy
  - doc/configuration.txt for the configuration's reference manual
  - doc/lua.txt for the Lua's reference manual
  - doc/SPOE.txt for how to use the SPOE engine
  - doc/network-namespaces.txt for how to use network namespaces under Linux
  - doc/management.txt for the management guide
  - doc/regression-testing.txt for how to use the regression testing suite
  - doc/peers.txt for the peers protocol reference
  - doc/coding-style.txt for how to adopt HAProxy's coding style
  - doc/internals for developer-specific documentation (not all up to date)