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Willy Tarreau c9cbfcb179 MEDIUM: dynbuf: use emergency buffers upon failed memory allocations
Now, if a pool_alloc() fails for a buffer and if conditions are met
based on the queue number, we'll try to get an emergency buffer.

Thanks to this the situation is way more stable now. With only 4 reserve
buffers and 1 buffer it's possible to reliably serve 500 concurrent end-
to-end H1 connections and consult stats in parallel in loops showing the
growing number of buf_wait events in "show activity" without facing an
instant stall like in the past. Lower values still cause quick stalls
though.

It's also apparent that some subsystems do not seem to detach from the
buffer_wait lists when leaving. For example several crashes in the H1
part showed list elements still present after a free(), so maybe some
operations performed inside h1_release() after the b_dequeue() call
can sometimes result in a new allocation. Same for streams, where
the dequeue is done relatively early.
2024-05-08 17:17:56 +02:00
.github CI: netbsd: limit scheduled workflow to parent repo only 2024-05-06 08:26:14 +02:00
addons MINOR: stats: define stats-file output format support 2024-04-26 10:20:57 +02:00
admin BUILD: address a few remaining calloc(size, n) cases 2024-02-10 11:37:27 +01:00
dev DEV: flags/peers: Decode PEER and PEERS flags 2024-04-25 18:29:58 +02:00
doc MEDIUM: dynbuf: implement emergency buffers 2024-05-08 17:17:35 +02:00
examples CLEANUP: assorted typo fixes in the code and comments 2023-11-23 16:23:14 +01:00
include MEDIUM: dynbuf: use emergency buffers upon failed memory allocations 2024-05-08 17:17:56 +02:00
reg-tests BUG/MINOR: cfgparse: use curproxy global var from config post validation 2024-05-06 18:45:47 +02:00
scripts REGTESTS: use -dI for insecure fork by default in the regtest scripts 2024-04-22 16:15:57 +02:00
src MEDIUM: dynbuf: implement emergency buffers 2024-05-08 17:17:35 +02:00
tests MINOR: ist: define iststrip() new function 2024-04-26 11:29:25 +02:00
.cirrus.yml CI: cirrus-ci: display gdb bt if any 2023-09-22 08:28:30 +02:00
.gitattributes
.gitignore CONTRIB: Add vi file extensions to .gitignore 2023-06-02 18:14:34 +02:00
.mailmap
.travis.yml
BRANCHES
BSDmakefile BUILD: makefile: commit the tiny FreeBSD makefile stub 2023-05-24 17:17:36 +02:00
CHANGELOG [RELEASE] Released version 3.0-dev10 2024-05-04 10:16:05 +02:00
CONTRIBUTING
INSTALL DOC: install: clarify the build process by splitting it into subsections 2024-04-11 18:02:26 +02:00
LICENSE
MAINTAINERS MAJOR: spoe: Deprecate the SPOE filter 2024-03-15 11:29:39 +01:00
Makefile REORG: stats: define stats-proxy source module 2024-05-02 16:42:36 +02:00
README
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VERDATE [RELEASE] Released version 3.0-dev10 2024-05-04 10:16:05 +02:00
VERSION [RELEASE] Released version 3.0-dev10 2024-05-04 10:16:05 +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)