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HAProxy - Load balancer
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Amaury Denoyelle 7c5591facb BUG/MEDIUM: mux-quic: improve streams fairness to prevent early timeout 
Since the following mentioned patch, a send-list mechanism was
implemented to improve streams priorization on sending.
  commit 20f2a425ff
  MAJOR: mux-quic: rework stream sending priorization

This is done to prevent the same streams to always be used as first ones
on emission. However there is still a flaw on the algorithm. Once put in
the send-list, a streams is not removed until it has sent all of its
content. When a stream transfers a large object, it will remain in the
send-list during all the transfer and will soon monopolize the first
place. the stream does never leave its position until the transfer is
finished and will monopolize the first place. Other streams behind won't
have the opportunity to advance on their own transfers due to a Tx
buffer exhaustion.

This situation is especially problematic if a small timeout client is
used. As some streams won't advance on their transfer for a long period
of time, they will be aborted due to a stream layer timeout client
causing a RESET_STREAM emission.

To fix this, during sending each stream with at least some bytes
transferred from its tx.buf to qc_stream_desc out buffer is put at the
end of the send-list. This ensures that on the next iteration streams
that cannot transfer anything will be used in priority.

This patch improves significantly h2load benchmarks for large objects
with several streams opened in parallel on a single connection. Without
it, errors may be reported by h2load for aborted streams. For example,
this improved the following scenario on a 10mbit/s link with a 10s
timeout client :
  $ ./build/bin/h2load --npn-list h3 -t 1 -c 1 -m 30 -n 30 https://198.18.10.11:20443/?s=500k

This fix may help with the github issue #2004 where chrome browser stop
to use QUIC after receiving RESET_STREAM frames.

This should be backported up to 2.7.
2023-04-26 17:50:16 +02:00
.github CI: extend spellchecker whitelist, add "clen" as well 2023-04-23 09:44:53 +02:00
addons CLEANUP: opentracing: remove the last two occurrences of strncat() 2023-04-07 18:14:28 +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: h2: support reading frame payload from a file 2023-04-26 11:36:02 +02:00
doc [RELEASE] Released version 2.8-dev8 2023-04-23 10:21:37 +02:00
examples EXAMPLES: add basic event_hdl lua example script 2023-04-05 09:02:14 +02:00
include BUG/MEDIUM: mux-quic: do not emit RESET_STREAM for unknown length 2023-04-26 17:50:09 +02:00
reg-tests REGTESTS: remove unsupported "stats bind-process" keyword 2023-04-23 09:44:53 +02:00
scripts SCRIPTS: run-regtests: add a version check 2022-11-30 18:44:33 +01:00
src BUG/MEDIUM: mux-quic: improve streams fairness to prevent early timeout 2023-04-26 17:50:16 +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 CLEANUP: exclude udp-perturb with .gitignore 2022-09-16 15:47:04 +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
CHANGELOG [RELEASE] Released version 2.8-dev8 2023-04-23 10:21:37 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL MINOR: version: mention that it's development again 2022-12-01 15:24:10 +01:00
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 MINOR: quic: Add a fake congestion control algorithm named "nocc" 2023-03-31 17:09:03 +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 2.8-dev8 2023-04-23 10:21:37 +02:00
VERSION [RELEASE] Released version 2.8-dev8 2023-04-23 10:21:37 +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)