haproxy/doc
Valentine Krasnobaeva 41275a6918 MEDIUM: init: set default for fd_hard_limit via DEFAULT_MAXFD
Let's provide a default value for fd_hard_limit, if it's not set in the
configuration. With this patch we could set some specific default via
compile-time variable DEFAULT_MAXFD as well. Hope, this will be helpfull for
haproxy package maintainers.

    make -j 8 TARGET=linux-glibc DEBUG=-DDEFAULT_MAXFD=50000

If haproxy is comipled without DEFAULT_MAXFD defined, the default will be set
to 1048576.

This is done to avoid killing the process by its watchdog, while it started
without any limitations in its configuration or in the command line and the
hard RLIMIT_NOFILE is extremely huge (~1000000000). We use in this case
compute_ideal_maxconn() to calculate maxconn and maxsock, maxsock defines the
size of internal fdtab, which becames very-very large as well. When
the process starts to simply loop over this fdtab (0(n)), this takes a lot of
time, so watchdog does it job.

To avoid this, maxconn now is always reduced to some reasonable value either
by explicit global.fd-hard-limit from configuration, or by its default. The
default may be changed at build-time and overwritten then by
global.fd-hard-limit at runtime. Explicit global.fd-hard-limit from the
configuration has always precedence over DEFAULT_MAXFD, if set.

Must be backported in all stable versions until v2.6.0, including v2.6.0.
2024-07-04 07:52:42 +02:00
..
design-thoughts DOC: design: write first notes about ring-v2 2024-03-09 11:23:52 +01:00
internals [RELEASE] Released version 3.1-dev2 2024-06-29 11:28:41 +02:00
lua-api BUG/MINOR: hlua: use CertCache.set() from various hlua contexts 2024-06-03 17:00:00 +02:00
51Degrees-device-detection.txt DOC: 51d: updated 51Degrees repo URL for v3.2.10 2023-11-23 16:26:13 +01:00
acl.fig
architecture.txt DOC: fix a few remainig cases of "Haproxy" and "HAproxy" in doc and comments 2021-05-09 06:50:46 +02:00
coding-style.txt DOC: fix a few remainig cases of "Haproxy" and "HAproxy" in doc and comments 2021-05-09 06:50:46 +02:00
configuration.txt MEDIUM: init: set default for fd_hard_limit via DEFAULT_MAXFD 2024-07-04 07:52:42 +02:00
cookie-options.txt DOC: fix a few typos in the documentation 2018-11-18 22:23:15 +01:00
DeviceAtlas-device-detection.txt CLEANUP: assorted typo fixes in the code and comments 2024-03-05 11:50:34 +01:00
gpl.txt
haproxy.1 DOC: add description of pidfile in master-worker mode 2020-08-26 18:40:53 +02:00
HAProxyCommunityEdition_60px.png DOC: replace the README by a markdown version 2024-05-30 13:53:46 +02:00
intro.txt [RELEASE] Released version 3.1-dev0 2024-05-29 15:00:02 +02:00
lgpl.txt
linux-syn-cookies.txt DOC: add doc/linux-syn-cookies.txt 2015-08-11 12:17:41 +02:00
lua.txt [RELEASE] Released version 2.9-dev9 2023-11-04 09:38:16 +01:00
management.txt DOC: management: document ptr lookup for table commands 2024-06-19 10:28:10 +02:00
netscaler-client-ip-insertion-protocol.txt DOC: fix typos 2019-05-25 07:34:24 +02:00
network-namespaces.txt MAJOR: namespace: add Linux network namespace support 2014-11-21 07:51:57 +01:00
peers-v2.0.txt MEDIUM: stick-tables: add a new stored type for glitch_cnt and glitch_rate 2024-02-08 15:51:49 +01:00
peers.txt CLEANUP: assorted typo fixes in the code and comments 2022-12-07 09:08:18 +01:00
proxy-protocol.txt DOC: proxy-protocol: fix wrong byte in provided example 2023-02-12 09:26:48 +01:00
queuing.fig
regression-testing.txt CLEANUP: assorted typo fixes in the code and comments 2023-11-23 16:23:14 +01:00
seamless_reload.txt CLEANUP: removed obsolete examples an move a few to better places 2019-06-15 21:25:06 +02:00
SOCKS4.protocol.txt MEDIUM: connection: Upstream SOCKS4 proxy support 2019-05-31 17:24:06 +02:00
SPOE.txt MAJOR: spoe: Let the SPOE back into the game 2024-05-22 09:04:38 +02:00
WURFL-device-detection.txt CONTRIB: move src/wurfl.c and contrib/wurfl to addons/wurfl 2021-04-02 17:48:42 +02:00