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This function will be usable to purge at most a specified number of old entries from a reference. Entries are declared old if their generation number is in the past compared to the one passed in argument. This will ease removal of early entries when new ones have been appended. We also call malloc_trim() when available, at the end of the series, because this is one place where there is a lot of memory to save. Reloads of 1M IP addresses used in an ACL made the process grow up to 1.7 GB RSS after 10 reloads and roughly stabilize there without this call, versus only 260 MB when the call is present. Sadly there is no direct equivalent for jemalloc, which stabilizes around 800MB-1GB.
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)