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On todays large systems, it's not always desired to run on all threads for light loads, and usually users enforce nbthread to a lower value (e.g. 8). The problem is that this is a fixed value, and moving such configs to smaller machines continues to enforce the value and this becomes extremely unproductive due to having more threads than CPUs. This also happens quite a bit in VMs, containers, or cloud instances of various sizes. This commit introduces the thread-hard-limit setting that allows to only set an upper bound to the number of threads without raising a lower value. This means that using "thread-hard-limit 8" will make sure that no more than 8 threads will be used when available, but it will remain two when run on a dual-core machine.
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)