425d7ad89d
The Linux kernel maintains data structures to track a processes' open file descriptors, and it expands these structures as necessary when FD usage grows (at every FD=2^X starting at 64). However when threading is in use, during expansion the kernel will pause (observed up to 47ms) while it waits for thread synchronization (see https://bugzilla.kernel.org/show_bug.cgi?id=217366). This change addresses the issue and avoids the random pauses by opening the maximum file descriptor during initialization, so that expansion will not occur while processing traffic.
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)