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ad14c2681b
The trace() function is convenient to avoid calling trace() when traces are not enabled, but there starts to be some callers which place complex expressions in their trace calls, which results in all of them to be evaluated before being passed as arguments to the trace() function. This needlessly wastes precious CPU cycles. Let's change the function for a macro, so that the arguments are now only evaluated when the surce has traces enabled. However having a generic macro being called "trace()" can easily cause conflicts with innocent code so we rename it "_trace". Just doing this has resulted in a 2.5% increase of the HTTP/1 request rate.
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)