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The run queue offset computed from the nice value depends on the run queue size, but for the first task to enter the run queue, this size is zero and the task gets queued just as if its nice value was zero as well. This is problematic for example for the CLI socket if another higher priority task gets queued immediately after as it can steal its place. This patch simply adds one to the rq_size value to make sure the nice is never multiplied by zero. The way the offset is calculated is questionable anyway these days, since with the newer scheduler it seems that just using the nice value as an offset should work (possibly damped by the task's number of calls). This fix must be backported to 1.9. It may possibly be backported to older versions if it proves to make the CLI more interactive.
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 - 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)