c6ba9a0b9b
The runqueue_ticks counts the number of task wakeups and is used to position new tasks in the run queue, but since we've had per-thread run queues, the values there are not very relevant anymore and the nice value doesn't apply well if some threads are more loaded than others. In addition, letting all threads compete over a shared counter is not smart as this may cause some excessive contention. Let's move this index close to the run queues themselves, i.e. one per thread and a global one. In addition to improving fairness, this has increased global performance by 2% on 16 threads thanks to the lower contention on rqueue_ticks. Fairness issues were not observed, but if any were to be, this patch could be backported as far as 2.0 to address them.
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)