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Threads have long matured by now, still for most users their usage is not trivial. It's about time to enable them by default on platforms where we know the number of CPUs bound. This patch does this, it counts the number of CPUs the process is bound to upon startup, and enables as many threads by default. Of course, "nbthread" still overrides this, but if it's not set the default behaviour is to start one thread per CPU. The default number of threads is reported in "haproxy -vv". Simply using "taskset -c" is now enough to adjust this number of threads so that there is no more need for playing with cpu-map. And thanks to the previous patches on the listener, the vast majority of configurations will not need to duplicate "bind" lines with the "process x/y" statement anymore either, so a simple config will automatically adapt to the number of processors available. |
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