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If we've stopped consulting the local wait queue due to too many tasks (max_processed <= 0), there's no point starting to lock the shared WQ, check the first task's expiration date, upgrading the lock just to refrain from doing the work because of the limit. All this does is increase contention on an already contended system. Note that there is still a fairness issue in this WQ dequeuing code. If each thread is busy with expired tasks, no thread will dequeue the global ones. In practice it doesn't make much sense and should quickly resorb, but it could be nice to have an alternating flag indicating where to start from on next call to improve this. |
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| src | ||
| tests | ||
| .cirrus.yml | ||
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| BRANCHES | ||
| CHANGELOG | ||
| CONTRIBUTING | ||
| INSTALL | ||
| LICENSE | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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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)