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55a0975b1e
update_freq_ctr_period() was using relaxed atomics without using barriers, which usually works fine on x86 but not everywhere else. In addition, some values were read without being enclosed by barriers, allowing the compiler to possibly prefetch them a bit earlier. Finally, freq_ctr_total() was also reading these without enough barriers. Let's make explicit use of atomic loads and atomic stores to get rid of this situation. This required to slightly rearrange the freq_ctr_total() loop, which could possibly slightly improve performance under extreme contention by avoiding to reread all fields. A backport may be done to 2.4 if a problem is encountered, but last tests on arm64 with LSE didn't show any issue so this can possibly stay as-is. |
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| addons | ||
| admin | ||
| dev | ||
| doc | ||
| examples | ||
| include | ||
| reg-tests | ||
| scripts | ||
| src | ||
| tests | ||
| .cirrus.yml | ||
| .gitattributes | ||
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| .travis.yml | ||
| BRANCHES | ||
| CHANGELOG | ||
| CONTRIBUTING | ||
| INSTALL | ||
| LICENSE | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| ROADMAP | ||
| SUBVERS | ||
| VERDATE | ||
| VERSION | ||
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)