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HAProxy - Load balancer
58bc9c1ced
This function doesn't change the tree, it only looks for the first usable server, so let's do that under a read lock to limit the situations like the ones described in issue #881 where finding a usable server when dealing with lots of saturated ones can be expensive. At least threads will now be able to look up in parallel. It's interesting to note that s->served is not incremented during the server choice, nor is the server repositionned. So right now already, nothing prevents multiple threads from picking the same server. This will not cause a significant imbalance anyway given that the server will automatically be repositionned at the right place, but this might be something to improve in the future if it doesn't come with too high a cost. It also looks like the way a server's weight is updated could be revisited so that the write lock gets tighter at the expense of a short part of inconsistency between weights and servers still present in the tree. |
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| .cirrus.yml | ||
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| BRANCHES | ||
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| INSTALL | ||
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| 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)