282b9b7d16
Self-waking tasklets are currently punished and go to the BULK list. However it's a problem with muxes or the stick-table purge that just yield and wake themselves up to limit the latency they cause to the rest of the process, because by doing so to help others, they punish themselves. Let's check if any TASK_WOKEN_ANY flag is present on the tasklet and stop sending tasks presenting such a flag to TL_BULK. Since tasklet_wakeup() by default passes TASK_WOKEN_OTHER, it means that such tasklets will no longer be punished. However, tasks which only want a best-effort wakeup can simply pass 0. It's worth noting that a comparison was made between going into TL_BULK at all and only setting the TASK_SELF_WAKING flag, and it shows that the average latencies are ~10% better when entirely avoiding TL_BULK in this case.
HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
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)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.