e2631ee5f7
In continuity of previous patch, this one makes use of the new profiling flags. For this, based on the global "profiling" setting, when switching profiling on, we set or clear two flags on the thread context, TH_FL_TASK_PROFILING_L and TH_FL_TASK_PROFILING_M to indicate whether lock profiling and/or malloc profiling are desired when profiling is enabled. These flags are checked along with TH_FL_TASK_PROFILING to decide when to collect time around a lock or a malloc. And by default we're back to the behavior of 3.2 in that neither lock nor malloc times are collected anymore. This is sufficient to see the CPU usage spent in the VDSO to significantly drop from 22% to 2.2% on a highly loaded system. This should be backported to 3.3 along with the previous patch.
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.