a9a2f98f86
The windowed filters are used only the BBR implementation for QUIC to filter the maximum bandwidth samples for its estimation over a virtual time interval tracked by counting the cyclical progression through ProbeBW cycles. ngtcp2 and quiche use such windowed filters in their BBR implementation. But in a slightly different way. When updating the 2nd or 3rd filter samples, this is done based on their values in place of the time they have been sampled. It seems more logical to rely on the sample timestamps even if this has no implication because when a sample is updated using another sample because it has the same value, they have both the same timestamps! This patch modifies two statements which compare two consecutive filter samples based on their values (smp[]->v) by statements which compare them based on the virtual time they have been sampled (smp[]->t). This fully complies which the code used by the Linux kernel in lib/win_minmax.c. Alo take the opportunity of this patch to shorten some statements using <smp> local variable value to update smp[2] sample in place of initializing its two members with the <smp> member values. This patch SHOULD be easily backported to 3.1 where BBR was first implemented.
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.