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A sync task used to manage reconnect, sessions creation or shutdown and data synchronization is responsible to refresh reconnect and heartbeat timers for each remote peers and trigger applets wakeup. These timers are used to refresh the sync task timeer itself. Thus it is important to take care to always properly refresh them. However, when there are some data to push, the reconnect timer is not checked. It may be expired and not refreshed. In this case, an expired timer may be used to the sync task, leading to a storm of wakeups. The sync task is woken up in loop because its timer is in the past, waking up Peer applets at each time. To fix the issue, the peer's reconnect timer is now refresh to the default reconnect timeout, if necessary, when there are some data to push. This patch must be backported to all stable versions.
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)