neutron/releasenotes/notes/keepalived-state-change-ser...

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---
upgrade:
- A new option ``ha_keepalived_state_change_server_threads`` has been
added to configure the number of concurrent threads spawned for
keepalived server connection requests. Higher values increase the
CPU load on the agent nodes. The default value is half of the number
of CPUs present on the node. This allows operators to tune the
number of threads to suit their environment. With more threads,
simultaneous requests for multiple HA routers state change can be
handled faster.