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Change-Id: I7f004ff1404281a825f6317d1555bbb32822a971
We can reduce a workload of rabbitmq through implementation
of expiration mechanism for idle connections in the pool with
next properties:
conn_pool_ttl (default 20 min)
conn_pool_min_size: the pool size limit for expire() (default 2)
The problem is timeless idle connections in the pool, which can be created
via some single huge workload of RPCServer. One SEND connection is heartbeat
thread + some network activity every n second. So, we can reduce it.
Here is two ways to implement an expiration:
[1] Create a separated thread for checking expire date of connections
[2] Make call expire() on pool.get() or pool.put()
The [1] has some threading overhead, but probably insignificant
because the thread can sleep 99% time and wake up every 20 mins (by default).
Anyway current implementation is [2].
Change-Id: Ie8781d10549a044656824ceb78b2fe2e4f7f8b43
Hanxi Liu
OpenStack Release Bot