[jboss-user] [Performance Tuning] - Re: Failover performance

Wolf-Dieter Fink do-not-reply at jboss.com
Mon Jun 27 09:33:03 EDT 2011

Wolf-Dieter Fink [http://community.jboss.org/people/wdfink] created the discussion

"Re: Failover performance"

To view the discussion, visit: http://community.jboss.org/message/612110#612110

The EJB loadbalancing and failover works with a client proxy and a server communication.

The server communicate a shutdown or detect a full stop (e.g. complete hanging or looong full GC).
A crash, e.g. JVM cored, is also detected.
It depends on the situation how long it takes.

Fact is
- all Tx on the chrased server are not commited
- the client proxy might hung for a few millis and try the next server of its list
- the next server provide the new cluster view without the crashed server.

So there is no measurable time for such failover in best case and only a few millis in worst.

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