[jboss-jira] [JBoss JIRA] (JBRULES-3663) Use a common thread pool for all TimerJobInstances
Sebastian Calbaza created JBRULES-3663:
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Summary: Use a common thread pool for all TimerJobInstances
Key: JBRULES-3663
URL: https://issues.jboss.org/browse/JBRULES-3663
Project: Drools
Issue Type: Enhancement
Security Level: Public (Everyone can see)
Reporter: Sebastian Calbaza
Assignee: Mark Proctor
From what I've seen(correct me if I'm wrong) there is, for
each StatefulKnowledgeSession a TimeManager -> JDKTimerService instances pair that use
a ScheduledThreadPoolExecutor of size one(default) for scheduling timer job instances.
Now the issues that I see are:
* not optimal resource utilization in case of large number of sessions
* number of sessions bounded by available memory for threads
* some performance penalty for concurrent jobs (I say some because all session ops are
serial)
I provided also a PR with to be reviewed
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