[rules-users] Starting engine using fireUntilHalt and inserting no facts results in 50% CPU usage

[jschmied]

Hi!

fireUntilHalt uses one processor with 100%. You have a dualcore, so it's
50%. It's by design like this.

You can:
- Call fireAllRules after every insert if you have no ruleflow.

- Use fireAllRules in a loop with a small sleep and check for the end of the
ruleflow in the loop:

while (prc.getState() == ProcessInstance.STATE_ACTIVE) {
	Threads.sleep(20);
	ksession.fireAllRules();
}

with both methods you get a low cpu load.

bye

juergen
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