Hi again,
I've done some tests with MDB and ActiveMQ.
I identified a bottleneck on ActiveMQ. The class is
org.apache.activemq.management.CountStatisticImpl
As you can see, this class is used for JMX statistics. But, even if management
system property is not set, this class is used.
Some methods of this class call "updateSampleTime();"
Here is the definition of this method:
protected synchronized void updateSampleTime() {
lastSampleTime = System.currentTimeMillis();
}
First it's synchonized and then it does a native (system) call which is very
bad for performances (system CPU usage).
I've checked trunk (5.x) version and it seems to be patched.
So what can we do ?
--> go to 5.x version ?
--> add a patch to the current 4.1.1 version ?
Kind regards,
Jean-Louis MONTEIRO
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