[PERF] gmbal objects consuming large part of heap

[glassfishrobot]

The gmbal API call in ORB

mom = ManagedObjectManagerFactory.createFederated(MONITORING_SERVER);

is causing a large number of gmbal instances to be created and is affecting GlassFish performance. See http://java.net/jira/browse/GLASSFISH-17044.
Attached is the call stack.

This fix should be to defer the gmbal API calls until there is a JMX client connection.

From Naman: JMX service would start on 8686 (on DAS). So you can check localhost:8686 for the same. From quicklook workspace you can find the sample for the same.

In GlassFish monitoring (StatsProviderManagerDelegateImpl), we defer the gmbal API calls by extending MBeanListener.CallbackImpl and overriding mbeanRegistered method. This method is called when AMX DomainRoot is loaded (when there is a JMX, for example). AMX DomainRoot needs to be ready before any other mbeans can be registered.

Fix should be targeted for GlassFish 3.1.2.

[glassfishrobot]

@glassfishrobot Commented
Reported by jc129909

[glassfishrobot]

@glassfishrobot Commented
File: orbstack.rtf
Attached By: jc129909

[glassfishrobot]

@glassfishrobot Commented
Issue-Links:
depends on
GLASSFISH-18131
blocks
GLASSFISH-17044

[glassfishrobot]

@glassfishrobot Commented
Was assigned to hvilekar

[glassfishrobot]

@glassfishrobot Commented
hvilekar said:
Tried deferring GMBAL API calls by implementing the class that extends MBeanListener.CallbackImpl - and overrides mbeanRegistered() callback. The callback was invoked when JMX client connected. However, this approach caused issues with ORB initialization.

ORB initialization is done in three steps:
1. partial ORB initialization
2. mom = ManagedObjectManagerFactory.createFederated(MONITORING_SERVER);
3. rest of ORB initialzation - that need mom initialized.

Since #2 required #3 - moving #2 from ORB initialization to mbeanRegistered() callback does not work.

[glassfishrobot]

@glassfishrobot Commented
This issue was imported from java.net JIRA GLASSFISH_CORBA-5

[glassfishrobot]

• Issue Imported From: [PERF] gmbal objects consuming large part of heap javaee/glassfish-corba#5
• Original Issue Raised By:@glassfishrobot
• Original Issue Assigned To: @russgold