Will Reichert created JBTM-2105:
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Summary: TxStats.enable generates excessive GC overhead
Key: JBTM-2105
URL:
https://issues.jboss.org/browse/JBTM-2105
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: Transaction Core
Affects Versions: 5.0.1.Final, 4.17.15
Reporter: Will Reichert
Assignee: Tom Jenkinson
Fix For: 4.17.18, 4.17.15
TxStats.enable() calls arjPropertyManager.getCoordinatorEnvironmentBean() with each
invocation which results in String concatenation to generate a HashMap key. The String
concatenation generated 1.61GB of GC overhead during a 20 minute performance test.
Changing TxStats to use a private static reference to the Bean decreases the GC overhead
to 20KB for the same 20 minute test
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