CPU usage increases with change in timezone from CST to PST on server

Solution In Progress - Updated -

Issue

  • we have set the property "-Duser.timezone" on the JVM and conducted a performance test. The test revealed 1.5-2 times increase in the CPU utilization.
    Could you please explain the impact of using this property? Will there be a performance affect as revealed by our tests? How does the property internally calculate the time zone while setting it to PST?

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP)
    • 6.4.4

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