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JVM Max heap size

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linux-howto

http://serverfault.com – For an application I use JVM Max heap setting when starting it on both a test environment and a production system. When i connect via JMX to monitor the application I see that the max heap size of production app is not the same as test application. I use -Xmx2000m on both and on test environment I get 1,864,171,520 B and on production I get 2,009,726,976 B. So my questions are -Is this info reliable. The Java versions and the machines are identical (Mac OS X 10.5). -If this info is reliable then what could be causing this and how can it be changed so both systems behave the same for max hea (HowTos)