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I’m developing a Java application which sometimes do some heavy work.
When this is the case, it use more ram than usually, so the allocated memory space of the app is increased.
My question is why the allocated space is not reduced once the work is finished ?
Using a profiler, I can see that for example 70mb is assigned, but only 5mb are used !
It looks like the allocated space can only grow, and not shrink.
Thanks
The JVM decides when to release the memory back to the operating system. In my experience with Windows XP, this almost never happens. Occasionally I’ve seem memory released back when the Command Prompt (or Swing window) is minimized. I believe that the JVM on Linux is better at returning memory.