Saturday, December 12, 2009

not every new object is allocated in Eden

Contrary to popular belief, some large objects might be allocated from oldgen (as of 2012).

This is at the discretion of the garbage collector. Note every JVM garbage collector controls allocation as its 2nd job (cleanup is first job). There's no guarantee by the JVM vendor exactly when a large object may be allocated from eden or oldgen.

Therefore, it's only safe to say that "most allocations hit eden".

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