IBM User Guide for Java V7 on Windows > IBM SDK for Java > The collector and the allocator > Generational Concurrent Garbage Collector



Tenure age

Tenure age is a measure of the object age at which it should be promoted to the tenure area. This age is dynamically adjusted by the JVM and reaches a maximum value of 14. An object’s age is incremented on each scavenge. A tenure age of x means that an object is promoted to the tenure area after it has survived x flips between survivor and allocate space. The threshold is adaptive and adjusts the tenure age based on the percentage of space used in the new area.


Parent: Generational Concurrent Garbage Collector








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