I was pretty convinced this was going to be something about thread local area and jvm's, and totally confused by the microsoft domain. I was wrong. In case you

I was pretty convinced this was going to be something about thread local area and jvm's, and totally confused by the microsoft domain. I was wrong. In case you were hoping for info about TLA under jrockit, here's a starter read on that: http://docs.oracle.com/cd/E13150_01/jrockit_jvm/jrockit/geninfo/diagnos/memman.html#wp1089034 http://docs.oracle.com/cd/E13150_01/jrockit_jvm/jrockit/geni... This appears not the same as ThreadLocal classes of objects in Java. It has more to do with heap allocations for improving performance of object allocation. I think more like a segment of heap allocated per thread for quick object allocations, so that there is no need to coordinate a free block from the larger heap (likely to be slower).