how fast will be java.lang.instrument.Instrumentation.getObjectSize()?

Trying to make a decent sizeof() implementation, I end up, fully optimized, with a 0.3 ms for a 12k object tree with ~200 disctinct object, 16 class types, on a p3, 800mhz.

This is awfully long.

We want to limit our data queues by real size, not object count.

I was wondering how fast can we expect the Instrumentation.getObjectSize() method be?

http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/Instrumentation.html#getObjectSize(java.lang.Object)

Thanks.

[518 byte] By [desd1012] at [2007-9-30 11:04:31]