From: Steve B. <Ste...@an...> - 2003-01-31 13:34:23
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Sunil V. Soman wrote: > Hi, are the EXTENT constants (LOS_SIZE, etc.) in the various plans the > maximum amount of memory that a plan can address ? > > Why is it that the verbose:gc dump shows the same sizes for the various > heaps for a plan (as given by the EXTENT constants), regardless of > whatever > I pass in with the -X:h option? > > It is not clear how the -X:h flag is really used in jikesrvm > 2.2.0. It used to be pretty straight-forward in version 2.1.1 (watson > collectors). I think you are confused. -X:h sets the heap size, as expected, and as reflected in the output produced when the verbosity options are used. I imagine you are looking at the *VIRTUAL MEMORY* set aside for various spaces (meta-data, generations, etc). This is statically defined. The things you ask about are described as "Memory layout constants" in comments immediately above their declaration. Please read the code carefully. --Steve |