-- 59G->59G(59G), 2.0932801 secs] ^^ this "--" is entirely undocumented as far as i can tell; i believe it indicates that the young collection (or any collection?) was cancelled (i've always seen these in the last-ditch-attempt young-collections before a full-GC). is that correct?
also the various docs recommend 2048 regions but if you MUST have more or less which should you choose and what are reasonable limits? e.g., i have a 59G heap with default 16MB regions (which means there should be 3832 of them); in what cases (if any) would it make sense to use 32MB regions instead? most docs say to size your regions based on max-heap size rather than starting-heap size, which would seem to indicate <2048 regions is better than >2048, since at the start that hypothetical JVM would certainly have fewer than 2048 regions until it grew into its max-heap size. thanks :) .....................ron.
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