> From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] 
> Subject: Re: [OT] Followup on 32-bit versus 64-bit performance discussion(s)

> I'm sorry, I probably missed something, but why should 64 bit app on
> 64 bit os on 64 bit cpu be slower as 32 bit analog?

Because all the data items are bigger, or have unused slack space associated 
with them, in a 64-bit JVM.  Consequently, the number of actually useful bits 
transferred between the CPU scheduler, the operand caches, and main memory is 
less per cycle.

 - Chuck


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