Re: 32 bit vs 64 bit Java -- JAVA400-L

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Subject: Re: 32 bit vs 64 bit Java
From: Thorbjoern Ravn Andersen <ravn@xxxxxxxxxx>
Date: Tue, 09 Feb 2010 19:08:27 +0100
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Steve Hinrichs skrev:

Has anyone done any benchmarking, or has any experience or recommendations on what is best to use? We currently support the Classic JDK 5.0 and the J2SE 5.0 32 bit. I am wondering if there is an advantage to the 64 bit
versions.

The advantage is providing for large heaps. As I understand it there is no other difference. Unfortunately this comes at a price as all references go from 32-bit to 64-bit, so solely by switching the heap grows by 30% or so.

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