From: <glassfish_at_javadesktop.org>
Date: Wed, 07 Jan 2009 13:39:29 PST

The latest tips on this I seen say to set the GC threads equal to your number of cores. ie: 8 for you.

This is from yr2006, http://blogs.sun.com/suveen/entry/sun_java_system_application_server, but have been told it is still valid info.
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