users@glassfish.java.net

Re: glassfish server and linux 32 bit vs 64 bit

From: Filipe Sousa <filipe_at_ipb.pt>
Date: Fri, 01 Aug 2008 16:04:22 +0100

Alexis Moussine-Pouchkine wrote:
>
> On Aug 1, 2008, at 8:04, glassfish_at_javadesktop.org wrote:
>
>
> Usually the more recent the linux kernel and the the JVM, the higher you
> can go.
> On theory 2^32=4GB is the max but that's only theory.
> In practice it's often still 2^31=2GB as one bit is used for something
> else.
> In both cases (31 or 32), you need to leave room for non-java memory and
> can reach somewhere close to 1900MB or 3900MB.
> Of course with 64-bit JVMs, no such issue, I don't think we build
> machine that have 2^64 memory.

It's possible to enable PAE in the linux kernel to have more than 4GB
(max 64GB)

-- 
Filipe Sousa