Re: [Xen-users] Xen, Memory and prelink interaction

[John Madden <jmadden@xxxxxxxxxxx>]

On Fri, 2008-07-25 at 17:35 +0100, Massimo Mongardini wrote:
> The servers are HP ProLiant BL465c G1
> cpus: 2xDual-Core AMD Opteron(tm) Processor 2216 HE
> os: RHEL 4.6 32bit version (Linux server-0007 2.6.9-67.0.15.ELsmp #1
> SMP 
> Tue Apr 22 13:50:33 EDT 2008 i686 athlon i386 GNU/Linux)
> ram: 8GB
> 
> I have several java apps that start with -Xmx2048m option and they
> work 
> just fine on 12 blades, but on some of them that were used as dom0s.

Really?  With a 32-bit JVM?  I've never been able to get it to start
with any more than the ~1530MB limit and I found docs on Sun's site to
back that up -- different OS's place different limits under 2048MB for
various overheads.  I'd say you should count yourself very, very lucky
that the 2048MB's never ran into OOM conditions.  Still, odd that the
JVM won't even *start* under Xen...

John



-- 
John Madden
Sr. UNIX Systems Engineer
Ivy Tech Community College of Indiana
jmadden@xxxxxxxxxxx


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