[jboss-user] [Performance Tuning] - Maximum XMX value on 32bit Windows Machine

[ntnlljboss]

Goodmorning,
I'have some problems while setting the XMX JM value bigger than 1300m.

When i set 1400 or 1500m the error returned by the run.sh is:
---
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
---

The o.s. is Windows Server 2003 32bit with this memory usage

Total Physical Memory	16,383.08 MB
Available Physical Memory	10.37 GB
Total Virtual Memory	23.41 GB
Available Virtual Memory	13.21 GB

the server has more than 10GB of free physical memory. Searching google i found that the problem maybe is a limit in the address space on the 32bit version of Windows Server 2003. Is really possibile that i can't start JV istance with an XMX value bigger than 1300m?

I have not experience with JBoss at Windows 32, any suggestion appreciated

Thanks in advance
Antonello


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