[ILUG] Xen: Dividing RAM between dom0 and domU's[Scanned]

[Cormac McClean]

Hi,

Thanks to all who emails with assitance regarding setting up Xen on the 
DELL PowerEdge 2850. I got it working with Debian Etch/Sid and the 
packages xen-linux-system-2.6.18-1-xen-686 and xen-hypervisor-3.0.3-1-i386.

I have one further question relating to the allocation of RAM to the 
domU's. I have 3.5 GBs of RAM (potentially 4GB but I don't want to risk 
messing up a working setup to recompile the kernel for the extra 0.5GB) 
and I have 20 domUs (possibly asking for trouble, but I want each 
student to have his/her own virtual server). I have allocated 128MB to 
each of the domU's, leaving 1109MB for dom0 (of which currently 261 is 
used and 847 free with the 20 domU's running). Should I allocate more to 
dom0? I could reduce the RAM for the domU's to 64MB each, which would 
effectively double the RAM for dom0, but is this a waste? How important 
is RAM to dom0?

Any advice on this would be appreciated.

Regards,
Cormac.

-- 
Cormac McClean.
Lecturer, Athlone IT Software Engineering
Free/Open Source Software Enthusiast

Please avoid sending me Microsoft Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html


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