[ILUG] Xen: Dividing RAM between dom0 and domU's[Scanned]
cormac.mcclean at gmail.com
Wed Nov 1 10:36:01 GMT 2006
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.
Lecturer, Athlone IT Software Engineering
Free/Open Source Software Enthusiast
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