Has anyone tried Xen virtual machine?
I tried the Xen hypervisor 3.0.2 (comes with kernel 2.6.16) on RHEL4 u3. Do build from source, and edit the Makefile to create the xen0 and xenU targets instead of the xen target only.
I hv 1.5 GHz celeron M and 256 MB ram. Can anyone please tell what would be the performance on this machine?
Performance could be depressed. Xen and most other (para-)virtualization environments are processor intensive. I tried on a Dell PowerEdge server with 128 Megs only memory and a single CPU of 2.8 Ghz. The performance as acceptable. I created a single RHEL4 u3 guest domain with 512 Megs memory (obviously virtualized). It ran reasonably well but don't expect very high performance on the box you mention. Keep around 1 Gig of swap space.
How much disk space is repuired?
Depends on what OS you would like to run in your guest domains. Xen itself does not take a lot of disk-space ... hardly 50 megs I would assume. 1) But if you are running a guest OS, you might either want to make a separate partition where you install the OS (without a bootloader) and then boot it with Xen. 2) Or you could create a disk-dump of an existing OS installation on a similar architectures as your box and store it as a disk file on a local partition. You can mount this as a loopback file system to verify its contents. And of course you can use Xen to boot it. Either way, I guess you would have to give yourself around 5 Gigs of space (either make the partition or store the image file allowing for sufficient space). Cheers, Arindam ______________________________________________________________________
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