How many LINUX under VM ?

[Reiche, Ricardo]

Friends,
we have 10 Risc boxes running AIX 433.
We are also VM users.
Would anyone mind to share the experience
of running LINUX under VM ?
The question is:
how many LINUX/vm-machines running under which system/box/processor ?
example: 5 Suse under z/VM 3.1 on a z900. 
TIA
Ricardo