[libvirt-users] Kernel unresponsive after booting 700+ vm's on a single host

[Alfred Bratterud]

For a research project we are trying to boot a very large amount of tiny, custom built VM's on KVM/ubuntu. The maximum VM-count achieved was 1000, but with substantial slowness, and eventually kernel failure, while the cpu/memory loads were nowhere near limits. Where is the likely bottleneck? Any solutions, workarounds, hacks or dirty tricks?

A few more details here (tumbleweed question), and the possibility of an upvote:
http://stackoverflow.com/questions/12243129/kvm-qemu-maximum-vm-count-limit

Any tips would be much appreciated!

Best regards,

Alfred Bratterud
Assistant Professor
Dept. of Computer Science,
Oslo and Akershus University College
of Applied Sciences
P:  (+47) 2245 3263
M: (+47) 4102 0222

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