2010/11/19 Nick oinksocket@letterboxes.org:
Thanks for the quick reply.
On 18/11/10 23:45, Kenni Lund wrote:
The good thing about KVM compared to other virtualization solutions, is that KVM doesn't try to reinvent the wheel. It leaves scheduling to the Linux kernel, so whatever your Linux system is setup to use, KVM will use that. You can choose to run CFS (Completely Fair Scheduler), deadline, BFS, or whatever scheduler you prefer. As long as Linux uses it, KVM will use it.
Is this process scheduling we're talking about here?
Yep, a virtual CPU is just a process on the host Linux system.
So, this sounds feasible... except if virtual CPUs must have time shared equally as the VMWare co-scheduling explanations imply. A scheduler for threads / processes presumably wouldn't guarantee such a thing?
I think cgroups is the solution, if you want to guarantee resources to some guests. I haven't tested it with KVM, but perhaps "nice" and "ionice" can be useful as well...the guests are just Linux processes after all.
Maybe I'll go and investigate the KVM list....
:)
Best regards Kenni