how to tweak kernel to get the best out of kvm?

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Hi folks,

Problem: My kvm server (8 cores, 64 GByte RAM, amd64) can eat up
all block device or file system performance, so that the kvm clients
become almost unresponsive. This is _very_ bad. I would like to make
sure that the kvm clients do not affect each other, and that all
(including the server itself) get a fair part of computing power and
memory space.

What config options would you suggest to build and run a Linux
kernel optimized for running kvm clients?

Sorry for asking, but AFAICS some general guidelines for kvm are
missing here. Of course I saw a lot of options in Documentation/\
kernel-parameters.txt, but unfortunately I am not a kernel hacker.

Any helpful comment would be highly appreciated.


Regards

Harri
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