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xen-users
Re: [Xen-users] cpu management
Paul Peeler wrote:
On Fri, 2006-04-07 at 15:26 +0200, Andrej Radonic wrote:
Paul Peeler wrote:
Is there a way to define how much of the cpu a particular domU is
allowed to use? I know you can specify which cpu/cpus it uses, but it
would be nice to be able to say "25% of CPU0" and allow it to use more
if it is available.
Hi Paul,
yes (of course), something like that.
There is the "memory" parameter in the domU's config file. This is the
default as well as max RAM assigned to a domU at boot time. At runtime
you can use "xm mem-set <domain> <megabytes>" to dynmically adjust
allocated RAM, but only up to the initial value.
All this is accomplished via the "balloon" driver.
Cheers,
Andrej
How does that control the cpu utilization?
Hi Paul,
sorry - completely misread your posting. I thought you were referring to
memory, not CPU.
AFAIK to this end there is the "bvt" scheduler. You will find info on
this in the xm man page. Never used it so I am sorry I can't tell you
anything more. (but I'd be happy to hear from you about it if you
succeed because I will get to this topic in a few days).
Bye,
Andrej
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