Messages in this thread | | | Date | Sun, 07 Jun 2009 09:10:13 +0300 | From | Avi Kivity <> | Subject | Re: [RFC] CPU hard limits |
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Chris Friesen wrote: > Avi Kivity wrote: > > >> I am selling virtual private servers. A 10% cpu share costs $x/month, >> and I guarantee you'll get that 10%, or your money back. On the other >> hand, I want to limit cpu usage to that 10% (maybe a little more) so >> people don't buy 10% shares and use 100% on my underutilized servers. >> If they want 100%, let them pay for 100%. >> > > What about taking a page from the networking folks and specifying cpu > like a networking SLA? > > Something like "group A is guaranteed X percent (or share) of the cpu, > but it is allowed to burst up to Y percent for Z milliseconds" > > If a rule of this form was the first-class citizen, it would provide > both guarantees, limits, and flexible behaviour. >
I think you're introducing a new control (guarantees, limits, burst limit), but I like it.
-- Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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