Re: [libvirt] [PATCH 06/10] vcpubandwidth: introduce two new libvirt APIs

>>>>>> So why introduce VCPU level apis? >>>>> >>>>> Adam Litke said IBM's performance team nead to control cpu bandwidth for each >>>>> vcpu. >>>> Right, but we do not export that as a User API, that was my suggestion. >>>> We can internally control each vcpu's bandwidth, i.e. divide equally. >>> >>> Hmm, I heard that some server could run CPUs at different speed. >>> May be this patch can simulate this behavior. >> That happens on my laptop as well, depending on the machine load CPU >> frequency is changed but it is done transparently. > > I means explicitly CPU speed configuring. ;) > >> >> I am not sure if we are trying to simulate that here. > > So why not leave the flexible interface here, and let users make > the decision? In my mind, the flexibility is not always a good thing. It is nothing but troublesome for the person who doesn't like detailed setting. I don't know how many people want this flexibility. I'm for Nikunj's desgin. Do you have any concerns?

-- Best regards, Taku Izumi <izumi.taku(a)jp.fujitsu.com&gt;