On Thu, 30 Jun 2011 11:13:18 +0800, Wen Congyang <wency@xxxxxxxxxxxxxx> wrote: > We want to control bandwidth for each vcpu, so we can not use the > API virDomainSetSchedulerParameters(). Introduce two new APIs to > change and query bandwidth for each vcpu. > Will we have different cpu bandwidth for different vcpus? Something like this: vcpu1: 1000000/250000 vcpu2: 1000000/500000 vcpu3: 1000000/300000 vcpu4: 1000000/400000 IMO, that is not required, we can have a top level bandwitdh for the VM and then redistribute it among vcpus equally, without user knowing about it. Something like this: VM1(4vcpu) has to be throttled at 1CPU bandwidth using SetSchedParamters. Internally libvirt splits it equally: vcpu1: 1000000/250000 vcpu2: 1000000/250000 vcpu3: 1000000/250000 vcpu4: 1000000/250000 So why introduce VCPU level apis? Regards, Nikunj -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list