On Wed, Feb 19, 2014 at 06:42:56PM -0300, Alejandro Comisario wrote: > Hi everyone. > We are having a private cloud with more than 1000 phy servers. > Each server has 128GB of RAM and 24 cores (2 heaxacores with HT > enabled), but the amount of vms running on those servers versus the > flavor (amount of CPU) made us use about 80 VCPUS. > > The questions are as follow. > > * is there a fine documentation of HOW kvm handles cpu allocation/pin > per vm in an scenario like this one ? > * is there also, a documentation that explains under a circumstance > where a VM needs more processing power, how priority is managed ? > * is there a way to define some kind of politics or rules to have > specific cpu pinning for specific vms ? Hi Alejandro, Check "Chapter 7. Overcommitting with KVM" of https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Administration_Guide/chap-Virtualization-Tips_and_tricks-Overcommitting_with_KVM.html -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
