Well, Thanks. This does not seem to effect my performance on the Guest, Maybe future version will be support Turbo Boost. At 2018-05-18 15:52:01, "Daniel P. Berrangé" <berrange@xxxxxxxxxx> wrote: >On Fri, May 18, 2018 at 10:08:38AM +0800, Allence wrote: >> My resource: >> kernel: 4.16.8 >> host system: Ubuntu 16.04 >> Llbvirt : 4.2 >> Qemu : 2.12 >> Cpu : intel@core i7 6700 >> guest system: windows7 professional >> >> >> My problem: >> In my host, Cpu frequency is 3800~3900 MHz(4 socket and 2 thread) >> because i turn on “Intel Turbo Boost”. And silent frequency is 3.40 GHz. >> Then i boot my guest, But in Guest my cpu frequency is 3408 MHz. why it's >> not 3800 MHz? > >The host OS is in charge of CPU frequency scaling operation. The guest does >not see this ability, so has to be given a fixed CPU frequency. None the >less the guest CPUs will have their frequency changed dynamically by the >host OS as loading requires. The guest simply cannot see when these changes >happen. > >Regards, >Daniel >-- >|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| >|: https://libvirt.org -o- https://fstop138.berrange.com :| >|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
