virtualized guest use only 2 cores

[Gilboa Davara]

On Fri, Oct 18, 2013 at 1:45 PM, Frantisek Hanzlik <franta at hanzlici.cz> wrote:
>
> Not sure if it is Fedora/KVM problem, but:
> I'm trying virtualize MS Win7 Pro 64 guest under Fedora 19 x86_64 host.
> In virt-manager I allocated 4 cores (host machine has Xeon E3-1230 CPU
> with 8 cores incl. hyperthreading) to guest. But after installation
> guest OS uses only two cores - as report its task manager and OS
> properties info page. But what is weird, its device manager report all
> cores (see attached picture - where I increased no. of cores to 6,
> again without increased number of used cores). Guest OS should support
> up to 4 cores, according to manufacturer:
> http://technet.microsoft.com/cs-CZ/library/cc794868.aspx
>
> But from this referenced URL it seems as they are considering hyper-v
> as virt. supervisor - maybe then this result be some KVM problem or
> nature?
>
> TIA, Franta Hanzlik
>
>

Please post the output of:
$ for PID in $(pgrep qemu-system) ; do echo $PID ; cat
/proc/$PID/cmdline ; echo ; done

- Gilboa