On Tue, 2020-06-09 at 16:52 -0700, Gordon Messmer wrote: > On 6/9/20 5:10 AM, Stephen Morris wrote: > > I have the following messages in dmesg output, are they indicating a > > cpu issue, or are they just indicating that because linux is running > > in a vm under windows, and hence sharing the cpu cores with windows > > that windows was using core 7 at the time the process checked? > > Yes, probably something like that. Typically, in order to schedule a > virtual machine run time, all of the CPUs that the guest will use must > be free simultaneously. As you allot more CPUs to a virtual machine, > that becomes harder to schedule, and the guest can experience greater > latency between run time. If your host system doesn't have at least 12 > CPU cores, I would recommend against allotting 8 to the guest. Fewer > cores will be easier to schedule, and may perform better.
In KVM/QEMU you can also pin specific cores to your VM to prevent competition between the host and guest (mainly by avoiding cache pollution as I understand it). I do this for Windows gaming under Fedora, but I don't know if that's supported in VB on a Windows host. poc _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org
