On Tue, Apr 9, 2019 at 5:52 AM Dario Lesca <d.lesca@xxxxxxxxxx> wrote: > > On a i7+16Gb+SSD notebook of a my friend I have install Fedora 29 workstation (all work fine! ... thank to all!) > and into qemu/kvm/libvirtd via virt-manager I have install a win10pro with all virtio driver (disk, network, ecc..). > > After few days my friend say me that the win10 is slow and less efficient than same installation on another PC with VirtualBox. > He told me "virtualbox is better and faster" What backing storage is the VM using? qcow2, raw, LVM? If it's a file, what filesystem is it on? It's worth experimenting with the virtio disk "cache mode" setting, in virt-manager under advanced > performance options. I use unsafe, which is bad advice to give because it really is not safe if there's a crash, good chance the guest filesystem is toast. But it's a lot faster. And I consider my VM's throwaway. There may be another cache setting that's not so dangerous but also doesn't penalize like the default. I think what you want is cache=writeback if it's a file, and cache=none if it's LVM. I would say test both and pick the one with better performance. https://doc.opensuse.org/documentation/leap/virtualization/html/book.virt/cha.cachemodes.html#cachemodes.descr Note that some of the cache modes must be paired with a specific IO mode, e.g. unsafe only works with threads. -- Chris Murphy _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
