Hi, On Fri, Feb 1, 2019 at 5:04 PM Daniel P. Berrangé <[email protected]> wrote:
> On Fri, Feb 01, 2019 at 04:56:23PM +0200, Hetz Ben Hamo wrote: > > Hi, > > > > I hope I'm asking in the right place. > > > > First question: I'm using AMD Ryzen 2700 CPU, and the VM's were running > > super slow. Checking on the net, most of the docs shows that I should > look > > at lscpu output which indeed shows that my CPU has SVM. However, it took > me > > a bit more time to figure out that the kvm_amd module was not loaded > > because SVM was disabled in the BIOS, so my question is: Could the VMM > team > > add a simple check before starting a VM if kvm-intel or kvm_amd modules > are > > loaded and if not - show a warning message to enable VT-X/SVM on the > > BIOS/UEFI please? > > FWIW, virt-host-validate command line tool should report on this problem, > but of course you have to know it exists first, so wouldn't have helped > your situation. > Yes, that's the utility that helped me to diagnose the issue. My idea was thinking about an end-user who doesn't have much experience with Linux, just to notify him with a warning window to go set it in the BIOS. Just an idea ;) > > > Second question: After enabling the SVM in the BIOS and restarting the > VMM, > > the previously configured VM was still running super-slow. I recreated > the > > VM and only the new VM was running fast, so I assume that a parameter not > > to use the SVM is written in the VM configuration? if so, where can I > > change it in the VM configuration GUI? (I thought it was related to the > > copy/mode of the CPU, which doesn't change things) > > Whether to use TCG (emulation) or KVM (hardware acceleration) is in the > guest XML configuration. > Is it possible to change "TGC" in the virt-manager to "TCG (emulation)"? that could help. > > I don't think its changable in the GUI. > > If you use the command line tool 'virsh edit $GUESTNAME' as root you will > see > > <domain type='qemu'> > .... > > Just change that to 'kvm' instead. > Oh, thanks! > > > 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 :| >
_______________________________________________ virt-tools-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/virt-tools-list
