Re: [libvirt-users] VM Performance using KVM Vs. VMware ESXi

Thanks Dominique & Daniel. Looks like i need to upgrade my VMs kernel to make it aware of virtio.

Found this information from this link: http://wiki.libvirt.org/page/Virtio#Disk_.28block.29_device_driver I tried without upgrading the Kernel and as soon as i start my VM it got into Kernel Panic. I will try using virtio after upgrading my VMs kernel. Thanks for all the responses and pointers. Thanks Jatin On 4/14/2015 5:08 PM, Dominique Ramaekers wrote: > Please read: https://libvirt.org/formatdomain.html > > > -----Oorspronkelijk bericht----- > Van: Jatin Davey [mailto:jashokda@cisco.com] > Verzonden: dinsdag 14 april 2015 13:39 > Aan: Daniel P. Berrange > CC: Dominique Ramaekers; libvirt-users(a)redhat.com > Onderwerp: Re: [libvirt-users] VM Performance using KVM Vs. VMware ESXi > > On 4/14/2015 4:58 PM, Daniel P. Berrange wrote: >> On Tue, Apr 14, 2015 at 04:53:52PM +0530, Jatin Davey wrote: >>> On 4/14/2015 4:42 PM, Dominique Ramaekers wrote: >>>> About Spice: I think it’s good practice to use spice because it >>>> improves the performance of the VM in general by improving screen >>>> performance. If your VM is constantly displaying output, you’ll >>>> probably will notice a difference. >>>> >>> [Jatin] Ok, This is not my concern as of now. I will take a look at >>> it sometime later. >>>> About virtio: You can see it in the settings. Better yet, it’s in >>>> your XML. If you post your XML, we can take a look… >>>> >>> Here is the xml associated with my VM: >>> >>> ******************************** >>> <domain type='kvm'> >>> <devices> >>> <emulator>/usr/libexec/qemu-kvm</emulator> >>> <disk type='file' device='disk'> >>> <driver name='qemu' type='qcow2' cache='none'/> >>> <source file='/var/lib/libvirt/images/****.qcow2'/> >>> <target dev='hda' bus='ide'/> >>> <address type='drive' controller='0' bus='0' target='0' unit='0'/> >>> </disk> >> This disk is configured to use IDE, so performance of anything that >> does disk I/O is going to be terrible. You really want to be using virtio. >> >>> <interface type='bridge'> >>> <mac address='52:54:00:c9:58:c9'/> >>> <source bridge='br332'/> >>> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> >>> </interface> >> This doesn't have any model listed at all, so it will be falling back >> to a generic emulated NIC. Again performance of this is likely going >> to be terrible for anything doing network I/O. You want to be using >> virtio for this too. >> >> Regards, >> Daniel > How do i make use of virtio for the both disk and network that you have mentioned above ? > Any pointers to it would be helpful. > > Thanks > Jatin _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users