How odd. The Kernel is the first thing I upgraded, here's the output of "uname -r": 3.10.9 I searched for IFF_MULTI_QUEUE in /usr/include/linux/if_tun.h and indeed it wasn't there. I believe Kernel 3.10 should support the Multi Queue, do I need to recompile it? maybe change its config file? -----Original Message----- From: Michal Privoznik [mailto:mprivozn@xxxxxxxxxx] Sent: Thursday, August 29, 2013 9:28 AM To: Naor Shlomo Cc: libvir-list@xxxxxxxxxx Subject: Re: Libvirt multi queue support On 29.08.2013 08:07, Naor Shlomo wrote: > Hi Michal > > First of all thanks for your reply. > > I followed your advice and the guideline you sent and did the following: > > <interface type='bridge'> > <mac address='52:54:00:43:6e:3f'/> > <source bridge='clients'/> > <model type='virtio'/> > <driver name='vhost' queues='5'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> > </interface> > > virsh version reports the following: > > Compiled against library: libvirt 1.1.1 Using library: libvirt 1.1.1 > Using API: QEMU 1.1.1 Running hypervisor: QEMU 1.5.2 > > When I tried starting the machine I received the following: > > error: Failed to start domain NaorDev > error: unsupported configuration: Multiqueue devices are not supported > on this system > > Could you please tell what am I missing? > > Thanks, > Naor Your kernel does not support MQ yet. You need to update the kernel. The support can be checked by executing: grep IFF_MULTI_QUEUE /usr/include/linux/if_tun.h (so maybe you'll need to update the linux-headers package as well). Anyway, the MQ support has been introduced to kernel in the 3.8 release (even though the docs were introduced in 3.9). Michal -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list