> -----Original Message----- > From: kvm-owner@xxxxxxxxxxxxxxx [mailto:kvm-owner@xxxxxxxxxxxxxxx] On > Behalf Of benoit ROUSSELLE > Sent: Donnerstag, 13. Oktober 2011 11:06 > To: kvm@xxxxxxxxxxxxxxx > Subject: Re: virtio localdisk performance > > Hello, > > Can someone running with virtio tell me if this is normal to have such a > difference with dd between host and guest machine ? > host dd is 500MB/s > guest dd is 150MB/s Hi, I just run the same test on a Proxmox VE 2.0 beta (KVM 0.15) as host and also as guest: (hardware: Adaptec 5805 Z with 4 x WD 500 GB RE3 in raid10) Host 155 Guest 120 (raw file on ext3) Do you run with the virtual disk with cache=no? Martin -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html