On Tue, Mar 1, 2011 at 10:23 AM, Kevin Clark <kevin.clark@xxxxxxxxxxx> wrote: > Any thoughts/ideas? There are a lot of variables here. Are you using virtio-blk devices and Windows guest drivers? Are you using hardware RAID5 on the NFS server? Could it be a network issue (contention during benchmark runs)? I'd start by benchmarking NFS on the host without running a virtual machine. Make sure you're getting acceptable performance and repeatable results there first. Stefan -- 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