2010/2/18 compdoc <compdoc at hotrodpc.com>: > I would also just use the e1000 emulation. Theres nothing > better about the virtio devices... ...other than lower CPU utilization and higher throughout? Since these are CentOS/RHEL guests, I wouldn't even consider using e1000, I would just go for virtio_net. I don't have any links, but some time ago there were some benchmarks (on the KVM development list?), showing the e1000 maxing out at around 300-400mbit/s while the virtio got around 900mbit/s. Even with the much higher throughput, the virtio_net driver still had the same or lower CPU utilization. Do your own testing if in doubt. Best Regards Kenni Lund