On Wed, Oct 10, 2012 at 2:39 PM, Alexander Spyridakis <a.spyridakis@xxxxxxxxxxxxxxxxxxxxxx> wrote: > For your information, with the latest developments related to VirtIO, I run > netperf a couple of times to see the exact standing of network performance > on the guests. > > The test was to run netperf -H "ip of LAN node", which tests TCP traffic for > 10 seconds. > > x86 - x86: ~96 Mbps - reference between two different computers > ARM Host - x86: ~80 Mbps > ARM Guest - x86: ~ 2 Mbps - emulation > ARM Guest - x86: ~74 Mbps - VirtIO does anyone know recent numbers for x86-based kvm using virtio? > > From these we conclude that: > > As expected x86 to x86 communication can reach the limit of the 100 Mbps > LAN. > The ARM board seems to not be capable of the LAN. > Network emulation in QEMU is more than just slow (expected). > VirtIO has a far greater performance gain than what was initially stated. > > Notes: > > Running netperf from the x86 machine to guest/host, gave slightly higher > numbers but resulted in around the same performance ratio. > Similar results were obtained from an nfs and initrd (whole guest in RAM) > guest boot method. > > Regards. > > _______________________________________________ > kvmarm mailing list > kvmarm@xxxxxxxxxxxxxxxxxxxxx > https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
