On Wed, Oct 10, 2012 at 2:50 PM, Alexander Graf <agraf@xxxxxxx> wrote: > > > On 10.10.2012, at 20:39, 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 > > 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). > > > Why is this expected? This performance drop is quite terrifying. > I think he means expected as in, we already know we have this terrifying problem. I'm looking into this right now, and I believe Marc is also on this. -Christoffer _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
