On 2014-05-14 8:37 AM, JR wrote:
Greetings all, Though I don't believe that this is KVM problem per se, I'm seeing very poor network performance when using windows 2008R2 KVM instances with the virtio driver when on a 10G network. iperf results show linux VMs getting close to wire speeds, while windows only does about 1.3Gb/sec. I've tried a number of tcp settings (chimney, etc...) as recommended by some google searches but nothing has helped. Does anyone have any advice? Thanks much, JR
I ran into similar issues with the Redhat virtio drivers, and the guest would freeze with high transfer. I switched to the emulated e1000 NIC and haven't had any problems since.
-Peter
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