Hi Peter, Thanks for the advise. How does the intel driver perform? Wirespeed range? (Or, did you make the change more to fix the freezing rather than to up the performance?) Thanks JR On 5/15/2014 1:27 PM, Peter Kieser wrote: > > 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 > -- Your electronic communications are being monitored; strong encryption is an answer. My public key <http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4F08C504BD634953> -- 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
