<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Thu, Nov 24, 2016 at 9:24 AM, <a href="mailto:qinglong.dong@horebdata.cn">qinglong.dong@horebdata.cn</a> <span dir="ltr"><<a href="mailto:qinglong.dong@horebdata.cn" target="_blank">qinglong.dong@horebdata.cn</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>
<div><span></span><span style="font-family:微软雅黑,tahoma">Hi, all:</span></div>
<div> <span style="font-size:10.5pt;line-height:1.5;background-color:window"> </span><span style="font-size:10.5pt;line-height:1.5;background-color:window">I have an ovirt 4.0.5 </span><span style="font-size:10.5pt;line-height:1.5;background-color:window">environment. There is a 10g nic in the host. I have created a vm which uses the 10g nic. The type of the nic is virtio. Then I got a 1g virtual nic in the vm. Now I want a 10g virtual nic in the vm. Is it possible? Anyone can help? Thanks!</span></div><div><br></div></div>
<br></blockquote></div><br></div><div class="gmail_extra">Did you make any performance test to evaluate real performance?</div><div class="gmail_extra">What is the qemu-kvm command line generated by your oVirt?</div><div class="gmail_extra"><br></div><div class="gmail_extra">I see in my 4.0.5 environment with 1Gb/snic/vnic, it is something like this:</div><div class="gmail_extra"><br></div><div class="gmail_extra"> -netdev tap,fd=24,id=hostnet0,vhost=on,vhostfd=28 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:1a:4a:16:01:58,bus=pci.0,addr=0x3<br></div><div class="gmail_extra"><br></div><div class="gmail_extra">According to this link below, this syntax should give you 10Gb/s performance.... I don't have a 10Gb/s to verify though at my side... ;-)</div><div class="gmail_extra"><br></div><div class="gmail_extra"><a href="http://www.linux-kvm.org/page/10G_NIC_performance:_VFIO_vs_virtio">http://www.linux-kvm.org/page/10G_NIC_performance:_VFIO_vs_virtio</a><br></div><div class="gmail_extra"><br></div><div class="gmail_extra">Gianluca</div></div>