<div dir="ltr">Hi all,<div><br></div><div>In our Grizzly deployment, we found a distinct performance reduction on networking throughput.</div><div><br></div><div>While using hybrid vif-driver, together with ovs plugin, the throughput is dramatically reduced to<span style="background-color:rgb(255,255,255)"><font color="#ff0000"> 2.34 Gb/s</font>.</span> If we turn it back to common vif-driver, throughput is<font color="#ff0000"> 12.7Gb/s</font>.</div>
<div><br></div><div>A bug is filed on it: <a href="https://bugs.launchpad.net/neutron/+bug/1223267">https://bugs.launchpad.net/neutron/+bug/1223267</a></div><div><br></div><div>Hybrid vif-driver makes it possible to leverage iptables-based security group feature. However, this dramatical performance reduction might be a big cost, especially in 10 GE environment.</div>
<div><br></div><div>It'll be appricated, if you share some suggestions on how to solve this issue. Thanks very much.<br><div><br></div><div style>Best,</div><div style>Robin Wang</div></div></div>