<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On Jan 30, 2014, at 6:26 AM, CARVER, PAUL <<a href="mailto:pc2929@att.com">pc2929@att.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div lang="EN-US" link="blue" vlink="purple" style="font-family: Menlo-Regular; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class="WordSection1" style="page: WordSection1;"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 10pt; font-family: Tahoma, sans-serif;">Vishvananda Ishaya wrote:</span><span style="font-family: SimSun;"><o:p></o:p></span></div><div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p> </o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="color: rgb(31, 73, 125);">></span>In testing I have been unable to saturate a 10g link using a single VM. Even with multiple streams,<span style="color: rgb(31, 73, 125);"><o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">></span>the best I have been able to do (using virtio and vhost_net is about 7.8g.<o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"> </span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Can you share details about your hardware and vSwitch config (possibly off list if that isn’t a valid openstack-dev topic)<o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"> </span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">I haven’t been able to spend any time on serious performance testing, but just doing preliminary testing on a HP BL460cG8 and Virtual Connect I haven’t been able to push more than about 1Gbps using a pretty vanilla Havana install with OvS and VLANs (no GRE).</span></div></div></div></div></blockquote><div><br></div>This is using nova-network mode. There are likely new software bottlenecks introduced by Neutron/OVS, but a huge amount of performance tweaking is around jumbo frames and vhost-net. This article has a bunch of excellent suggestions:</div><div><br></div><div><a href="http://buriedlede.blogspot.com/2012/11/driving-100-gigabit-network-with.html">http://buriedlede.blogspot.com/2012/11/driving-100-gigabit-network-with.html</a></div><div><br></div><div>Vish</div><div><br><blockquote type="cite"><div lang="EN-US" link="blue" vlink="purple" style="font-family: Menlo-Regular; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class="WordSection1" style="page: WordSection1;"><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"><o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"> </span></div></div></div>_______________________________________________<br>OpenStack-dev mailing list<br><a href="mailto:OpenStack-dev@lists.openstack.org" style="color: purple; text-decoration: underline;">OpenStack-dev@lists.openstack.org</a><br><a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev" style="color: purple; text-decoration: underline;">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev</a></div></blockquote></div><br></body></html>