<div dir="ltr">Hi Fernando,<br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Nov 27, 2017 at 9:25 PM, FERNANDO FREDIANI <span dir="ltr"><<a href="mailto:fernando.frediani@upx.com" target="_blank">fernando.frediani@upx.com</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 bgcolor="#FFFFFF">
<font face="arial, helvetica, sans-serif">Hello<br>
<br>
As some may have seen recently OVS DPDK has been introduced to
oVirt (<a class="gmail-m_4050765780074698563moz-txt-link-freetext" href="https://ovirt.org/blog/2017/09/ovs-dpdk/" target="_blank">https://ovirt.org/blog/2017/<wbr>09/ovs-dpdk/</a>). This is very
interesting feature which can make a huge performance difference
in terms of network performance.<br>
<br>
Just wanted to ask if anyone has tested it in any environment and
made any comparison, specially for packet forward (e.g: running
Virtual Routers or Virtual Firewalls with virtio) or packet
dropping as well.</font></div></blockquote><div><br></div><div>You can see Intel OVS DPDK performance results compared to OVS native in <a href="https://download.01.org/packet-processing/ONPS2.1/Intel_ONP_Release_2.1_Performance_Test_Report_Rev1.0.pdf">https://download.01.org/packet-processing/ONPS2.1/Intel_ONP_Release_2.1_Performance_Test_Report_Rev1.0.pdf</a></div><div><br></div><div>Performance results of OVS DPDK in oVirt setup will be published soon.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF"><br><font face="arial, helvetica, sans-serif">
One doubt I have and if someone could clarify is: Should I enable
DPDK in the Host any traffic forwarded to any VMs will
automatically benefit from this performance gain of DPDK or there
additional steps that need to be put in place inside the VM when
sharing a physical Network Interface ?</font></div></blockquote><div><br></div><div>Enabling DPDK is not enough. Since it's tightly coupled to system hardware a few steps are needed in order to achieve good performance results. For example: disabling interrupts, enabling hugepages, isolating CPU cores, allocating them to PMD threads and pinning vcpus.</div><div><br></div><div>More information can be found here:</div><div><a href="http://docs.openvswitch.org/en/latest/intro/install/dpdk/">http://docs.openvswitch.org/en/latest/intro/install/dpdk/<br></a></div><div><a href="http://dpdk.org/doc/guides-16.04/linux_gsg/nic_perf_intel_platform.html">http://dpdk.org/doc/guides-16.04/linux_gsg/nic_perf_intel_platform.html<br></a></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF"><br>
<br><font face="arial, helvetica, sans-serif">
Thanks</font><span class="gmail-HOEnZb" style="font-family:arial,helvetica,sans-serif"><font color="#888888"><br>
Fernando<br>
</font></span>
</div>
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