9:25 p.m.
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Hello
As some may have seen recently OVS DPDK has been introduced to oVirt
(https://ovirt.org/blog/2017/09/ovs-dpdk/). This is very interesting
feature which can make a huge performance difference in terms of network
performance.
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.
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 ?
Thanks
Fernando
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<font face="arial, helvetica, sans-serif">Hello<br>
<br>
As some may have seen recently OVS DPDK has been introduced to
oVirt (<a class="moz-txt-link-freetext"
href="https://ovirt.org/blog/2017/09/ovs-dpdk/">https://ovir...>).
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.<br>
<br>
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 ?<br>
<br>
Thanks<br>
Fernando<br>
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10:12 a.m.
Hi Fernando,
On Mon, Nov 27, 2017 at 9:25 PM, FERNANDO FREDIANI <
fernando.frediani(a)upx.com> wrote:
Hello
As some may have seen recently OVS DPDK has been introduced to oVirt (
https://ovirt.org/blog/2017/09/ovs-dpdk/). This is very interesting
feature which can make a huge performance difference in terms of network
performance.
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.
You can see Intel OVS DPDK performance results compared to OVS native in
https://download.01.org/packet-processing/ONPS2.1/Intel_ONP_Release_2.1_P...
Performance results of OVS DPDK in oVirt setup will be published soon.
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 ?
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.
More information can be found here:
http://docs.openvswitch.org/en/latest/intro/install/dpdk/
http://dpdk.org/doc/guides-16.04/linux_gsg/nic_perf_intel_platform.html
Thanks
Fernando
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
--
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1:40 p.m.
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Yes Irit, but you say in the Host side that has the OVS which is
connected to the VMs. Or are there any further steps to be done also on
the VMs in certain cases. In short it would be interesting if you don't
have to do much inside the VM, only in the host to have some performance
improvment gains. Do you think that is feasible ?
Fernando
On 28/11/2017 06:12, Irit Goihman wrote:
Hi Fernando,
On Mon, Nov 27, 2017 at 9:25 PM, FERNANDO FREDIANI
<fernando.frediani(a)upx.com <mailto:fernando.frediani@upx.com>> wrote:
Hello
As some may have seen recently OVS DPDK has been introduced to
oVirt (https://ovirt.org/blog/2017/09/ovs-dpdk/
<https://ovirt.org/blog/2017/09/ovs-dpdk/>). This is very
interesting feature which can make a huge performance difference
in terms of network performance.
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.
You can see Intel OVS DPDK performance results compared to OVS native
in
https://download.01.org/packet-processing/ONPS2.1/Intel_ONP_Release_2.1_P...
Performance results of OVS DPDK in oVirt setup will be published soon.
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 ?
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.
More information can be found here:
http://docs.openvswitch.org/en/latest/intro/install/dpdk/
http://dpdk.org/doc/guides-16.04/linux_gsg/nic_perf_intel_platform.html
Thanks
Fernando
_______________________________________________
Users mailing list
Users(a)ovirt.org <mailto:Users@ovirt.org>
http://lists.ovirt.org/mailman/listinfo/users
<http://lists.ovirt.org/mailman/listinfo/users>
--
IRIT GOIHMAN
SOFTWARE ENGINEER
EMEA VIRTUALIZATION R&D
Red Hat EMEA <https://www.redhat.com/>
<https://red.ht/sig>
TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>
@redhatnews <https://twitter.com/redhatnews> Red Hat
<https://www.linkedin.com/company/red-hat> Red Hat
<https://www.facebook.com/RedHatInc>
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<p>Yes Irit, but you say in the Host side that has the OVS which is
connected to the VMs. Or are there any further steps to be done
also on the VMs in certain cases. In short it would be interesting
if you don't have to do much inside the VM, only in the host to
have some performance improvment gains. Do you think that is
feasible ?<br>
</p>
<p>Fernando<br>
</p>
<br>
<div class="moz-cite-prefix">On 28/11/2017 06:12, Irit Goihman
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAA=i7HOhcsAO8DCzjpuKcyQn8Vw75BaLS2oi_rsDk_v+HgNLUg@mail.gmail.com">
<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"
moz-do-not-send="true">fernando.frediani(a)upx.com</a>&gt;</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"
moz-do-not-send="true">https://ovirt.org/blog/2017/<wbr&g...>).
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_Re...
moz-do-not-send="true">https://download.01.org/packet-proces...
<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/"
moz-do-not-send="true">http://docs.openvswitch.org/en/latest...
</a></div>
<div><a
href="http://dpdk.org/doc/guides-16.04/linux_gsg/nic_perf_intel_plat...
moz-do-not-send="true">http://dpdk.org/doc/guides-16.04/linu...
</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>
<br>
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rel="noreferrer" target="_blank"
moz-do-not-send="true">http://lists.ovirt.org/<wbr>mai...
<br>
</blockquote>
</div>
<br>
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</div>
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FERNANDO FREDIANI -
Irit Goihman