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Public bug reported:
During some of the performance tests, it was observed that on few of the
10G nics (intel br kx4 dual-port, intel 82599es), enabling the csum
option boosted the vxlan/geneve performance by triggering GRO on the
receiver.
Kindly refer to the link for more details on the role of csum in vxlan performance.
http://openvswitch.org/pipermail/dev/2015-August/059335.html
This defect is created to add an additional option (tunnel_csum) in the
ovs agent. This option will be passed to the ovs agent, which in turn
will set the "option:csum" during the creation of GRE, VXLAN, and GENEVE
tunnels
The provision for this option is available in OVS 2.4 for vxlan/geneve.
The changes for this option will be on similar lines of "dont_fragment"
flag.
** Affects: neutron
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1492111
Title:
Support to set an optional csum attribute on ovs tunnels
Status in neutron:
New
Bug description:
During some of the performance tests, it was observed that on few of
the 10G nics (intel br kx4 dual-port, intel 82599es), enabling the
csum option boosted the vxlan/geneve performance by triggering GRO on
the receiver.
Kindly refer to the link for more details on the role of csum in vxlan performance.
http://openvswitch.org/pipermail/dev/2015-August/059335.html
This defect is created to add an additional option (tunnel_csum) in
the ovs agent. This option will be passed to the ovs agent, which in
turn will set the "option:csum" during the creation of GRE, VXLAN, and
GENEVE tunnels
The provision for this option is available in OVS 2.4 for
vxlan/geneve.
The changes for this option will be on similar lines of
"dont_fragment" flag.
To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1492111/+subscriptions
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