[Openstack-operators] [neutron] [os-vif] VF overcommitting and performance in SR-IOV

Maciej Kucia maciej at kucia.net
Mon Jan 22 16:36:17 UTC 2018


Hi!

Is there any noticeable performance penalty when using multiple virtual
functions?

For simplicity I am enabling all available virtual functions in my NICs.
Sometimes application is using only few of them. I am using Intel and
Mellanox.

I do not see any performance drop but I am getting feedback that this might
not be the best approach.

Any recommendations?

Thanks,
Maciej
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