8.85 Performance Impact for Less than 8 CPUs Configured for dom0

For best performance, if dom0 is configured with less than 8 CPUs, the xen_netback max_queues option in the ovs.conf file should be set to the number of CPUs configured for dom0. For example, if you configure dom0 with 6 CPUs, then you should set the value of the xen_netback max_queues option to 6.

Workaround:

  1. Start an ssh session to Oracle VM Server.

  2. Open /etc/modprobe.d/ovs.conf for editing.

  3. Set the value of the xen_netback max_queues option equal to the number of CPUs configured for dom0.

  4. Reboot Oracle VM Server for the setting to take effect.

Bug 22817196

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