You can configure VM vNIC with multi SRIOV to balance workload on multiple Physical Network Adapters (pnic) to avoid network traffic congestion on one pnic while no traffic on another pnic. This application can be NUMA aligned with pnic to avoid performance loss. Two pnic work as pairs for physical connectivity redundancy, and different pairs for differeny traffic or VLAN.
Note:
- In VMware Integrated OpenStack 7.2, if you create an instance with SRIOV network adapter, the instance is put in the same NUMA node of the SRIOV pnic automatically if no
numa.nodeAffinity
is specified in the flavor. Ifnuma.nodeAffinity
is already specified in flavor, it overrides the NUMA setting from pnic. - With this feature, you can specify which SRIOV PF the SRIOV port can connect to. You can see the mapping information defined in nova_compute/pci/passthrough_whitelist. The SRIOV port of the physical network can be linked to the SRIOV PF specified by the address.
- You cannot change VF number in ESXi after deployment. If you want to increase the VF number, then you must restart the corresponding Nova Compute pod. There is no support for decreasing the VF number in VMware Integrated OpenStack.