Uniform NUMA node design and NUMA-aware NIC teaming are crucial for deterministic performance of data plane workloads. This ensures that the same number of logical cores and NICs can be made available to workloads, irrespective of the NUMA node to which they are pinned by the ESXi scheduler.

Consider using NSX Load Balanced (LB) Source Teaming Policy when the following conditions are met:

  • The Latency Sensitivity configuration for the worker node is set to High

  • VMXNET3 is used as the network adapter

When a worker node with the above conditions is powered on, the teaming policy triggers NSX to check the worker node placement and aligns its logical cores with the same NUMA.

The teaming policy does not consider NUMA alignment under the following conditions:

  • An LAG uplink is configured with NICs from multiple NUMA nodes

  • The worker node has affinity to or spans over multiple NUMA nodes

  • The ESXi host failed to determine NUMA information for either NICs or worker node

Note:

For more information about configuring the teaming policy, see Create an Uplink Profile in the NSX product documentation.