Examine whether hardware TSO is enabled in the VMkernel when you estimate the networking performance on a host that runs latency-sensitive workloads. By default, hardware TSO is enabled on an ESXi host.


  1. In the vSphere Client, navigate to the host.
  2. On the Configure tab, expand System.
  3. Click Advanced System Settings.
  4. Examine the value of the Net.UseHwTSO and Net.UseHwTSO6 parameters.
    Net.UseHwTSO shows the TSO state for IPv4, and Net.UseHwTSO6 for IPv6. TSO is enabled if the property is set to 1.