You can change the size of the buffer for packet aggregation for virtual machine connections through VMXNET 3 network adapters. Increase the buffer size to reduce the number of TCP acknowledgments and improve efficiency in workloads.

1

In the vSphere Web Client, navigate to the host.

2

On the Manage tab, click Settings.

3

Expand the System section and click Advanced System Settings.

4

Enter a value between 1 and 65535 for the Net.VmxnetLROMaxLength parameter to set the LRO buffer size in bytes.

By default the size of the LRO buffer is equal to 32000 bytes.