Feature comparison between RSS and RSSv2

Products

• VMware vSphere ESXi

Issue/Introduction

This KB describes the various new features introduced with the RSSv2 compared to the RSS that was present in the previous ESX releases.

Environment

VMware vSphere ESXi 6.7

Resolution

RSS Type	Meaning	Way to configure RSS engines of device	Entities recognized and managed by Netqueue load balancer
			Number of NetQ_RSS engines	Default Queue RSS engine	Device RSS engine	Non-uniform RSS engine configurations	Dynamic sized NetQ_RSS engine	RSS engine indirection table
RSS	This category involves drivers which do not use new RSS vmkernel API introduced in ESX 6.7, to expose RSS engines in the device.	Driver specific module parameter which allow configuring, (a) single NetQ_RSS engine and number of hardware queues in this engine, (b) DefQ_RSS engine and number of hardware queues in this engine, (c) Device_RSS engine and number of hardware queues in this engine	1	No	No	No	No	Only of NetQ_RSS engine
RSSv2	This category involves drivers which use new RSS vmkernel API introduced in ESX 6.7, to expose RSS engines in the device.	By using 6.7 new RSS vmkernel API, driver exposes all its RSS related configurations to ESX networking stack. So, driver would not need RSS related driver module parameters, also in future promote ESX to change those configurations dynamically at runtime.	Up to 16	Yes	Yes	Yes	Yes	Of all RSS engines