VMWare RSS and TCPIP Optimizations

[EUCweb]

From @matthias-schimm on March 12, 2018 20:38

Script to enable or disable RSS via Policy. If enabled via Policy then configuration should take place to try and set performance-based results. 2017 "best practices" are to configure RSS as follows:

• Use "N-1" CPU's and assign to RSS.
  EG, if a system has 4 CPU's, assign 3 to RSS for a single NIC
• Use NUMA for RSS and divide CPU time along NUMA configurations. eg, in a 2 x 6 vCPU system (12 total) with a single NIC assign 5 CPU's on NUMA node 0 to the NIC. If two NIC's are present, then assign 5 vCPU's on NUMA 0 to NIC1 and 5 vCPU's on NUMA1 to NIC2

Copied from original issue: #20

[Trentent]

First draft of this is complete. Requires creating policy configuration to enable/disable feature.

I imagine if we "disable" this feature then no NUMA math or anything assigned...

2nd question is should we detect if NUMA is available on the VM/machine? There are configurations in both BIOS and on the VM level that can disable NUMA so any configuration is useless anyways. I do have a working PowerShell script with PInvoke to check for the presence of NUMA.
Find_NumaNodePresent.zip

[matthias-schlimm]

05_AHSCustom_VMWareTCPIPOptimizations.ps1.zip

[matthias-schlimm]

integrated into BB_develop, script is processing during preparation 05_PrepBISF_VMWareTCPIPOptimizations.ps1