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frankdenneman Frank Denneman is a Chief Technologist at VMware, primarily focusing on Machine Learning technology. He is an author of the vSphere host and clustering deep dive series, podcast host for the Unexplored Territory podcast, and you can follow him on Twitter @frankdenneman.

60 Minutes of NUMA VMworld Session Commands

17 sec read

Verify Distribution of Memory Modules with PowerCLI

Get-CimInstance -CimSession $Session CIM_PhysicalMemory | select BankLabel, Description, @{n=‘Capacity in GB';e={$_.Capacity/1GB}}

PowerCLI Script to Detect Node Interleaving 

Get-VMhost | select @{Name="Host Name";Expression={$_.Name}}, ​@{Name="CPU Sockets";Expression={$_.ExtensionData.Hardware.CpuInfo.NumCpuPackages}}, ​@{Name="NUMA Nodes";Expression={$_.ExtensionData.Hardware.NumaInfo.NumNodes}}

Action-Affinity Monitoring

Sched-Stats
-t numa-migration

Disable Action Affinity

numa.LocalityWeightActionAffinity = 0

numa.PreferHT

For more information on how to enable PreferHT: KB article 2003582 

Host Setting:  numa.PreferHT=1  
VM Setting:  numa.vcpu.PreferHT = TRUE

frankdenneman Frank Denneman is a Chief Technologist at VMware, primarily focusing on Machine Learning technology. He is an author of the vSphere host and clustering deep dive series, podcast host for the Unexplored Territory podcast, and you can follow him on Twitter @frankdenneman.
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3 Replies to “60 Minutes of NUMA VMworld Session Commands”

  2. Your session was the last one at VMworld 2019 Europe before I flew back to the UK and can I say it was numa.af :-). It was an area of virtualisation that I had not considered in depth, but now I will be paying more attention to it. So thanks for insight.

    1. Thanks for the kind words and glad to be of help. In the host deep dive book I go into much more detail. It’s available at amazon, and a free ebook version is available at hostdeepdive.com

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