Posts tagged virtual processor

In his blog “Using PowerShell to find the virtual processor to logical processor ratio of Hyper-V” Ben Amstrong shows us a way to calculate the virtual processor to logical processor ratio of Hyper-V. I used this script as starting point to collect some more processor information from servers running Hyper-V.

# Specifies hosts to query.

# When using a small array.

# $hosts = @('', '')

#When using a specific OU.

import-module activedirectory

$hosts = Get-ADComputer –filter * -SearchBase "OU=,DC=CONTOSO,DC=local"

foreach($hostName in $hosts)

{

# When using an small array please disable $hostName = $hostName.name

$hostName = $hostName.name

$VProc2LProcRatio = 8

$MaxVProc = ((gwmi -cn $hostName Win32_Processor) | measure -p NumberOfLogicalProcessors -sum).Sum * $VProc2LProcRatio

$VProcActive = (gwmi -cn $hostName -ns root\virtualization MSVM_Processor).count

$VProcLProc = (@(gwmi -cn $hostName -ns root\virtualization MSVM_Processor).count / (@(gwmi Win32_Processor) | measure -p NumberOfLogicalProcessors -sum).Sum)

$PProc = (@(gwmi -cn $hostName –ns root\cimv2 -Class Win32_Processor).count)

$PCores = (@(gwmi -cn $hostName -ns root\cimv2 -Class Win32_Processor) | measure -p NumberOfCores -sum).Sum

$LProc = (@(gwmi -cn $hostName Win32_Processor) | measure -p NumberOfLogicalProcessors -sum).Sum

Write-Host ' '

Write-Host 'Processor info for                               :' $hostName

Write-Host 'Physical processor(s) on this host               :' $PProc

Write-Host 'Number of cores on this host                     :' $PCores

Write-Host 'Logical processor on this host                   :' $LProc

Write-Host '-------------------------------------------------'

Write-Host 'Used Virtual processor:Logical processor ratio   :' $VProc2LProcRatio

Write-Host 'Maximum number of virtual processors             :' $MaxVProc -f red

Write-Host 'Active virtual processors                        :' $VProcActive

Write-Host '-------------------------------------------------'

Write-Host 'Used virtual processor(s) per logical processor  :' $VProcLProc -f yellow

Write-Host ' '

}