Get VM`s Host CPU and Memory Usage

[ganapa2000]

Hi,

How can I get VM`s realtime ESX Host CPU and Memory Usage from PowerCLI.

I can see from vCenter, but I am not sure how can I get the realtime details.

Please help

[LucD]

You have to use the Realtime switch on the Get-Stat cmdlet.

[ganapa2000]

Hi LucD,

I tried as below and getting the error

$allvms = @()

$vms = Get-VMHost 'esx1' | get-vm

foreach($vm in $vms){

$vmstat = "" | Select VmName, MemMax, MemAvg, MemMin, CPUMax, CPUAvg, CPUMin

$vmstat.VmName = $vm.name

$Stat = Get-Stat -entity $vm.name -cpu -memory -maxsamples 1 -realtime

$statcpu    = ($stat | Where-Object {$_.MetricId -eq "cpu.usage.average" -and !$_.Instance}).value

$statmem = ($stat | Where-Object {$_.MetricId -eq "mem.usage.average"}).value

$cpu = $statcpu | Measure-Object -Property value -Average -Maximum -Minimum

$mem = $statmem | Measure-Object -Property value -Average -Maximum -Minimum

$vmstat.CPUMax = $cpu.Maximum

$vmstat.CPUAvg = $cpu.Average

$vmstat.CPUMin = $cpu.Minimum

$vmstat.MemMax = $mem.Maximum

$vmstat.MemAvg = $mem.Average

$vmstat.MemMin = $mem.Minimum

$allvms += $vmstat

}

$allvms | Select VmName, MemMax, MemAvg, MemMin, CPUMax, CPUAvg, CPUMin | ft -auto

Error

Measure-Object : The property "value" cannot be found in the input for any objects.

At D:\myreports\Performance\perf1.ps1:38 char:19

+ ...  $statcpu | Measure-Object -Property value -Average -Maximum -Minimum ...

+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : InvalidArgument: (:) [Measure-Object], PSArgumentException

    + FullyQualifiedErrorId : GenericMeasurePropertyNotFound,Microsoft.PowerShell.Commands.MeasureObjectCommand

Measure-Object : The property "value" cannot be found in the input for any objects.

At D:\myreports\Performance\perf1.ps1:39 char:19

+ ...  $statmem | Measure-Object -Property value -Average -Maximum -Minimum ...

+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : InvalidArgument: (:) [Measure-Object], PSArgumentException

    + FullyQualifiedErrorId : GenericMeasurePropertyNotFound,Microsoft.PowerShell.Commands.MeasureObjectCommand

Measure-Object : The property "value" cannot be found in the input for any objects.

At D:\myreports\Performance\perf1.ps1:38 char:19

+ ...  $statcpu | Measure-Object -Property value -Average -Maximum -Minimum ...

[LucD]

You already selected the Value property

$statcpu    = ($stat | Where-Object {$_.MetricId -eq "cpu.usage.average" -and !$_.Instance}).value

$statmem = ($stat | Where-Object {$_.MetricId -eq "mem.usage.average"}).value

so there is no Value property when you do the Measure-object.
You could do

$cpu = $statcpu | Measure-Object -Average -Maximum -Minimum

$mem = $statmem | Measure-Object -Average -Maximum -Minimum

On the other hand, since you used -Maxsamples 1, I don't really see the point of doing the Measure-Object.

[ganapa2000]

LucD,

I tried as per your reply and getting the error as below

script

$allvms = @()

$vms = Get-VMHost 'pocesx10.zeomega.loc' | get-vm

foreach($vm in $vms){

$vmstat = "" | Select VmName, MemMax, MemAvg, MemMin, CPUMax, CPUAvg, CPUMin

$vmstat.VmName = $vm.name

$Stat = Get-Stat -entity ($vm.name) -cpu -memory -maxsamples 1 -realtime

$cpu = $statcpu | Measure-Object -Property value -Average -Maximum -Minimum

$mem = $statmem | Measure-Object -Property value -Average -Maximum -Minimum

$vmstat.CPUMax = $cpu.Maximum

$vmstat.CPUAvg = $cpu.Average

$vmstat.CPUMin = $cpu.Minimum

$vmstat.MemMax = $mem.Maximum

$vmstat.MemAvg = $mem.Average

$vmstat.MemMin = $mem.Minimum

$allvms += $vmstat

}

$allvms | Select VmName, MemMax, MemAvg, MemMin, CPUMax, CPUAvg, CPUMin | ft -auto

Error

Get-Stat : 08/24/2020 11:07:29 AM       Get-Stat                The metric counter "mem.usage.average" doesn't exist for entity "APP04".

At D:\myreports\Performance\perf1.ps1:31 char:9

+ $Stat = Get-Stat -entity ($vm.name) -cpu -memory -maxsamples 1 -realt ...

+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ResourceUnavailable: (mem.usage.average:String) [Get-Stat], VimException

    + FullyQualifiedErrorId : Client20_RuntimeDataServiceImpl_CheckUserMetrics_MetricDoesntExist,VMware.VimAutomation.ViCore.Cmdlets.Commands.GetViStats

Get-Stat : 08/24/2020 11:07:29 AM       Get-Stat                The metric counter "mem.vmmemctl.average" doesn't exist for entity "APP04".

At D:\myreports\Performance\perf1.ps1:31 char:9

+ $Stat = Get-Stat -entity ($vm.name) -cpu -memory -maxsamples 1 -realt ...

+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ResourceUnavailable: (mem.vmmemctl.average:String) [Get-Stat], VimException

    + FullyQualifiedErrorId : Client20_RuntimeDataServiceImpl_CheckUserMetrics_MetricDoesntExist,VMware.VimAutomation.ViCore.Cmdlets.Commands.GetViStats

Get-Stat : 08/24/2020 11:07:29 AM       Get-Stat                The metric counter "mem.active.average" doesn't exist for entity "APP04".

At D:\myreports\Performance\perf1.ps1:31 char:9

+ $Stat = Get-Stat -entity ($vm.name) -cpu -memory -maxsamples 1 -realt ...

+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ResourceUnavailable: (mem.active.average:String) [Get-Stat], VimException

    + FullyQualifiedErrorId : Client20_RuntimeDataServiceImpl_CheckUserMetrics_MetricDoesntExist,VMware.VimAutomation.ViCore.Cmdlets.Commands.GetViStats

Get-Stat : 08/24/2020 11:07:29 AM       Get-Stat                The metric counter "mem.granted.average" doesn't exist for entity "APP04".

At D:\myreports\Performance\perf1.ps1:31 char:9

+ $Stat = Get-Stat -entity ($vm.name) -cpu -memory -maxsamples 1 -realt ...

+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ResourceUnavailable: (mem.granted.average:String) [Get-Stat], VimException

    + FullyQualifiedErrorId : Client20_RuntimeDataServiceImpl_CheckUserMetrics_MetricDoesntExist,VMware.VimAutomation.ViCore.Cmdlets.Commands.GetViStats

Get-Stat : 08/24/2020 11:07:29 AM       Get-Stat                The metric counter "cpu.usage.average" doesn't exist for entity "APP04".

At D:\myreports\Performance\perf1.ps1:31 char:9

+ $Stat = Get-Stat -entity ($vm.name) -cpu -memory -maxsamples 1 -realt ...

+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ResourceUnavailable: (cpu.usage.average:String) [Get-Stat], VimException

    + FullyQualifiedErrorId : Client20_RuntimeDataServiceImpl_CheckUserMetrics_MetricDoesntExist,VMware.VimAutomation.ViCore.Cmdlets.Commands.GetViStats

Get-Stat : 08/24/2020 11:07:29 AM       Get-Stat                The metric counter "cpu.usagemhz.average" doesn't exist for entity "APP04".

At D:\myreports\Performance\perf1.ps1:31 char:9

+ $Stat = Get-Stat -entity ($vm.name) -cpu -memory -maxsamples 1 -realt ...

+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ResourceUnavailable: (cpu.usagemhz.average:String) [Get-Stat], VimException

    + FullyQualifiedErrorId : Client20_RuntimeDataServiceImpl_CheckUserMetrics_MetricDoesntExist,VMware.VimAutomation.ViCore.Cmdlets.Commands.GetViStats

[LucD]

It looks as if that VM is not powered on or not sending statistical data.
You can avoid those errors by adding -ErrorAction SilentlyContinue on the Get-Stat cmdlet.
But that also means that this specific VM will not appear in your report.

[ganapa2000]

Hi LucD,

After adding the -ErrorAction SilentlyContinue the script executed but I am just seeing the VM Name in the output rest of the output shows blank.

VmName	MemMax	MemAvg	MemMin	CPUMax	CPUAvg	CPUMin
APP203
APP13

[LucD]

You are using the incorrect variable for the CPU and Memory statistics.

It should be $stat

$Stat = Get-Stat -Entity ($vm.name) -Cpu -Memory -MaxSamples 1 -Realtime -ErrorAction SilentlyContinue

$cpu = $stat | Measure-Object -Property value -Average -Maximum -Minimum

$mem = $stat | Measure-Object -Property value -Average -Maximum -Minimum

[ganapa2000]

Hi LucD,

now I am getting the output but number are not formatted properly. CPU and Memory details are not showing in Mhz and GB

How can I format the output of CPU in Mhz and Memory in GB ?

VmName	MemMax	MemAvg	MemMin	CPUMax	CPUAvg	CPUMin
APP203	15337472	1567335	0	15337472	1567335	0
APP13	16777216	1845560	0	16777216	1845560	0
APP16	12582912	1651552	0	12582912	1651552	0

[LucD]

I have no clue what code you are currently running.
If you are using the average metrics, these are in percentage

[ganapa2000]

LucD,

I am using below code

$allvms = @()

$vms = Get-VMHost 'esx10' | get-vm

foreach($vm in $vms){

$vmstat = "" | Select VmName, MemMax, MemAvg, MemMin, CPUMax, CPUAvg, CPUMin

$vmstat.VmName = $vm.name

$Stat = Get-Stat -entity ($vm.name) -cpu -memory -maxsamples 1 -realtime -ErrorAction SilentlyContinue

$cpu = $Stat | Measure-Object -Property value -Average -Maximum -Minimum

$mem = $Stat | Measure-Object -Property value -Average -Maximum -Minimum

$vmstat.CPUMax = $cpu.Maximum

$vmstat.CPUAvg = $cpu.Average

$vmstat.CPUMin = $cpu.Minimum

$vmstat.MemMax = $mem.Maximum

$vmstat.MemAvg = $mem.Average

$vmstat.MemMin = $mem.Minimum

$allvms += $vmstat

}

$allvms | Select VmName, MemMax, MemAvg, MemMin, CPUMax, CPUAvg, CPUMin | ft -auto

[LucD]

Still not sure why you calculate the minimum and maximum when you do a MaxSamples 1.
That makes no sense.

In any case, this is how I would run this

$sStat = @{

        Entity = Get-VMHost -Name 'esx10' | Get-VM

        Stat = 'cpu.usagemhz.average','mem.active.average'

        Instance = ''

        MaxSamples = 1

        Realtime = $true

        ErrorAction = 'SilentlyContinue'

    }

    Get-Stat @sStat | Group-Object -Property {$_.Entity.Name} -PipelineVariable group |

    ForEach-Object -Process {

        New-Object -TypeName PSObject -Property (

            [ordered]@{

                VmName = $group.Name

                'CPU GHz' = [math]::Round(($group.Group | where{$_.MetricId -eq 'cpu.usagemhz.average'}).Value / 1000,2)

                'Memory GB' = [math]::Round(($group.Group | where{$_.MetricId -eq 'mem.active.average'}).Value / 1MB,2)

            }

        )

    }| Format-Table -AutoSize

[ganapa2000]

LucD,

I am able to get the values but I see the output values captured is not matching with vCenter

PowerCLI output

vCenter output

[LucD · Accepted solution]

The Web Client seems to take mem.granted.average instead of mem.active.average.
The corrected code follows.

The difference in values is most probably explained by the difference in the sampling interval.

You take only 1 value, the latest.
While I suspect the Web Client looks over a longer interval and takes the average.
And before you ask, no, I don't know what interval the Web Client uses.

If you want to approach the values in the Web Client, you will have to do some experimenting with the interval duration.

$sStat = @{

        Entity = Get-VMHost -Name 'esx10' | Get-VM

        Stat = 'cpu.usagemhz.average','mem.granted.average'

        Instance = ''

        MaxSamples = 1

        Realtime = $true

        ErrorAction = 'SilentlyContinue'

    }

    Get-Stat @sStat | Group-Object -Property {$_.Entity.Name} -PipelineVariable group |

    ForEach-Object -Process {

        New-Object -TypeName PSObject -Property (

            [ordered]@{

                VmName = $group.Name

                'CPU GHz' = [math]::Round(($group.Group | where{$_.MetricId -eq 'cpu.usagemhz.average'}).Value / 1000,2)

                'Memory GB' = [math]::Round(($group.Group | where{$_.MetricId -eq 'mem.granted.average'}).Value / 1MB,2)

            }

        )

    }| Format-Table -AutoSize

[ganapa2000]

Thank you LucD. that matched the output

[gangadhar4950]

may i know why you had used this values

1000

1MB

[LucD]

1000: to go from MHz to GHz.
1024: to go from KB to GB

[GLBHCLVMWARE]

Re: powercli script that will pull the available cpu core to consumed CPU core and availablememory

[LucD]

???