PowerCLI Use Esxtop to Get Information on the Virtual CPUs of a Virtual Machine

ou can use the Get-EsxTop cmdlet to retrieve real-time data for troubleshooting performance problems.

Prerequisites

Verify that you are connected to a server that runs ESX 4.0, vCenter Server 5.0 or later.

Procedure

1	Get the group to which the virtual machine belongs and save it as a variable. $group = Get-EsxTop -CounterName SchedGroup | where {$_.VMName -eq $vm.Name}
2	Get the IDs of all virtual CPUs of the virtual machine and store them in an array. $gr = Get-EsxTop -TopologyInfo -Topology SchedGroup | %{$_.Entries} | where {$_.GroupId -eq $group.GroupID} $cpuIds = @() $gr.CpuClient | %{$cpuIds += $_.CPUClientID}
3	Get the CPU statistics for the virtual machine. $cpuStats = Get-EsxTop -CounterName VCPU | where {$cpuIds -contains $_.VCPUID}
4	Calculate the used and ready for use percentage by using the UsedTimeInUsec and ReadyTimeInUsec stats. $result = @() $cpuStats | %{ ` $row = "" | select VCPUID, Used, Ready; ` $row.VCPUID = $_.VCPUID; ` $row.Used = [math]::Round(([double]$_.UsedTimeInUsec/[double]$_.UpTimeInUsec)*100, 2); ` $row.Ready = [math]::Round(([double]$_.ReadyTimeInUsec/[double]$_.UpTimeInUsec)*100, 2);` $result += $row }
5	View the used and ready for use percentage for each virtual CPU of the virtual machine. $result | Format-Table –AutoSize