get_esxi_cpuoc.ps1

Get-VMHost | Sort-Object Name | % {
    $hv = $_
    $hv_pcpu_count = $hv.NumCpu
    $power_on_vms = $hv | Get-VM | where {$_.PowerState -eq "PoweredOn"}
    $hv_vcpu_count = ($power_on_vms| Measure-Object -Sum NumCpu).Sum + 0
    $hv_oc_percent = $hv_vcpu_count / $hv_pcpu_count * 100

    "-----"
    $hv.Parent.Name + "/" + $hv.Name + " ConnectionState:" + $hv.ConnectionState
    "$hv_pcpu_count pCPU で、$hv_vcpu_count vCPU が起動中です。"
    "vCPU: " + ("■" * $hv_vcpu_count) + " => オーバーコミット: " + $hv_oc_percent + "%"
    "pCPU: " + ("□" * $hv_pcpu_count)
}

以前の下記投稿より。
PowerCLI で ESXiのCPUオーバコミット「見える化」
https://gowatana.github.io/vmtn-blogs-backup/communities.vmware.com/people/gowatana/blog/2013/08/06/powercli-%E3%81%A7-esxi%E3%81%AEcpu%E3%82%AA%E3%83%BC%E3%83%90%E3%82%B3%E3%83%9F%E3%83%83%E3%83%88-%E8%A6%8B%E3%81%88%E3%82%8B%E5%8C%96.html