如何注册Perf.PowerShell Snapin

在电脑上运行命令(powershell的版本是4.0的)： Add-PSSnapin perf.powershell 报错，请问怎么注册安装‘perf.powershell’呢，看网上好像说需要用installutil.exe工具注册，具体怎么注册呢？

Add-PSSnapin : The Windows PowerShell snap-in 'perf.powershell' is not installed on this computer.
At line:1 char:1
+ Add-PSSnapin perf.powershell
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 + CategoryInfo : InvalidArgument: (perf.powershell:String) [Add-PSSnapin], PSArgumentException
 + FullyQualifiedErrorId : AddPSSnapInRead,Microsoft.PowerShell.Commands.AddPSSnapinCommand
 有些机器上运行这个命令没问题，通过Get-PSSnapin -Registered可以看到perf.powershell已经注册了
 Name : Perf.Powershell
PSVersion : 4.0
Description : Performance PowerShell Cmdlets