您还可以从历史记录中获取最后一个命令，并从它的StartExecutionTime中减去它的EndExecutionTime。

.\do_something.ps1  
$command = Get-History -Count 1  
$command.EndExecutionTime - $command.StartExecutionTime

使用秒表和格式化经过的时间:

Function FormatElapsedTime($ts) 
{
    $elapsedTime = ""

    if ( $ts.Minutes -gt 0 )
    {
        $elapsedTime = [string]::Format( "{0:00} min. {1:00}.{2:00} sec.", $ts.Minutes, $ts.Seconds, $ts.Milliseconds / 10 );
    }
    else
    {
        $elapsedTime = [string]::Format( "{0:00}.{1:00} sec.", $ts.Seconds, $ts.Milliseconds / 10 );
    }

    if ($ts.Hours -eq 0 -and $ts.Minutes -eq 0 -and $ts.Seconds -eq 0)
    {
        $elapsedTime = [string]::Format("{0:00} ms.", $ts.Milliseconds);
    }

    if ($ts.Milliseconds -eq 0)
    {
        $elapsedTime = [string]::Format("{0} ms", $ts.TotalMilliseconds);
    }

    return $elapsedTime
}

Function StepTimeBlock($step, $block) 
{
    Write-Host "`r`n*****"
    Write-Host $step
    Write-Host "`r`n*****"

    $sw = [Diagnostics.Stopwatch]::StartNew()
    &$block
    $sw.Stop()
    $time = $sw.Elapsed

    $formatTime = FormatElapsedTime $time
    Write-Host "`r`n`t=====> $step took $formatTime"
}

使用样本

StepTimeBlock ("Publish {0} Reports" -f $Script:ArrayReportsList.Count)  { 
    $Script:ArrayReportsList | % { Publish-Report $WebServiceSSRSRDL $_ $CarpetaReports $CarpetaDataSources $Script:datasourceReport };
}

StepTimeBlock ("My Process")  {  .\do_something.ps1 }

下面是我写的一个函数，它的工作原理类似于Unix的time命令:

function time {
    Param(
        [Parameter(Mandatory=$true)]
        [string]$command,
        [switch]$quiet = $false
    )
    $start = Get-Date
    try {
        if ( -not $quiet ) {
            iex $command | Write-Host
        } else {
            iex $command > $null
        }
    } finally {
        $(Get-Date) - $start
    }
}

来源:https://gist.github.com/bender-the-greatest/741f696d965ed9728dc6287bdd336874

(measure-commmand{your command}).totalseconds

例如

(measure-commmand{.\do_something.ps1}).totalseconds

Yup.

Measure-Command { .\do_something.ps1 }

注意，Measure-Command的一个小缺点是看不到标准输出。

[更新，感谢@JasonMArcher]你可以通过将命令输出输出到一些可写入主机的命令集来修复这个问题，例如Out-Default，这样它就变成:

Measure-Command { .\do_something.ps1 | Out-Default }

查看输出的另一种方法是使用。net Stopwatch类，像这样:

$sw = [Diagnostics.Stopwatch]::StartNew()
.\do_something.ps1
$sw.Stop()
$sw.Elapsed

使用Measure-Command

例子

Measure-Command { <your command here> | Out-Host }

到Out-Host的管道允许您查看命令的输出，即 否则由测量命令消耗。