Powershell이 ​​완성 된 스크립트에 멀티 스레딩을 추가했습니다.

Question

scarpt가 있는데, 잘 작동하지만 멀티 스레딩을 사용하여 약간 속도를 높이고 싶습니다. 문제는 많은 코드를 변경하지 않고서는 어렵다는 것입니다. 나는 새로운 분리 된 범위로 일자리를 피하고 싶지만 불가능한 것처럼 보입니다. 또한 시작 작업은 정말 느리고 실행을 시작하려면 ~ 150 밀리 초가 필요합니다. 작업을 피할 수있는 방법이 없습니까? 아니면 최소한이 스크립트가 예상대로 작동하지 않을까요?

Param(
    [int]$arg1 = 2, [int]$arg2 = 3 
) 
$functionDoSomething = { 
    function doSomething($inp) { 
     return $inp + 10 
    } 
} 

function doSomething($inp) { 
    return $inp + 10 
} 

# time: 1523337 ticks 
Measure-Command { 
    Start-Job -Name Job1 -InitializationScript $functionDoSomething -ScriptBlock { 
     return doSomething ($arg1 + $arg2) 
    } -ArgumentList $arg1, $arg2 
    Wait-Job Job1 
    $var2 = Receive-Job Job1 # result is 10, so arguements aren't passed correctly, trick with @($arg1, arg2) = the same result 
} 

# time: 6867 ticks 
Measure-Command { 
    $var3 = doSomething ($arg1 + $arg2) # result is 15 
} 

Answer 1

# Have no fear - Invoke-Parallel is here. Hoping that I can help steer you in the right direction. Let me show you some pseudo code that can point you in the right direction. 

# You need a list of objects in which you want to perform an operation for 
$listOfComputers = @(
'1' 
'2' 
'3' 
) 

# Pipe your array to Invoke-Parallel which takes care of opening threads depending on the amount of objects piped in. 
# If you want to control the amount of simultaneous threads simply help Invoke-Parallel -ShowWindow to see how 
$results = $listOfComputers | Invoke-Parallel -ScriptBlock { 
function doSomething($inp) 
{ 
    return [int]$inp + 10 
} 
if ($_ -eq '1') { Start-Sleep -Seconds 15; Write-Verbose 'Waited 15s' } # Adding this so you can see that this script block is running in a multi-threaded fashion 
# $_ refers to the values inside of $listOfComputers 
return doSomething ($_) 
} -Verbose 

$results 

<# Notice how 11 comes up last 
12 
13 
11 
#> 

Answer 2

먼저 (제대로 인수를 전달에는 두 배 기능), 실행 영역과 RunSpacePool 들여다 보지. runspace를 만들 때 기본값 이외의 모듈이로드되도록 지정할 수 있습니다. 자세한 내용은 http://www.get-blog.com/?p=189을 참조하십시오.

$ScriptBlock = { 
param([string]$forinput) 
    "Do something with $forinput" 

    [PSCusomObject]@{ 
    Line1="Something" 
    Line2="Something done to $forinput" 
    }#end of custom object output 

}#end script block 

#Create Runspace pool, 100 min and max. 
#Example data contained within $item.property 
$RunspacePool = [RunspaceFactory]::CreateRunspacePool(100,100) 
$RunspacePool.Open() 
$Jobs = 
foreach ($item in $VariableContainsListOfInput) 
{ 
    $Job = [powershell]::Create(). 
    AddScript($ScriptBlock). 
    AddArgument($item.property) 
    $Job.RunspacePool = $RunspacePool 

[PSCustomObject]@{ 
    Pipe = $Job 
    Result = $Job.BeginInvoke() 
} 
} 

DO{Start-sleep -seconds 1 
}While($Jobs.Result.IsCompleted -contains $false) 

#Loop through jobs, pipe EndInvoke data from runspace into Export-CSV 
$(ForEach ($Job in $Jobs) 
{ $Job.Pipe.EndInvoke($Job.Result) }) | 
Export-Csv -Path "$FullPath\$file" -NoTypeInformation 
#clean up runspace 
$RunspacePool.Close() 
$RunspacePool.Dispose()