多线程异步执行脚本

获取远程计算机信息：

 1 $d=get-date
 2 $servers="10.4.34.41","10.4.34.40","10.4.34.36","10.4.34.37","10.4.34.39"
 3 $serverpass="Dell1950"
 4 $UserName="Administrator"
 5 
 6 #定义线程数量
 7 $throttleLimit = 5
 8 $SessionState = [system.management.automation.runspaces.initialsessionstate]::CreateDefault()
 9 $Pool = [runspacefactory]::CreateRunspacePool(1, $throttleLimit, $SessionState, $Host)
10 $Pool.Open()
11 
12 #脚本块 
13 $ScriptBlock = {
14 param($server,$serverpass,$username)
15 $Password = ConvertTo-SecureString $serverpass -AsPlainText –Force
16 $cred = New-Object System.Management.Automation.PSCredential($UserName,$Password)
17 $cs = gwmi win32_computersystem -computer $server -Credential $cred
18 $cs.Name
19 }
20 
21 
22 $threads = @()
23 $handles = foreach ($server in $servers) {
24 $powershell = [powershell]::Create().AddScript($ScriptBlock).AddArgument($server).AddArgument($serverpass).AddArgument($username)
25 $powershell.RunspacePool = $Pool
26 $powershell.BeginInvoke()
27 $threads += $powershell
28 }
29 
30 
31 do {
32 $i = 0
33 $done = $true
34 foreach ($handle in $handles) 
35 {
36 if ($handle -ne $null) 
37 {
38 if ($handle.IsCompleted) 
39 {
40 $threads[$i].EndInvoke($handle)
41 $threads[$i].Dispose()
42 $handles[$i] = $null
43 } 
44 else {$done = $false}
45 }
46 $i++
47 }
48 if (-not $done) { Start-Sleep -Milliseconds 500 }
49 } until ($done)
50 
51 New-TimeSpan $d

==============================

进度提示：异步线程

 1 function Start-Progress {
 2   param(
 3     [ScriptBlock]
 4     $code
 5   )
 6    
 7   $newPowerShell = [PowerShell]::Create().AddScript($code)
 8   $handle = $newPowerShell.BeginInvoke()
 9    
10   while ($handle.IsCompleted -eq $false) {
11     Write-Host '.' -NoNewline
12     Start-Sleep -Milliseconds 500
13   }
14    
15   Write-Host ''
16    
17   $newPowerShell.EndInvoke($handle)
18    
19   $newPowerShell.Runspace.Close()
20   $newPowerShell.Dispose()
21 }

From：http://www.pstips.net/speeding-up-powershell-multithreading.html