How to Use Multithreading script
I found this Multithreading script at http://www.get-blog.com/?p=189
Param($Command = $(Read-Host \"Enter the script file\"),
[Parameter(ValueFromPipeli
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This script, which I have adapted from the link and author in the synopsis, has good performance for me. I have modified it to take not only a range of ip addresses, but also an array of host names. Because of that, some of the variable names have poor names, but this is not production code so I have not invested in it beyond what I have below.
function Global:Ping-IPRange { <# .SYNOPSIS Sends ICMP echo request packets to a range of IPv4 addresses between two given addresses. .DESCRIPTION This function lets you sends ICMP echo request packets ("pings") to a range of IPv4 addresses using an asynchronous method. Therefore this technique is very fast but comes with a warning. Ping sweeping a large subnet or network with many swithes may result in a peak of broadcast traffic. Use the -Interval parameter to adjust the time between each ping request. For example, an interval of 60 milliseconds is suitable for wireless networks. The RawOutput parameter switches the output to an unformated [System.Net.NetworkInformation.PingReply[]]. .INPUTS None You cannot pipe input to this funcion. .OUTPUTS The function only returns output from successful pings. Type: System.Net.NetworkInformation.PingReply The RawOutput parameter switches the output to an unformated [System.Net.NetworkInformation.PingReply[]]. .NOTES Author : G.A.F.F. Jakobs Created : August 30, 2014 Version : 6 .EXAMPLE Ping-IPRange -StartAddress 192.168.1.1 -EndAddress 192.168.1.254 -Interval 20 IPAddress Bytes Ttl ResponseTime --------- ----- --- ------------ 192.168.1.41 32 64 371 192.168.1.57 32 128 0 192.168.1.64 32 128 1 192.168.1.63 32 64 88 192.168.1.254 32 64 0 In this example all the ip addresses between 192.168.1.1 and 192.168.1.254 are pinged using a 20 millisecond interval between each request. All the addresses that reply the ping request are listed. .EXAMPLE Ping-IPRange -HostName "host1" Ping-IPRange -HostName @('host1', 'host2') Ping-IPRange -HostName @('www.microsoft.com', 'www.google.com') .LINK http://gallery.technet.microsoft.com/Fast-asynchronous-ping-IP-d0a5cf0e #> [CmdletBinding(ConfirmImpact='Low')] Param( [parameter(Mandatory = $true, Position = 0, ParameterSetName='range')] [System.Net.IPAddress]$StartAddress, [parameter(Mandatory = $true, Position = 1, ParameterSetName='range')] [System.Net.IPAddress]$EndAddress, [parameter(Mandatory = $true, Position = 0, ParameterSetName='list')] [string[]]$HostName, [int]$Interval = 30, [Switch]$RawOutput = $false ) $timeout = 2000 function New-Range ($start, $end) { $addrList = [System.Collections.ArrayList]::new() [byte[]]$BySt = $start.GetAddressBytes() [Array]::Reverse($BySt) [byte[]]$ByEn = $end.GetAddressBytes() [Array]::Reverse($ByEn) $i1 = [System.BitConverter]::ToUInt32($BySt,0) $i2 = [System.BitConverter]::ToUInt32($ByEn,0) for($x = $i1;$x -le $i2;$x++){ $ip = ([System.Net.IPAddress]$x).GetAddressBytes() [Array]::Reverse($ip) $null = $addrList.Add([System.Net.IPAddress]::Parse($($ip -join '.'))) } ,$addrList } if ($HostName) { $IPrange = @($HostName) } else { [System.Collections.ArrayList]$IPrange = New-Range $StartAddress $EndAddress } $IpTotal = $IPrange.Count Get-Event -SourceIdentifier "ID-Ping*" | Remove-Event Get-EventSubscriber -SourceIdentifier "ID-Ping*" | Unregister-Event $index = 0 foreach ($ip in $IPrange){ if ($HostName) { [string]$VarName = "Ping_" + $ip + "_" + [guid]::NewGuid().ToString() } else { [string]$VarName = "Ping_" + $ip.Address } New-Variable -Name $VarName -Value (New-Object System.Net.NetworkInformation.Ping) Register-ObjectEvent -InputObject (Get-Variable $VarName -ValueOnly) -EventName PingCompleted -SourceIdentifier "ID-$VarName" (Get-Variable $VarName -ValueOnly).SendAsync($ip,$timeout,$VarName) try{ $pending = (Get-Event -SourceIdentifier "ID-Ping*").Count }catch [System.InvalidOperationException]{ Write-Verbose "Ping-IPrange : InvalidOperationException" -Verbose } finally{ Remove-Variable $VarName } #$index = [array]::indexof($IPrange,$ip) if ($HostName) { Write-Progress -Activity "Sending ping to" -Id 1 -status $ip -PercentComplete (($index / $IpTotal) * 100) } else { Write-Progress -Activity "Sending ping to" -Id 1 -status $ip.IPAddressToString -PercentComplete (($index / $IpTotal) * 100) } Write-Progress -Activity "ICMP requests pending" -Id 2 -ParentId 1 -Status ($index - $pending) -PercentComplete (($index - $pending)/$IpTotal * 100) Start-Sleep -Milliseconds $Interval $index++ } Write-Progress -Activity "Done sending ping requests" -Id 1 -Status 'Waiting' -PercentComplete 100 While($pending -lt $IpTotal){ Wait-Event -SourceIdentifier "ID-Ping*" | Out-Null Start-Sleep -Milliseconds 10 $pending = (Get-Event -SourceIdentifier "ID-Ping*").Count Write-Progress -Activity "ICMP requests pending" -Id 2 -ParentId 1 -Status ($IpTotal - $pending) -PercentComplete (($IpTotal - $pending)/$IpTotal * 100) } if($RawOutput){ $Reply = Get-Event -SourceIdentifier "ID-Ping*" | ForEach { If($_.SourceEventArgs.Reply.Status -eq "Success"){ $_.SourceEventArgs.Reply } Unregister-Event $_.SourceIdentifier Remove-Event $_.SourceIdentifier } }else{ $events = Get-Event -SourceIdentifier "ID-Ping*" $Reply = [System.Collections.ArrayList]::new() $i = 0 foreach ($event in $events) { If($event.SourceEventArgs.Reply.Status -eq "Success"){ if ($HostName) { $null = $Reply.Add( [PSCustomObject]@{ "HostName" = $HostName[$i] "IPAddress" = $event.SourceEventArgs.Reply.Address "Bytes" = $event.SourceEventArgs.Reply.Buffer.Length "Ttl" = $event.SourceEventArgs.Reply.Options.Ttl "ResponseTime" = $event.SourceEventArgs.Reply.RoundtripTime } ) } else { $null = $Reply.Add( [PSCustomObject]@{ "IPAddress" = $event.SourceEventArgs.Reply.Address "Bytes" = $event.SourceEventArgs.Reply.Buffer.Length "Ttl" = $event.SourceEventArgs.Reply.Options.Ttl "ResponseTime" = $event.SourceEventArgs.Reply.RoundtripTime } ) } } else{ $addr = ($event.SourceIdentifier -split '_')[1] $ip = ((([System.Net.IPAddress]$addr).IPAddressToString).Split('.')) [Array]::Reverse($ip) $ip = $ip -join '.' if ($HostName) { $null = $Reply.Add( [PSCustomObject]@{ "HostName" = $HostName[$i] "IPAddress" = '0.0.0.0' "Bytes" = -1 "Ttl" = -1 "ResponseTime" = -1 } ) } else { $null = $Reply.Add( [PSCustomObject]@{ "IPAddress" = $ip "Bytes" = -1 "Ttl" = -1 "ResponseTime" = -1 } ) } } Unregister-Event $event.SourceIdentifier Remove-Event $event.SourceIdentifier $i++ } } if($Reply -eq $Null){ Write-Verbose "Ping-IPrange : No ip address responded" -Verbose } return ,$Reply }讨论(0) -
You can ping hosts asynchronously with [System.Net.NetworkInformation.Ping], no need to go crazy with runspaces. Moreover it will ping the host once, so it will be way much faster than test-connection. Below is a sample for a batch of hosts (about 90). I guess it's not a good idea to load 100K at once, probably split it in smaller batches and do one by one.
$hosts = "www.facebook.com,www.twitter.com,www.youtu.be,www.google.com,www.youtube.com,www.instagram.com,www.linkedin.com,www.pinterest.com,www.wordpress.com,www.blogspot.com,www.apple.com,www.adobe.com,www.tumblr.com,www.amazon.com,www.vimeo.com,www.flickr.com,www.microsoft.com,www.yahoo.com,www.godaddy.com,www.qq.com,www.vk.com,www.reddit.com,www.baidu.com,www.nytimes.com,www.buydomains.com,www.wp.com,www.statcounter.com,www.jimdo.com,www.blogger.com,www.github.com,www.weebly.com,www.soundcloud.com,www.myspace.com,www.addthis.com,www.theguardian.com,www.cnn.com,www.stumbleupon.com,www.gravatar.com,www.digg.com,www.addtoany.com,www.creativecommons.org,www.paypal.com,www.yelp.com,www.imdb.com,www.huffingtonpost.com,www.feedburner.com,www.issuu.com,www.wixsite.com,www.wix.com,www.dropbox.com,www.forbes.com,www.amazonaws.com,www.washingtonpost.com,www.bluehost.com,www.etsy.com,www.go.com,www.msn.com,www.wsj.com,www.weibo.com,www.fc2.com,www.eventbrite.com,www.parallels.com,www.ebay.com,www.livejournal.com,www.reuters.com,www.taobao.com,www.typepad.com,www.bloomberg.com,www.elegantthemes.com,www.eepurl.com,www.usatoday.com,www.about.com,www.medium.com,www.macromedia.com,www.xing.com,www.bing.com,www.time.com,www.tripadvisor.com,www.aol.com,www.constantcontact.com,www.latimes.com,www.list-manage.com,www.webs.com,www.opera.com,www.live.com,www.bandcamp.com,www.bbc.com,www.businessinsider.com,www.dailymotion.com,www.cpanel.com,www.disqus.com,www.sina.com.cn,www.spotify.com,www.wired.com,www.googleusercontent.com" $hosts = $hosts -split "," $tasks = @{} foreach ($h in $hosts) { $tasks[$h] = [System.Net.NetworkInformation.Ping]::new().SendPingAsync($h)} Write-Host "Waiting for batch is completed" -NoNewline while($false -in $tasks.Values.IsCompleted) {sleep -Milliseconds 300; Write-Host "." -NoNewline} $result = foreach($h in $hosts) { $r = $tasks[$h].Result [PSCustomObject]@{ host = $h address = $r.Address.IPAddressToString status = if($r.Address.IPAddressToString){$r.Status}else{"Failed"} time = $r.RoundtripTime bytes = $r.Buffer.Count ttl = $r.Options.Ttl } } $result | Format-Table -AutoSize讨论(0)
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