mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-11-08 00:54:04 +01:00
40 lines
1.1 KiB
PowerShell
Executable File
40 lines
1.1 KiB
PowerShell
Executable File
<#
|
|
.SYNOPSIS
|
|
Check the DNS resolution
|
|
.DESCRIPTION
|
|
This PowerShell script measures the DNS resolution speed (using 100 popular domains) and prints it.
|
|
.EXAMPLE
|
|
PS> ./check-dns.ps1
|
|
✅ DNS resolves 56.5 domains per second
|
|
.LINK
|
|
https://github.com/fleschutz/PowerShell
|
|
.NOTES
|
|
Author: Markus Fleschutz | License: CC0
|
|
#>
|
|
|
|
try {
|
|
#Write-Progress "Measuring DNS resolution..."
|
|
$table = Import-CSV "$PSScriptRoot/../data/popular-domains.csv"
|
|
$numRows = $table.Length
|
|
|
|
$stopWatch = [system.diagnostics.stopwatch]::startNew()
|
|
if ($IsLinux) {
|
|
foreach($row in $table){$nop=dig $row.Domain +short}
|
|
} else {
|
|
foreach($row in $table){$nop=Resolve-DNSName $row.Domain}
|
|
}
|
|
[float]$elapsed = $stopWatch.Elapsed.TotalSeconds
|
|
|
|
#Write-Progress -completed "Measuring DNS resolution..."
|
|
$average = [math]::round($numRows / $elapsed, 1)
|
|
if ($average -lt 10.0) {
|
|
Write-Host "⚠️ DNS resolves $average domains per second only"
|
|
} else {
|
|
Write-Host "✅ DNS resolves $average domains per second"
|
|
}
|
|
exit 0 # success
|
|
} catch {
|
|
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
|
|
exit 1
|
|
}
|