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October 27, 2022 12:40
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PowerShell Hashtable Performance Tests
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<# | |
Hashtable Access Performance Test | |
Settings: | |
$maxentries = Number of entries to put into the hashtable | |
$iterations = Number of access test per method | |
#> | |
$maxentries = 100000 | |
$iterations = 5000 | |
$meineHashtable = @{} | |
for($i = 1; $i -le $maxentries; $i++) { | |
$meineHashtable.Add("ABC$i", "Hier ein Wert: $i") | |
} | |
$dot=for($i=0; $i -lt $iterations; $i++) { | |
$obj = "ABC$(Get-Random -Minimum 1 -Maximum $maxentries)" | |
Measure-Command { | |
$meineHashtable.$obj | |
} | |
} | |
$eck=for($i=0; $i -lt $iterations; $i++) { | |
$obj = "ABC$(Get-Random -Minimum 1 -Maximum $maxentries)" | |
Measure-Command { | |
$meineHashtable[$obj] | |
} | |
} | |
Write-Output "Variante mit [eckigen] Klammern:" | |
$eck.TotalMilliseconds | Measure-Object -Average -Maximum -Minimum | Format-Table Average,Maximum,Minimum | |
Write-Output "Variante mit .Punkt:" | |
$dot.TotalMilliseconds | Measure-Object -Average -Maximum -Minimum | Format-Table Average,Maximum,Minimum |
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<# | |
Hashtable Add Performance Test | |
Settings: | |
$maxentries = Number of entries to put into the hashtable | |
$iterations = Number of tests per method | |
#> | |
$maxentries = 20000 | |
# weil .Key/.Punkt sehr langsam ist, teste ich nicht so oft ;-) | |
$iterations = 10 | |
$dotadd = for($test = 0; $test -le $iterations; $test++) { | |
$meineHashtable.Clear() | |
$meineHashtable = @{} | |
Measure-Command { | |
for($i = 1; $i -le $maxentries; $i++) { | |
$meineHashtable.Add("ABC$i", "Hier ein Wert: $i") | |
} | |
} | |
} | |
$dot = for($test = 0; $test -le $iterations; $test++) { | |
$meineHashtable.Clear() | |
$meineHashtable = @{} | |
Measure-Command { | |
for($i = 1; $i -le $maxentries; $i++) { | |
$meineHashtable."ABC$i" = "Hier ein Wert: $i" | |
} | |
} | |
} | |
$eck = for($test = 0; $test -le $iterations; $test++) { | |
$meineHashtable.Clear() | |
$meineHashtable = @{} | |
Measure-Command { | |
for($i = 1; $i -le $maxentries; $i++) { | |
$meineHashtable["ABC$i"] = "Hier ein Wert: $i" | |
} | |
} | |
} | |
Write-Output "Variante mit [eckigen] Klammern:" | |
$eck.TotalMilliseconds | Measure-Object -Average -Maximum -Minimum | Format-Table Average,Maximum,Minimum | |
Write-Output "Variante mit .Punkt:" | |
$dot.TotalMilliseconds | Measure-Object -Average -Maximum -Minimum | Format-Table Average,Maximum,Minimum | |
Write-Output "Variante mit .Add():" | |
$dotadd.TotalMilliseconds | Measure-Object -Average -Maximum -Minimum | Format-Table Average,Maximum,Minimum |
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