PowerShell 7zip timing

Timing7zip.ps1

$sizeInBytes = 859236677
function Dump-Execution(
    [string] $fileName,
    [int] $elapsed,
    [int] $referenceTime,
    [int] $referenceSize,
    [string] $description
)
{
    $compressedFile = Get-Item $fileName
    $compressedSize = $compressedFile.Length
    $reductionInSize = $compressedSize * 100 / $sizeInBytes
    $increaseInCompressionTime = $elapsed * 100 / $referenceTime
    $relativeCompressionSize = $compressedSize * 100 / $referenceSize
    $dumpString = "$description-> $elapsed ms file size $compressedSize global reduction of {0:00.0}% relative increase in compression time {1:00.0}% vs relative reduction {2:00.0}%" -f $reductionInSize, $increaseInCompressionTime, $relativeCompressionSize
    Write-Host $dumpString
}

$sourceDir = "C:\temp\testrelease\fullfw\*"
$destinationDir = "C:\temp\testrelease\out"

Set-Alias sz "C:\Program Files\7-Zip\7z.exe"
Set-Alias sza "C:\Program Files\7-Zip\7za\7za.exe"
Set-Alias sza920 "C:\Program Files\7-Zip\7za920\7za.exe"
if (Test-Path $destinationDir) 
{
    Remove-Item $destinationDir -Recurse 
}

$filePrefix = ""

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=1 "$destinationDir\test_$filePrefix_1.7z" $sourceDir > $null
$reference = $sw.ElapsedMilliseconds
$referenceSize = (Get-Item "$destinationDir\test_$filePrefix_1.7z").Length
Dump-Execution -fileName "$destinationDir\test_$filePrefix_1.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=1" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=3 "$destinationDir\test_$filePrefix_3.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_3.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=3" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=5 "$destinationDir\test_$filePrefix_5.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_5.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=5" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=7 "$destinationDir\test_$filePrefix_7.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_7.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=7" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=9 "$destinationDir\test_$filePrefix_9.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_9.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=9" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=1 -mqs=on "$destinationDir\test_$filePrefix_1.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_1.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=1 -mqs=on" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=3 -mqs=on "$destinationDir\test_$filePrefix_3.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_3.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=3 -mqs=on" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=5 -mqs=on "$destinationDir\test_$filePrefix_5.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_5.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=5 -mqs=on" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=7 -mqs=on "$destinationDir\test_$filePrefix_7.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_7.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=7 -mqs=on" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sz a -mx=9 -mqs=on "$destinationDir\test_$filePrefix_9.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test_$filePrefix_9.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=9 -mqs=on" -referenceTime $reference -referenceSize $referenceSize


# Now compress with old 7za version 9.20

$sw = [Diagnostics.Stopwatch]::StartNew()
sza920 a -mx=1 "$destinationDir\test7za920_1.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test7za920_1.7z" -elapsed $sw.ElapsedMilliseconds -description "7za920.exe mx=1" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sza920 a -mx=3 "$destinationDir\test7za920_3.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test7za920_3.7z" -elapsed $sw.ElapsedMilliseconds -description "7za920.exe mx=3" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sza920 a -mx=5 "$destinationDir\test7za920_5.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test7za920_5.7z" -elapsed $sw.ElapsedMilliseconds -description "7za920.exe mx=5" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sza920 a -mx=7 "$destinationDir\test7za920_7.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test7za920_7.7z" -elapsed $sw.ElapsedMilliseconds -description "7za920.exe mx=7" -referenceTime $reference -referenceSize $referenceSize

$sw = [Diagnostics.Stopwatch]::StartNew()
sza920 a -mx=9 "$destinationDir\test7za920_9.7z" $sourceDir > $null
Dump-Execution -fileName "$destinationDir\test7za920_9.7z" -elapsed $sw.ElapsedMilliseconds -description "7za920.exe mx=9" -referenceTime $reference -referenceSize $referenceSize

# sz a -mx=1 -mm=LZMA "$destinationDir\test1lzma.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test1lzma.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=1 LZMA" -referenceTime $reference -referenceSize $referenceSize
# sz a -mx=3 -mm=LZMA "$destinationDir\test3lzma.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test3lzma.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=3 LZMA" -referenceTime $reference -referenceSize $referenceSize
# sz a -mx=5 -mm=LZMA "$destinationDir\test5lzma.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test5lzma.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=5 LZMA" -referenceTime $reference -referenceSize $referenceSize
# sz a -mx=7 -mm=LZMA "$destinationDir\test7lzma.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test7lzma.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=7 LZMA" -referenceTime $reference -referenceSize $referenceSize
# sz a -mx=9 -mm=LZMA "$destinationDir\test9lzma.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test9lzma.7z" -elapsed $sw.ElapsedMilliseconds -description "mx=9 LZMA" -referenceTime $reference -referenceSize $referenceSize



# $sw = [Diagnostics.Stopwatch]::StartNew()
# sza a -mx=1 "$destinationDir\test7za1.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test7za1.7z" -elapsed $sw.ElapsedMilliseconds -description "7za.exe mx=1" -referenceTime $reference -referenceSize $referenceSize
# 
# $sw = [Diagnostics.Stopwatch]::StartNew()
# sza a -mx=3 "$destinationDir\test7za3.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test7za3.7z" -elapsed $sw.ElapsedMilliseconds -description "7za.exe mx=3" -referenceTime $reference -referenceSize $referenceSize
# 
# $sw = [Diagnostics.Stopwatch]::StartNew()
# sza a -mx=5 "$destinationDir\test7za5.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test7za5.7z" -elapsed $sw.ElapsedMilliseconds -description "7za.exe mx=5" -referenceTime $reference -referenceSize $referenceSize
# 
# $sw = [Diagnostics.Stopwatch]::StartNew()
# sza a -mx=7 "$destinationDir\test7za7.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test7za7.7z" -elapsed $sw.ElapsedMilliseconds -description "7za.exe mx=7" -referenceTime $reference -referenceSize $referenceSize
# 
# $sw = [Diagnostics.Stopwatch]::StartNew()
# sza a -mx=9 "$destinationDir\test7za9.7z" $sourceDir > $null
# Dump-Execution -fileName "$destinationDir\test7za9.7z" -elapsed $sw.ElapsedMilliseconds -description "7za.exe mx=9" -referenceTime $reference -referenceSize $referenceSize