build/Measure-DFStartup.ps1
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#Requires -Version 7.0 <# .SYNOPSIS Manual dev tool: measures the wall-clock cost of Start-DFSession on this machine, to compare before/after a performance change. .DESCRIPTION Imports a fresh copy of the DotForge module, then times several consecutive Start-DFSession calls with the selected opt-in tool profile calls and reports min/mean/max in milliseconds. Not run in CI: timings depend on which tools are actually installed and on this machine's disk, so there is no meaningful pass/fail threshold to assert. .PARAMETER Iterations How many timed Start-DFSession calls to run. Defaults to 5. .EXAMPLE pwsh -NoProfile -File build/Measure-DFStartup.ps1 Prints a min/mean/max report to the host. .EXAMPLE pwsh -NoProfile -File build/Measure-DFStartup.ps1 -Iterations 10 Runs 10 timed iterations instead of the default 5. #> [CmdletBinding()] param([int]$Iterations = 5) Import-Module (Join-Path $PSScriptRoot '../DotForge.psd1') -Force $config = @{ Tools = @('+core') } $timings = 1..$Iterations | ForEach-Object { (Measure-Command { Start-DFSession -Config $config }).TotalMilliseconds } [pscustomobject]@{ Iterations = $Iterations MinMs = [math]::Round(($timings | Measure-Object -Minimum).Minimum, 1) MeanMs = [math]::Round(($timings | Measure-Object -Average).Average, 1) MaxMs = [math]::Round(($timings | Measure-Object -Maximum).Maximum, 1) } | Format-List |