Add laptop efficiency testing script

rust_perf_battery.ps1

@@ -0,0 +1,310 @@
+<#
+.SYNOPSIS
+    Continuously runs `cargo clean` followed by `cargo build` in a loop.
+    Logs comprehensive performance and battery statistics per iteration.
+
+.DESCRIPTION
+    - Runs a self-test before starting. If self-test fails, prints error and exits.
+    - On start, prints initial line with date/time, battery, mode, etc.
+    - For each iteration (called a "run"):
+        * Executes cargo clean and cargo build
+        * Measures times and increments counters
+        * Sleeps a configured interval
+        * Tracks stats per power-mode combination:
+            - Total mode time
+            - Total build/clean times
+            - Build count
+        * Calculates ratios:
+            - Builds per % battery drop
+            - Build time per % battery drop
+            - Wall time per % battery drop
+        * Prints a multi-line summary for each iteration:
+            1) Overall line (date/time, run #, mode, battery, total times)
+            2) Indented line with sleep info and last build output
+            3) One indented line per mode with detailed stats and ratios
+    - On command failure, prints the error output and stops.
+
+    Time formats:
+      - Display time: "yyyy-MM-dd HH:mm:sss" (with 's' appended at the end)
+      - File names: "yyyy-MM-dd_HH-mm-ss"
+      - Time spans: "HH:MM:SSs" for total times
+      - Averages and ratios in seconds (with one decimal place if needed).
+
+    "Other" time = total script runtime - (build+clean+sleep).
+
+.NOTES
+    Requires PowerShell 5.1+ and `cargo` in PATH.
+    Assumes the current directory has a Cargo project (Cargo.toml).
+
+.EXAMPLE
+    .\rust_perf_battery.ps1
+#>
+
+param()
+
+Set-StrictMode -Version Latest
+$ErrorActionPreference = 'Stop'
+
+# Configuration
+$PauseBetweenRuns = 10 # seconds to sleep between each iteration
+
+# Formats
+$logTimeFormat = "yyyy-MM-dd_HH-mm-ss"    # for file names
+$displayTimeFormat = "yyyy-MM-dd HH:mm:ss" # for printed lines
+[DateTime]$GlobalScriptStart = Get-Date
+[string]$ScriptStartTime = (Get-Date -Format $logTimeFormat)
+[string]$FullLogPath = Join-Path (Get-Location) ("rust_perf_battery_full_$ScriptStartTime.log")
+[string]$SummaryLogPath = Join-Path (Get-Location) ("rust_perf_battery_summary_$ScriptStartTime.log")
+
+# Track global stats
+$CompileCount = 0
+$StopLoop = $false
+[TimeSpan]$TotalBuildTime = [TimeSpan]::Zero
+[TimeSpan]$TotalCleanTime = [TimeSpan]::Zero
+[TimeSpan]$TotalSleepTime = [TimeSpan]::Zero
+
+# Mode stats: Dictionary<string,PSObject>
+# Each value: { Mode, TotalModeTime, TotalBuildTime, TotalCleanTime, BuildCount }
+$ModeStats = [System.Collections.Generic.Dictionary[string, object]]::new()
+
+function Ensure-ModeStats($mode) {
+    if (-not $ModeStats.ContainsKey($mode)) {
+        $ModeStats[$mode] = [PSCustomObject]@{
+            Mode = $mode
+            TotalModeTime = [TimeSpan]::Zero
+            TotalBuildTime = [TimeSpan]::Zero
+            TotalCleanTime = [TimeSpan]::Zero
+            BuildCount = 0
+        }
+    }
+}
+
+function Get-PowerSchemeName {
+    $output = powercfg /getactivescheme 2>$null
+    if ($LASTEXITCODE -ne 0 -or [string]::IsNullOrWhiteSpace($output)) {
+        throw "Unable to retrieve power scheme name."
+    }
+
+    if ($output -match '\((?<SchemeName>[^)]+)\)') {
+        return ($Matches['SchemeName'].Trim())
+    } else {
+        throw "No scheme name found in powercfg output."
+    }
+}
+
+function Get-BatteryStatus {
+    $batt = Get-CimInstance Win32_Battery -ErrorAction SilentlyContinue
+    if (-not $batt) {
+        return [PSCustomObject]@{
+            HasBattery     = $false
+            BatteryPercent = 100
+            OnAC           = $true
+            BatteryStatus  = "NoBattery"
+        }
+    }
+
+    $statusCode = [int]$batt.BatteryStatus
+    $percent = [int]$batt.EstimatedChargeRemaining
+    $onAC = $true
+    if ($statusCode -eq 1 -or $statusCode -eq 4 -or $statusCode -eq 5) {
+        $onAC = $false
+    }
+
+    return [PSCustomObject]@{
+        HasBattery     = $true
+        BatteryPercent = $percent
+        OnAC           = $onAC
+        BatteryStatus  = $statusCode
+    }
+}
+
+function Get-CurrentEnergyMode {
+    $schemeName = Get-PowerSchemeName
+    $battery = Get-BatteryStatus
+    $powerSource = if ($battery.OnAC) { "ac" } else { "battery" }
+    $modeName = ($schemeName -replace '\s+', '-').ToLower()
+    return "$powerSource-$modeName"
+}
+
+function Format-ShortTime($ts) {
+    # Format as HH:MM:SSs
+    "{0:00}:{1:00}:{2:00}s" -f [int]$ts.TotalHours, $ts.Minutes, $ts.Seconds
+}
+
+function Self-Test {
+    try {
+        $mode = Get-CurrentEnergyMode
+        # Just test we can add to mode stats without error
+        Ensure-ModeStats($mode)
+        $ModeStats[$mode].TotalModeTime += (New-TimeSpan -Seconds 5)
+    } catch {
+        Write-Host "Self-test failed: $($_.Exception.Message)"
+        exit 1
+    }
+}
+
+function Run-CargoClean {
+    $start = Get-Date
+    $output = & cargo clean 2>&1
+    $exit = $LASTEXITCODE
+    $elapsed = (Get-Date) - $start
+    return [PSCustomObject]@{
+        Output = $output
+        Success = ($exit -eq 0)
+        Elapsed = $elapsed
+    }
+}
+
+function Run-CargoBuild {
+    $start = Get-Date
+    $output = & cargo build 2>&1
+    $exit = $LASTEXITCODE
+    $elapsed = (Get-Date) - $start
+    return [PSCustomObject]@{
+        Output = $output
+        Success = ($exit -eq 0)
+        Elapsed = $elapsed
+    }
+}
+
+function Write-Logs {
+    param(
+        [string]$FullOutput,
+        [string]$SummaryLine
+    )
+    Add-Content -Path $FullLogPath -Value $FullOutput
+    Add-Content -Path $FullLogPath -Value $SummaryLine
+    Add-Content -Path $SummaryLogPath -Value $SummaryLine
+}
+
+# Run self-test
+Self-Test
+
+# Clear mode stats since we tested adding time
+$ModeStats.Clear()
+
+# Now that functions are defined, we can read initial battery
+$InitialBatteryPercent = (Get-BatteryStatus).BatteryPercent
+
+# Print initial lines
+$battery = Get-BatteryStatus
+$initMode = Get-CurrentEnergyMode
+$currentTimestamp = (Get-Date -Format $displayTimeFormat) + "s"
+
+$initialLine = "$currentTimestamp battery=$($battery.BatteryPercent)% mode=$initMode"
+Write-Host $initialLine
+
+$logLine = "Logs: $(Split-Path $FullLogPath -Leaf), $(Split-Path $SummaryLogPath -Leaf)"
+Write-Host $logLine
+
+while (-not $StopLoop) {
+    $iterationStart = Get-Date
+    $CurrentEnergyMode = Get-CurrentEnergyMode
+
+    # Clean
+    $cleanResult = Run-CargoClean
+    if (-not $cleanResult.Success) {
+        Write-Host "cargo clean failed, output:"
+        $cleanResult.Output | Write-Host
+        $StopLoop = $true
+        break
+    }
+
+    # Build
+    $buildResult = Run-CargoBuild
+    if (-not $buildResult.Success) {
+        Write-Host "cargo build failed, output:"
+        $buildResult.Output | Write-Host
+        $StopLoop = $true
+        break
+    }
+
+    $iterationElapsed = (Get-Date) - $iterationStart
+
+    # Update global stats
+    $TotalCleanTime += $cleanResult.Elapsed
+    $TotalBuildTime += $buildResult.Elapsed
+
+    # Update mode stats
+    Ensure-ModeStats($CurrentEnergyMode)
+    $ModeStats[$CurrentEnergyMode].TotalModeTime += $iterationElapsed
+    $ModeStats[$CurrentEnergyMode].TotalBuildTime += $buildResult.Elapsed
+    $ModeStats[$CurrentEnergyMode].TotalCleanTime += $cleanResult.Elapsed
+    $ModeStats[$CurrentEnergyMode].BuildCount += 1
+
+    $CompileCount++
+    $batt = Get-BatteryStatus
+
+    # Extract last build line safely
+    $buildLineObj = $buildResult.Output | Select-Object -Last 1
+    $lastBuildLine = if ($buildLineObj) { [string]$buildLineObj } else { "" }
+    $lastBuildLine = $lastBuildLine.Trim()
+
+    # Sleep between runs
+    $sleepStart = Get-Date
+    Start-Sleep -Seconds $PauseBetweenRuns
+    $sleepElapsed = (Get-Date) - $sleepStart
+    $TotalSleepTime += $sleepElapsed
+
+    # Compute metrics
+    $totalElapsed = (Get-Date) - $GlobalScriptStart
+    $otherTime = $totalElapsed - ($TotalBuildTime + $TotalCleanTime + $TotalSleepTime)
+
+    $totalBuildStr = Format-ShortTime $TotalBuildTime
+    $totalCleanStr = Format-ShortTime $TotalCleanTime
+    $totalSleepStr = Format-ShortTime $TotalSleepTime
+    $otherTimeStr = Format-ShortTime $otherTime
+
+    $batteryDrop = $InitialBatteryPercent - $batt.BatteryPercent
+    $batteryDropFloat = [double]$batteryDrop
+    $currentTimestamp = (Get-Date -Format $displayTimeFormat) + "s"
+    $runCountStr = "{0:000}" -f $CompileCount
+
+    # Overall line
+    $overallLine = "$currentTimestamp, run $runCountStr, $CurrentEnergyMode, battery $($batt.BatteryPercent)%, total build $totalBuildStr, clean $totalCleanStr, sleep $totalSleepStr"
+    Write-Host $overallLine
+
+    # Second line
+    $secondLine = "   Sleeping ${PauseBetweenRuns}s between builds. $lastBuildLine"
+    Write-Host $secondLine
+
+    # Mode lines with ratios
+    foreach ($modeKey in $ModeStats.Keys) {
+        $m = $ModeStats[$modeKey]
+        # avg build/clean time
+        $avgBuild = "N/A"
+        $avgClean = "N/A"
+        if ($m.BuildCount -gt 0) {
+            $avgBuildSec = $m.TotalBuildTime.TotalSeconds / $m.BuildCount
+            $avgBuild = ("{0:F1}s" -f $avgBuildSec)
+            $avgCleanSec = $m.TotalCleanTime.TotalSeconds / $m.BuildCount
+            $avgClean = ("{0:F1}s" -f $avgCleanSec)
+        }
+
+        $buildsPerDrop = "N/A"
+        $buildTimePerDrop = "N/A"
+        $wallPerDrop = "N/A"
+        if ($batteryDropFloat -gt 0) {
+            $buildsPerDropVal = $m.BuildCount / $batteryDropFloat
+            $buildsPerDrop = ("{0:F2}" -f $buildsPerDropVal)
+
+            $buildTimePerDropVal = $m.TotalBuildTime.TotalSeconds / $batteryDropFloat
+            $buildTimePerDrop = ("{0:F0}s" -f $buildTimePerDropVal)
+
+            $wallPerDropVal = $m.TotalModeTime.TotalSeconds / $batteryDropFloat
+            $wallPerDrop = ("{0:F0}s" -f $wallPerDropVal)
+        }
+
+        $modeLine = "   On $($m.Mode) for $(Format-ShortTime $m.TotalModeTime), avg build $avgBuild, avg clean $avgClean, builds per % drop: $buildsPerDrop, build time per %: $buildTimePerDrop, wall per %: $wallPerDrop"
+        Write-Host $modeLine
+    }
+
+    $fullOutput = "=== Iteration $CompileCount ===`r`n" +
+                  "--- Cargo clean output ---`r`n" + ($cleanResult.Output -join "`r`n") + "`r`n" +
+                  "--- Cargo build output ---`r`n" + ($buildResult.Output -join "`r`n") + "`r`n"
+
+    # For logs, just write the overall line as summary
+    Write-Logs -FullOutput $fullOutput -SummaryLine $overallLine
+}
+
+Write-Host "Script ended."