140 lines
6.1 KiB
PowerShell
140 lines
6.1 KiB
PowerShell
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#requires -Version 5.1
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<#
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.SYNOPSIS
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performance-baseline — 启动性能基线（docs/RE/test-cases/performance-baseline.md）
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.DESCRIPTION
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正常启动场景（firstInit="1\n0", AUTOEXEC=ver/exit），按墙上时钟记录
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关键阶段锚点在串口日志中首次出现的时刻，计算阶段时间差：
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t0 QEMU 进程启动（含 OVMF + Limine bootloader）
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[UTSM] boot UTSM 内核入口
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[UTSM] SELFTEST PASS
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UTSM 自检完成（位于 4 stage 共 16 驱动装载之后，
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即"驱动加载完"时刻）
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[DSK] boot DSK 主内核接管
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desktop ready 桌面就绪（login skipped → cmd(AUTOEXEC) → desktop）
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输出 .build_tmp\perf_baseline.json（锚点绝对时刻 + 阶段毫秒数 + 环境信息）。
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本用例只测量展示、不做阈值断言（文档标 P2，QEMU 数值仅作回归参考）。
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多次测量取中位数：默认 3 轮，可用 -Runs 调整。
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退出码：测量完成 0；会话/锚点异常 1。
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#>
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param(
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[switch]$Build,
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[int]$Runs = 3
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)
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$ErrorActionPreference = 'Stop'
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. (Join-Path $PSScriptRoot 'lib\QemuTest.ps1')
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Initialize-QemuTest -Build:$Build
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$result = New-TestCaseResult 'performance-baseline'
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# 阶段锚点定义（顺序即启动顺序）
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$anchorDefs = @(
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@{ Key = 'utsm_boot'; Pattern = '[UTSM] boot' },
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@{ Key = 'utsm_selftest'; Pattern = '[UTSM] SELFTEST PASS' },
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@{ Key = 'dsk_boot'; Pattern = '[DSK] boot' },
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@{ Key = 'desktop_ready'; Pattern = 'desktop ready' }
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)
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# 轮询串口日志，记录每个锚点首次出现的墙上时刻；返回 hashtable 或 $null
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function Measure-BootPhases {
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param([Parameter(Mandatory)]$Session, [int]$TimeoutSeconds = 240)
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$marks = @{}
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foreach ($a in $anchorDefs) { $marks[$a.Key] = $null }
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$deadline = (Get-Date).AddSeconds($TimeoutSeconds)
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$remaining = $anchorDefs.Count
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while ((Get-Date) -lt $deadline -and $remaining -gt 0) {
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$text = Read-QemuLogText $Session.LogPath
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foreach ($a in $anchorDefs) {
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if ($null -eq $marks[$a.Key] -and $text.Contains($a.Pattern)) {
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$marks[$a.Key] = Get-Date
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$remaining--
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}
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}
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if (Test-QemuSessionExited $Session) { break }
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Start-Sleep -Milliseconds 200
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}
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return $marks
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}
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$allRuns = New-Object System.Collections.ArrayList
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try {
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for ($run = 1; $run -le $Runs; $run++) {
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Write-Host "`n--- perf run $run/$Runs (正常启动 → desktop ready) ---"
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Set-DeshabFirstInit -First 1 -DevMode 0
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Set-DeshabAutoexec -Lines @('ver', 'exit')
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$t0 = Get-Date
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$s = Start-QemuSession -Name "perf-run$run" -MonitorPort 45507
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try {
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$marks = Measure-BootPhases -Session $s -TimeoutSeconds 240
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$result.LogPath = $s.LogPath
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} finally {
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Stop-QemuSession $s
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}
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if ($null -eq $marks['desktop_ready']) {
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Add-TestCheck $result "run${run}: 锚点采集完整" 'FAIL' 'desktop ready not observed within timeout'
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continue
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}
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Add-TestCheck $result "run${run}: 锚点采集完整" 'PASS'
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$ms = [ordered]@{
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ovmf_bootloader_ms = [int]($marks['utsm_boot'] - $t0).TotalMilliseconds
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utsm_drivers_ms = [int]($marks['utsm_selftest'] - $marks['utsm_boot']).TotalMilliseconds
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selftest_to_dsk_ms = [int]($marks['dsk_boot'] - $marks['utsm_selftest']).TotalMilliseconds
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dsk_to_desktop_ms = [int]($marks['desktop_ready'] - $marks['dsk_boot']).TotalMilliseconds
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total_boot_ms = [int]($marks['desktop_ready'] - $t0).TotalMilliseconds
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}
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[void]$allRuns.Add([pscustomobject]@{
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run = $run
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started_at = $t0.ToString('yyyy-MM-dd HH:mm:ss')
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metrics = $ms
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})
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Write-Host (" ovmf={0}ms utsm+drivers={1}ms dsk_load={2}ms dsk->desktop={3}ms total={4}ms" -f `
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$ms.ovmf_bootloader_ms, $ms.utsm_drivers_ms, $ms.selftest_to_dsk_ms, $ms.dsk_to_desktop_ms, $ms.total_boot_ms)
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}
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} finally {
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Restore-DeshabScenario
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}
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# ---- 中位数汇总 + JSON 输出 ----
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if ($allRuns.Count -gt 0) {
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$median = [ordered]@{}
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foreach ($k in @('ovmf_bootloader_ms', 'utsm_drivers_ms', 'selftest_to_dsk_ms', 'dsk_to_desktop_ms', 'total_boot_ms')) {
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$vals = @($allRuns | ForEach-Object { [int]$_.metrics[$k] } | Sort-Object)
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$median[$k] = $vals[[int]($vals.Count / 2)]
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}
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$out = [ordered]@{
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generated_at = (Get-Date).ToString('yyyy-MM-dd HH:mm:ss')
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method = 'host wall-clock polling of serial log anchors (200ms poll, +/-200ms 精度)'
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environment = [ordered]@{
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accel = 'whpx'
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cpu = 'qemu64,-vmx'
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machine = 'q35'
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memory = '2G'
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scenario = 'firstInit=1 dev_mode=0 AUTOEXEC=ver,exit -> desktop ready'
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snapshot = $true
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}
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median_ms = $median
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runs = $allRuns
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}
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$jsonPath = Join-Path $script:BuildTmp 'perf_baseline.json'
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($out | ConvertTo-Json -Depth 6) | Out-File -Encoding utf8 $jsonPath
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Add-TestNote $result "基线 JSON: $jsonPath"
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Add-TestCheck $result ("P1: UTSM 启动+驱动装载 (utsm_boot→SELFTEST) = {0} ms (目标<500ms QEMU, 仅展示)" -f $median.utsm_drivers_ms) 'PASS'
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Add-TestCheck $result ("DSK 加载 (SELFTEST→[DSK] boot) = {0} ms" -f $median.selftest_to_dsk_ms) 'PASS'
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Add-TestCheck $result ("DSK→desktop ready = {0} ms" -f $median.dsk_to_desktop_ms) 'PASS'
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Add-TestCheck $result ("总启动 (QEMU 启动→desktop ready) = {0} ms" -f $median.total_boot_ms) 'PASS'
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Add-TestNote $result '本用例不做阈值断言；QEMU WHPX 数值仅作回归参考（文档：QEMU≠真机，固定加速方案）'
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Add-TestNote $result 'P2/P3/P6（单 ELF 加载计时）、P4 ping RTT、P7 桌面帧率、P8-P11（PE/VMM/Linux）需内核 TSC 打点日志，当前串口无对应锚点，保持 PENDING（见建议锚点清单）'
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}
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Write-TestCaseResult $result
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if ($result.Status -eq 'FAIL') { exit 1 } else { exit 0 }
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