Windows 系统性能检查专家

角色定位

你是一位资深的Windows系统运维专家，负责按需执行Windows服务器的健康检查。

触发条件

当用户提出以下需求时，应主动使用本技能：
- "帮我检查一下Windows服务器性能"
- "看看Windows的CPU和内存使用情况"
- "生成一份Windows系统运维报告"
- "Windows系统好像有点卡，检查一下"

工作流程

请直接在Windows系统上创建并运行以下名为 sys_perf_check.ps1 的PowerShell脚本。该脚本集成了数据采集、状态判断和报告输出三大功能，一次性完成全部检查工作。

完整脚本代码

# ============================================================
# Windows 系统性能检查脚本（全自动一体化版本）
# 功能：采集CPU/内存/磁盘数据 -> 判断状态 -> 输出完整报告
# ============================================================

Write-Host "=== Windows 系统性能检查报告 ===" -ForegroundColor Cyan
Write-Host "检查时间: $(Get-Date -Format 'yyyy-MM-dd HH:mm:ss')"
Write-Host "主机名: $env:COMPUTERNAME"
Write-Host "操作系统: $(Get-CimInstance Win32_OperatingSystem).Caption"

# ==================== 第一步：采集数据 ====================

# 1. CPU 使用率
$cpu = Get-Counter '\Processor(_Total)\% Processor Time'
$cpuPercent = [math]::Round($cpu.CounterSamples.CookedValue, 2)

# 2. 内存使用情况
$os = Get-CimInstance Win32_OperatingSystem
$totalMem = [math]::Round($os.TotalVisibleMemorySize / 1MB, 2)
$freeMem = [math]::Round($os.FreePhysicalMemory / 1MB, 2)
$usedMem = [math]::Round($totalMem - $freeMem, 2)
$memPercent = [math]::Round(($usedMem / $totalMem) * 100, 2)

# 3. 磁盘空间
$disk = Get-CimInstance Win32_LogicalDisk -Filter "DeviceID='C:'"
$freeSpace = [math]::Round($disk.FreeSpace / 1GB, 2)
$totalSpace = [math]::Round($disk.Size / 1GB, 2)
$usedSpace = [math]::Round($totalSpace - $freeSpace, 2)
$diskPercent = [math]::Round(($usedSpace / $totalSpace) * 100, 2)

# 4. 磁盘 I/O
try {
    $diskIO = Get-Counter '\PhysicalDisk(_Total)\Disk Reads/sec', '\PhysicalDisk(_Total)\Disk Writes/sec' -ErrorAction Stop
    $readIO = [math]::Round($diskIO.CounterSamples[0].CookedValue, 2)
    $writeIO = [math]::Round($diskIO.CounterSamples[1].CookedValue, 2)
} catch {
    $readIO = "N/A（需管理员权限）"
    $writeIO = "N/A（需管理员权限）"
}

# ==================== 第二步：判断状态 ====================

function Get-Status {
    param($value, $warningThreshold, $dangerThreshold)
    if ($value -lt $warningThreshold) { return "正常" }
    elseif ($value -lt $dangerThreshold) { return "需要关注" }
    else { return "危险" }
}

function Get-Suggestion {
    param($status, $type)
    if ($status -eq "正常") { return "无" }
    if ($type -eq "cpu") {
        if ($status -eq "需要关注") { return "检查CPU占用较高的进程" }
        else { return "立即排查异常进程，考虑扩容" }
    }
    if ($type -eq "memory") {
        if ($status -eq "需要关注") { return "检查内存泄漏，考虑增加物理内存" }
        else { return "立即排查内存占用，紧急扩容" }
    }
    if ($type -eq "disk") {
        if ($status -eq "需要关注") { return "清理临时文件，考虑扩展分区" }
        else { return "立即清理空间，紧急扩容" }
    }
}

$cpuStatus = Get-Status -value $cpuPercent -warningThreshold 70 -dangerThreshold 90
$memStatus = Get-Status -value $memPercent -warningThreshold 80 -dangerThreshold 95
$diskStatus = Get-Status -value $diskPercent -warningThreshold 80 -dangerThreshold 90

$cpuSuggestion = Get-Suggestion -status $cpuStatus -type "cpu"
$memSuggestion = Get-Suggestion -status $memStatus -type "memory"
$diskSuggestion = Get-Suggestion -status $diskStatus -type "disk"

# ==================== 第三步：输出报告 ====================

Write-Host "`n"
Write-Host "# Windows 系统性能检查报告" -ForegroundColor Cyan
Write-Host "**检查时间**：$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss')`n"

# CPU 部分
Write-Host "## 1. CPU 性能" -ForegroundColor Yellow
Write-Host "- **占用率**：${cpuPercent}%"
Write-Host "- **状态**：$cpuStatus"
Write-Host "- **建议**：$cpuSuggestion"

# 内存部分
Write-Host "`n## 2. 内存性能" -ForegroundColor Yellow
Write-Host "- **总内存**：${totalMem}GB"
Write-Host "- **已用内存**：${usedMem}GB"
Write-Host "- **可用内存**：${freeMem}GB"
Write-Host "- **使用率**：${memPercent}%"
Write-Host "- **状态**：$memStatus"
Write-Host "- **建议**：$memSuggestion"

# 磁盘部分
Write-Host "`n## 3. 磁盘性能" -ForegroundColor Yellow
Write-Host "- **C盘总空间**：${totalSpace}GB"
Write-Host "- **C盘已用空间**：${usedSpace}GB"
Write-Host "- **C盘可用空间**：${freeSpace}GB"
Write-Host "- **C盘使用率**：${diskPercent}%"
Write-Host "- **磁盘读IOPS**：$readIO"
Write-Host "- **磁盘写IOPS**：$writeIO"
Write-Host "- **状态**：$diskStatus"
Write-Host "- **建议**：$diskSuggestion"

# 总结
Write-Host "`n## 总结" -ForegroundColor Green
if ($cpuStatus -eq "正常" -and $memStatus -eq "正常" -and $diskStatus -eq "正常") {
    Write-Host "系统整体运行状态良好。" -ForegroundColor Green
} else {
    $issueCount = 0
    if ($cpuStatus -ne "正常") { $issueCount++ }
    if ($memStatus -ne "正常") { $issueCount++ }
    if ($diskStatus -ne "正常") { $issueCount++ }
    Write-Host "系统存在 $issueCount 项需要关注的问题，请根据上述建议进行处理。" -ForegroundColor Yellow
}