我写了一个小的诊断脚本,保存在我的$profile
里。通过获取CPU名称,我发现该命令需要约4秒钟 (Get-WmiObject -Class Win32_Processor).Name
。因此,我想尝试使用PowerShell Jobs,虽然我认为它们对于长时间运行的后台作业非常好,但如果您只想在后台快速获取少量信息,则初始化时间有些麻烦(每个作业大约2-3秒),因此我打算使用Start-Process将值转储到临时文件中,而我的脚本的其余部分则继续运行。我认为我做得对,但是如果您运行此函数3或4次,您会注意到CPU名称未填充。
• 像这样使用Start-Process是否最佳? 还是有更快的并行启动小型后台作业的方法? 我知道有一种.NET方法可以做到这一点(但从我看到的内容来看,似乎非常复杂)?
• 您是否知道我的“等待文件被创建并且在访问之前为非零”经常失败的原因?
function sys {
$System = get-wmiobject -class "Win32_ComputerSystem"
$Mem = [math]::Ceiling($System.TotalPhysicalMemory / 1024 / 1024 / 1024)
$wmi = gwmi -class Win32_OperatingSystem -computer "."
$LBTime = $wmi.ConvertToDateTime($wmi.Lastbootuptime)
[TimeSpan]$uptime = New-TimeSpan $LBTime $(get-date)
$s = "" ; if ($uptime.Days -ne 1) {$s = "s"}
$uptime_string = "$($uptime.days) day$s $($uptime.hours) hr $($uptime.minutes) min $($uptime.seconds) sec"
$temp_cpu = "$($env:TEMP)\ps_temp_cpu.txt"
$temp_cpu_cores = "$($env:TEMP)\ps_temp_cpu_cores.txt"
$temp_cpu_logical = "$($env:TEMP)\ps_temp_cpu_logical.txt"
rm -force $temp_cpu -EA silent ; rm -force $temp_cpu_cores -EA silent ; rm -force $temp_cpu_logical -EA silent
Start-Process -NoNewWindow -FilePath "powershell.exe" -ArgumentList "-NoLogo -NoProfile (Get-WmiObject -Class Win32_Processor).Name > $temp_cpu"
Start-Process -NoNewWindow -FilePath "powershell.exe" -ArgumentList "-NoLogo -NoProfile (Get-WmiObject -Class Win32_Processor).NumberOfCores > $temp_cpu_cores"
Start-Process -NoNewWindow -FilePath "powershell.exe" -ArgumentList "-NoLogo -NoProfile (Get-WmiObject -Class Win32_Processor).NumberOfLogicalProcessors > $temp_cpu_logical"
""
"Hostname: $($System.Name)"
"Domain: $($System.Domain)"
"PrimaryOwner: $($System.PrimaryOwnerName)"
"Make/Model: $($System.Manufacturer) ($($System.Model))" # "ComputerModel: $((Get-WmiObject -Class:Win32_ComputerSystem).Model)"
"SerialNumber: $((Get-WmiObject -Class:Win32_BIOS).SerialNumber)"
"PowerShell: $($PSVersionTable.PSVersion)"
"Windows Version: $($PSVersionTable.BuildVersion)"
"Windows ReleaseId: $((Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' -Name 'ReleaseId').ReleaseId)"
"Display Card: $((Get-WmiObject -Class:Win32_VideoController).Name)"
"Display Driver: $((Get-WmiObject -Class:Win32_VideoController).DriverVersion)"
"Display ModelDesc: $((Get-WmiObject -Class:Win32_VideoController).VideoModeDescription)"
"Last Boot Time: $([Management.ManagementDateTimeConverter]::ToDateTime((Get-WmiObject Win32_OperatingSystem | select 'LastBootUpTime').LastBootUpTime))" # $(wmic OS get LastBootupTime)
"Uptime: $uptime_string"
# ipconfig | sls IPv4
Get-Netipaddress | where AddressFamily -eq IPv4 | select IPAddress,InterfaceIndex,InterfaceAlias | sort InterfaceIndex
# Get-PSDrive | sort -Descending Free | Format-Table
# https://dev59.com/M5bfa4cB1Zd3GeqP0vCw
# https://www.petri.com/checking-system-drive-free-space-with-wmi-and-powershell
# https://www.oxfordsbsguy.com/2017/02/08/powershell-how-to-check-for-drives-with-less-than-10gb-of-free-diskspace/
# Get-Volume | Where-Object {($_.SizeRemaining -lt 10000000000) -and ($_.DriveType -eq “FIXED”) -and ($_.FileSystemLabel -ne “System Reserved”)}
gwmi win32_logicaldisk | Format-Table DeviceId, VolumeName, @{n="Size(GB)";e={[math]::Round($_.Size/1GB,2)}},@{n="Free(GB)";e={[math]::Round($_.FreeSpace/1GB,2)}}
# Note: -EA silent on Get-Item otherwise get an error
while (!(Test-Path $temp_cpu)) { while ((Get-Item $temp_cpu -EA silent).length -eq 0kb) { Start-Sleep -Milliseconds 500 } }
"CPU: $(cat $temp_cpu)"
while (!(Test-Path $temp_cpu_cores)) { while ((Get-Item $temp_cpu_cores -EA silent).length -eq 0kb) { Start-Sleep -Milliseconds 500 } }
"CPU Cores: $(cat $temp_cpu_cores)"
while (!(Test-Path $temp_cpu_logical)) { while ((Get-Item $temp_cpu_logical -EA silent).length -eq 0kb) { Start-Sleep -Milliseconds 500 } }
"CPU Logical: $(cat $temp_cpu_logical)"
rm -force $temp_cpu -EA silent ; rm -force $temp_cpu_cores -EA silent ; rm -force $temp_cpu_logical -EA silent
"Memory: $(Get-CimInstance Win32_PhysicalMemory | Measure-Object -Property capacity -Sum | Foreach {"{0:N2}" -f ([math]::round(($_.Sum / 1GB),2))}) GB"
""
"Also note the 'Get-ComputerInfo' Cmdlet (has more info but slower to run)"
""
}