如何从给定的列表中获得特定的WMI度量

Question

我想监控nVidia卡的两个特定指标(编码器和解码器使用)从nVidia清单中，我已经将以下行复制到powershell中:

$gpus = Get-WmiObject -namespace "rootcimv2nv" -class gpu
foreach($object in $gpus) # obtain an instance
{
$object.invokeMethod("info",$null)
}

但这迭代了许多指标，并给出了一个包含指标的大列表:

PS C:UsersAdministratorScripts> .check.ps1
class: Gpu
class version: 2.4.0
object name: Quadro P2200
object ID: 1 (0x1)
GPU handle: 0xD800
GPU type: Quadro
GPU memory type: GDDR5X
Virtual memory size: 53488 MB
Physical memory size: 5120 MB
Available memory size: 1242 MB
Memory bus width: 160
Number of cores: 1280
Current GPU clock: 1754 MHz
Current Memory clock: 5005 MHz
Power consumed over sampling period: 29.369 Watt
Power sampling period: 1 ms
Number of power measurement samples: 1
The percentage of time where the GPU is considered busy: 21
The percentage of GPU memory utilization: 75
Video BIOS version: 86.6.77.0.5
Device Info: PCIVEN_10DE&DEV_1C31&SUBSYS_131B1028&REV_A1
coolers: Cooler.id=1
thermal probes: ThermalProbe.id=1
ECC: Ecc.id=1
PCI-E current bus protocol generation: 3
PCI-E current width: 16 lanes
PCI-E current speed: 8000 Mbps
PCI-E maximum bus protocol generation: 3
PCI-E maximum width: 16 lanes
PCI-E maximum speed: 8000 Mbps
PCI-E downstream width: 16 lanes
VideoEngine Encoder usage: 76%
VideoEngine Decoder usage: 6%
VideoEngine Encoder sampling period: 167000 ms
VideoEngine Decoder sampling period: 167000 ms
VideoEngine Encoder sessions: 11
VideoEngine average FPS: 50
VideoEngine average latency: 1264 ms

我如何制定WMI命令或管道指令，如grep，以便我从VideoEngine Decoder Usage和VideoEngine Encoder Usage中获得单一结果?这些编码器/解码器使用指标似乎是一个子类的一部分，称为"视频编解码器"，可以通过以下方式请求:Get-WmiObject -Class Gpu -ComputerName localhost -Namespace ROOTcimv2NV | Select-Object *

结果是一个列表，我只粘贴了它的底部部分:

productName           : Quadro P2200
productType           : 2
thermalProbes         : {ThermalProbe.id=1}
uname                 : Quadro P2200
ver                   : System.Management.ManagementBaseObject
verVBIOS              : System.Management.ManagementBaseObject
videoCodec            : System.Management.ManagementBaseObject
Scope                 : System.Management.ManagementScope
Path                  : \DHC-AMPP-NODE13ROOTcimv2NV:Gpu.id=1,uname="Quadro P2200"
Options               : System.Management.ObjectGetOptions
ClassPath             : \DHC-AMPP-NODE13ROOTcimv2NV:Gpu
Properties            : {archId, archName, coolers, coreCount...}
SystemProperties      : {__GENUS, __CLASS, __SUPERCLASS, __DYNASTY...}
Qualifiers            : {dynamic}
Site                  :
Container             :

我的想法是将这两个指标收集到一个名为zabbix的监控系统中，使用powershell脚本。

Answer 1

这些都存在于videoCodec属性中，所以只需过滤结果:

$gpus = (Get-WmiObject -namespace "rootcimv2nv" -class gpu).videoCodec | 
Select percentEncoderUsage,percentDecoderUsage,encoderSamplingPeriod,
decoderSamplingPeriod,encoderSessionsCount,averageFps,averageLatency

或更短的版本:

$gpus = (Get-WmiObject -namespace "rootcimv2nv" -class gpu).videoCodec | 
Select *coder*,*average*

将结果:

percentEncoderUsage   : 0
percentDecoderUsage   : 0
encoderSamplingPeriod : 167000
decoderSamplingPeriod : 167000
encoderSessionsCount  : 0
averageFps            : 0
averageLatency        : 0