Feature: CPU metrics

[carlpett]

Possibly relevant WMI class: Win32_PerfRawData_Counters_ProcessorInformation, provides these fields:

Name (socket#+core#)
AverageIdleTime
AverageIdleTime_Base
C1TransitionsPersec
C2TransitionsPersec
C3TransitionsPersec
ClockInterruptsPersec
DPCRate
DPCsQueuedPersec
IdleBreakEventsPersec
InterruptsPersec
ParkingStatus
PercentC1Time
PercentC2Time
PercentC3Time
PercentDPCTime
PercentIdleTime
PercentInterruptTime
PercentofMaximumFrequency
PercentPerformanceLimit
PercentPriorityTime
PercentPrivilegedTime
PercentPrivilegedUtility
PercentPrivilegedUtility_Base
PercentProcessorPerformance
PercentProcessorPerformance_Base
PercentProcessorTime
PercentProcessorUtility
PercentProcessorUtility_Base
PercentUserTime
PerformanceLimitFlags
ProcessorFrequency
ProcessorStateFlags

Haven't found any MSDN documentation of this class, so potentially there might be better ones? It was the only one reported on my test machine, though

[carlpett]

Win32_PerfRawData_PerfOS_Processor might also be a candidate

[martinlindhe]

Win32_PerfRawData_Counters_ProcessorInformation seems to be undocumented, could only find reference to it in some discussion (google "site:microsoft.com Win32_PerfRawData_Counters_ProcessorInformation") and misc non-microsoft sites.

https://social.technet.microsoft.com/Forums/scriptcenter/en-US/a427da9f-d898-452e-a1df-1d7f913cf346/get-process-cpu-usage?forum=winserverpowershell

[martinlindhe]

https://msdn.microsoft.com/en-us/library/aa392397(v=vs.85).aspx mentions "Classes derived from Win32_PerfRawData and from Win32_PerfFormattedData must be used with a refresher object.", not sure we currently have ability to probe these using the current wmi lib. (research needed)

[brian-brazil]

The "refresher object" here is Prometheus.

[martinlindhe]

Oh :-) guess it seemed more complicated than it is

[brian-brazil]

Yeah, it's all written from the standpoint that you're writing a realtime console.

[martinlindhe]

Did we resolve this by merging #26 ?

[carlpett]

Yes, I think so