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CPU - CPU plugin under the hood: Windows
Windows CPU details are taken from the statistics published by Windows PerfMon counters.
These figures can be displayed separately using the Windows Performance Monitor program perfmon.exe which comes with Windows.
The plugin uses Windows Performance Counters to retrieve the metrics. The current implementation uses the old PerfMon plugin’s code to retrieve the values. It uses the Registry API instead of the newer PDH API.
The schema for Win-CPU plugin is already deprecated. However, it still uses the Win-CPU plugin code under the hood when running CPU plugin on Windows.
Available Performance Counters can be seen in HKEY\_LOCAL\_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib.
Columns Copied
| Column Name | Windows 2008 / Vista | Windows 2008 R2 and later* | Remarks |
|---|---|---|---|
| CPU | Processor (238) | Processor Information | This is used to retrieve the processor instances i.e. 0,1, _Total |
| %processorTime | \Processor(%s)% Processor Time or \238(%s)\6 | \Processor Information(%s)% Processor Time | where %s represents the processor instance name |
| %userTime | \Processor(%s)% User Time or \238(%s)\142 | \Processor Information(%s)% User Time | where %s represents the processor instance name |
| %privilegedTime | \Processor(%s)% Privileged Time or \238(%s)\144 | \Processor Information(%s)% Privileged Time | where %s represents the processor instance name |
| interrupts/Sec | \Processor(%s)\Interrupts/sec or \238(%s)\148 | \Processor Information(%s)\Interrupts/sec | where %s represents the processor instance name |
| %DPCTime | \Processor(%s)% DPC Time or \238(%s)\696 | \Processor Information(%s)% DPC Time | where %s represents the processor instance name |
| %interruptTime | \Processor(%s)% Interrupt Time or \238(%s)\698 | \Processor Information(%s)% Interrupt Time | where %s represents the processor instance name |
| DPCsQueued/sec | \Processor(%s)\DPCs Queued/sec or \238(%s)\1334 | \Processor Information(%s)\DPCs Queued/sec | where %s represents the processor instance name |
| DPCRate | \Processor(%s)\DPC Rate or \238(%s)\1336 | \Processor Information(%s)\DPC Rate | where %s represents the processor instance name |
Counter index varies on Windows versions.
Commands Copied
| Command Name | Internal Command Name | Source Code | Performance Counters | Remarks |
|---|---|---|---|---|
| Top 20 Processes | TOPCPU | nt_aux.cpp > | \Processor | where %s represents the processor instance name |
| All Processes | TOPCPU | NT_GetCPU() | \Processor(%s)% Processor Time | where %s represents the processor instance name |
["Geneos"]
["Geneos > Netprobe"]
["FAQ"]