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MRTG and WMI - trying to calculate my own %ProcessorTime from PerfRawData
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ivan...@gmail.com
Apr 16, 2012, 10:14:52 AM4/16/12
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I have a working MRTG that's getting values from %ProcessorTime in Win32_PerfFormattedData_PerfOS_Processor
But the values I'm getting here are only spot measurements AFAIK, so they're not really showing the average processor usage over the last 5 minute period.
So I wanted to make an MRTG config that uses %ProcessorTime in Win32_PerfRawData_PerfOS_Processor instead.
I know how this counter works, and I know how to do the math - on paper.
But I'm not able to get MRTG to do the correct math
I have an external script 'wmicget.bat' that outputs values from WMI classes/properties in the correct MRTG 4-line format
If I do it like this, it will make graphs showing idle processor time...
Target[CPURAW]: `wmicget.bat Win32_PerfRawData_PerfOS_Processor PercentProcessorTime _Total` / 100000
So on paper to get it to show processor time (instead of idle time), you just subtract the result from 100, like this...
Target[CPURAW]: 100 - ( `wmicget.bat Win32_PerfRawData_PerfOS_Processor PercentProcessorTime _Total` / 100000 )
... but it's just outputting ridiculous high numbers.
What's going on? Am I doing something wrong, or is MRTG doing the math totally wrong?
But the values I'm getting here are only spot measurements AFAIK, so they're not really showing the average processor usage over the last 5 minute period.
So I wanted to make an MRTG config that uses %ProcessorTime in Win32_PerfRawData_PerfOS_Processor instead.
I know how this counter works, and I know how to do the math - on paper.
But I'm not able to get MRTG to do the correct math
I have an external script 'wmicget.bat' that outputs values from WMI classes/properties in the correct MRTG 4-line format
If I do it like this, it will make graphs showing idle processor time...
Target[CPURAW]: `wmicget.bat Win32_PerfRawData_PerfOS_Processor PercentProcessorTime _Total` / 100000
So on paper to get it to show processor time (instead of idle time), you just subtract the result from 100, like this...
Target[CPURAW]: 100 - ( `wmicget.bat Win32_PerfRawData_PerfOS_Processor PercentProcessorTime _Total` / 100000 )
... but it's just outputting ridiculous high numbers.
What's going on? Am I doing something wrong, or is MRTG doing the math totally wrong?
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