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Monitoring Linux Run Queue on HPOA v8.6.xx

I cannot for the life of me find out how this is done. There is no policy in the OSSPI, so is it done?

 

Cheers,

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Hi, you need to write  a policy to monitor the metric GBL_RUN_QUEUE. Usually the warning threshold for this on Linux is the number of cores/processors + 1. i.e. if there are 4 cores/kernel threads available then the lowest threshold is 5. I would wait to check if this lasts for at least 3 intervals (15 mins, say) to send out an alert. Set higher thresholds at 6, 7,...

 

Rather than look at the GBL_RUN_QUEUE which is a value that is obtained just at that point, you can also look at the GBL_LOADAVG or GBL_LOADAVG5 metrics which give the state of the system summarized over a given period of time. I would keep the same thresholds in this case.

 

Finally, you could also use the couple of policies with the InfraSPI (specifically SISPI) which monitor GBL_LOADAVG metric in a thresholded way or using adaptive baseline approach.

 

SI-CPUBottleneckDiagnosis

SI-RunQueueLengthMonitor-AT

 

If you plan to start using the InfraSPI i would recommend looking at feasibility to use the latest 11.1x agents - the InfraSPI is bundled in with this agent package.

 

HTH

- ramd

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What is the threshold value? Client seems to think it can be set to 50.....? I think they have missed how Run Q is measured, do you know or can you explain it to me please?

 

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Captain, i have given the answer above. a lowest threshold would start with the number of CPUs + 1 persisting for at least 3 intervals.

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