HP OpenVMS Systems

Average Process CPU Usage?

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The Question is:

 
Is there an existing OpenVMS utility that will show me the average CPU time
 utilization for a specific process over time.
 
I see that in SDA, I can get the "CPU since last quantum" value, and the "Timer
 queue limit" value (which I believe is the same as the SYSGEN parameter
 QUANTUM), but I am unaware of a utility that will give me an average of the
 percentage of alloted time
that is being used by a specific process.
 

The Answer is :

    Timer Queue Limit is a process quota which limits the number of timer
    queue requests that a process may have outstanding. A timer queue
    request is a mechanism for a process to be notified at a particular
    time in the future. It has nothing to do with CPU time consumption or
    QUANTUM.
 
    Depending on your exact definition, "CPU Utilization" for a particular
    process can be calculated by dividing CPU consumption by the total
    elapsed time the process has existed. Elapsed time can be
    calculated as the difference between the current time and the time the
    process was created ($GETJPI item code JPI$_LOGINTIM). The CPU
    consumption can be determined from JPI$_CPUTIM. Utilization for other
    intervals is simply a matter of sampling CPUTIM at the beginning and
    end of the interval. Implementation left as an exercise.
 

  

     

     
answer written or last revised on ( 29-OCT-2002 )
     
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