What is total CPU time for Job? Should we just take TCB time? Should be just take SRB time? But what is the Total CPU time shown in the SYSOUT itself, is not it TCB+SRB already? Or all of this is just not applicable? Please guide me on this, this seems to be confusing?
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Total CPU time for a job will generally be TCB time plus SRB time ... plus zIIP/zAAP time (if any). TCB time is the time spent in your program while SRB time is the time spent doing I/O and other system activities. The job output will reflect the total of TCB and SRB (within the accuracy of the display -- CPU time is kept to a much higher precision that the job output allows to be shown).
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