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analyst
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Joined: 10 May 2007
Posts: 11
Topics: 8
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 Posted: Tue Feb 15, 2011 2:56 pm Post subject: How to find out CPU Usage of current jobs |
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| Some times my job is taking so much Elapsed Time although CPU time is same.When I asked the performance team they informed that is another job is in Loop. Could anybody please let me know,how to check at that point what other jobs are running and their CPU usage. |
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kolusu
Site Admin
Joined: 26 Nov 2002
Posts: 12375
Topics: 75
Location: San Jose
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| Posted: Tue Feb 15, 2011 3:20 pm Post subject: |
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analyst,
When both jobs are running ,go to SDSF and choose DA Active users queue and press PF11 to scroll to the right and see the cpu% and EXCP columns.
Kolusu
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Kolusu
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IEFBR14
Beginner
Joined: 13 Aug 2008
Posts: 17
Topics: 0
Location: SYS1.LINKLIB
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| Posted: Tue Feb 15, 2011 6:03 pm Post subject: |
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| Not the question OP asked but hey !.... Cant help but think that the "performance team" have offered a very simplistic (and in many cases wrong) answer |
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papadi
Supermod
Joined: 20 Oct 2009
Posts: 594
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| Posted: Wed Feb 16, 2011 12:15 am Post subject: |
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| Quote: | | Some times my job is taking so much Elapsed Time although CPU time is same. |
It is difficult to "tune elapsed time" in a multiprocessing environment.
Most often the elapsed time of a particular job is highly dependent on competition for resources (cpu, file i/o, database, etc) with other tasks currently running.
Usually, a job will use the about same amount of cpu time if it is run multiple times (assuming it is doing the same work each run).
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All the best,
di |
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taltyman
JCL Forum Moderator
Joined: 02 Dec 2002
Posts: 310
Topics: 8
Location: Texas
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| Posted: Wed Feb 16, 2011 11:45 am Post subject: |
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| For after the fact viewing you may see if you have access to RMF. Try TSO RMF from ISPF to see if they have it in your linklist concatenation. If you get the RMF primary screen then select option 3. Then option 2 will show job delays. Fill in the jobname, etc and it will list what was causing the delays. |
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