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HSM tuning Tips

 
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vicky10001
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Joined: 13 Jul 2005
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PostPosted: Thu Feb 12, 2009 10:07 am    Post subject: HSM tuning Tips
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Dear All,

Mainframe HSM jobs its runing daily so its consuming more CPU time in our system so We are going to tune the HSM job.
Please let us know if anybody having tuning tips...

We need suggestion for which parameter it will reduce the CPU time and if any method we can implement.

Please help me. If you have any doc's please reply back....
Thanks in advance
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dick scherrer

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PostPosted: Thu Feb 12, 2009 10:36 am    Post subject:
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Hello,

Quote:
If you have any doc's please reply back.
Please check this prior topic - it has a couple of links that may help.
http://ibmmainframes.com/viewtopic.php?t=20409

Keep in mind that cpu usage is not going to be a tunable parameter on its' own. What you are seeing is due to the amount of work hsm is currently required to do.

Suggest you work with your storage admins to make sure the data is properely allocated so that such a high amount of activity is not necessary. This may be helped by additional dasd or the re-classification of some of the dasd to accomodate the current trends.
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expat

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PostPosted: Thu Feb 12, 2009 12:33 pm    Post subject:
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First thing is to identify which processes are consuming humungous amounts of CPU, and then identify why. HSM will produce logs and SMF records of everything that it does.

This may not be limited to HSM alone as HSM is controlled by the SMS MGMTCLAS construct.

And are you sure it is CPU time that mention, or perhaps elapsed time is the problem.
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vicky10001
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PostPosted: Tue Feb 17, 2009 9:42 am    Post subject:
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Thanks a lot for Help.


Please let me know what are the pararmeter we can use in HSM jobs and Which parameter will take less CPU time.Please
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dick scherrer

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PostPosted: Tue Feb 17, 2009 9:53 am    Post subject:
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Hello,

To repeat:
Quote:
Keep in mind that cpu usage is not going to be a tunable parameter on its' own.

Quote:
Please let me know what are the pararmeter we can use in HSM jobs and Which parameter will take less CPU time
There is no "reduce cpu used" parameter. . .
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expat

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PostPosted: Tue Feb 17, 2009 12:32 pm    Post subject:
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vicky10001 wrote:
Thanks a lot for Help.
Please let me know what are the pararmeter we can use in HSM jobs and Which parameter will take less CPU time.Please

Which of the steps suggest in my earlier post have you so far completed.
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