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Mainframe Usage Rexx Tool

 
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Rupali khiste

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Joined: 09 Jul 2009
Posts: 1
Location: Pune

PostPosted: Thu Jul 09, 2009 3:35 pm    Post subject: Mainframe Usage Rexx Tool
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Hi ,
Do we have any Tool/JCL by which we could track/identify the Mainframe usage by a resources. Or even we have a basic idea about how can we develope it.Please let me know if you are not getting my question.

Thanks,
Rupali
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expat

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Joined: 14 Mar 2007
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Location: Back in jolly old England

PostPosted: Thu Jul 09, 2009 3:40 pm    Post subject:
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Don't go there. REXX can not handle RECFM=VBS which most SMF records are stored as. REXX is also far too slow for volume processing, i.e. high volume of records to process.

Do you not already have a performance / capacity planning team.
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Robert Sample

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Location: East Dubuque, Illinois, USA

PostPosted: Thu Jul 09, 2009 4:49 pm    Post subject:
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Quote:
Do we have any Tool/JCL by which we could track/identify the Mainframe usage by a resources.
The package is called SMF (System Management Facilities) and it is a standard part of z/OS, hence installed at every site. SMF records are, as expat notes, variable blocked spanned and notoriously difficult to work with since many of the records use individual bits as flags, and some records have to be combined to get overall statistics.

There are vendor products to simplify resource management by doing various things with the SMF records; such products include MXG and MICS. The cost of these packages is far, far less than developing your own solution since there are over 100 SMF record types, plus many software vendor packages can create SMF records as well. A conservative estimate would be well over 1,000 hours (5,000 to 10,000 hours would not be out of line in my mind) to develop an equivalent in-house solution.
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MBabu

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PostPosted: Thu Jul 09, 2009 6:07 pm    Post subject:
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If you describe the exact kind of information you are looking for, we can suggest existing methods. If you are just looking for things like CPU time or I/O cost or % utilizations of CPU or space, there are simpler alternatives than SMF (like processing job logs, RMF, etc)
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