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Mainframe performance testing

 
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awyn

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Joined: 11 Feb 2008
Posts: 49
Location: chennai

PostPosted: Thu May 29, 2008 12:13 pm    Post subject: Mainframe performance testing
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hi ,
can u tell me how to do mainframe performance testing and what are the different aspects should be covered to do mainframe performnace testing..
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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 May 29, 2008 12:14 pm    Post subject:
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What are you looking to find out ?
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awyn

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Joined: 11 Feb 2008
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Location: chennai

PostPosted: Thu May 29, 2008 12:33 pm    Post subject:
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i want to know in what aspects the performance of mainframe is considered.and how the different different teting like volume, stress all should be considred for mainframe jobs
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vasanthkumarhb

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Joined: 06 Sep 2007
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Location: Bang,iflex

PostPosted: Thu May 29, 2008 12:47 pm    Post subject:
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Hi,

Mainframe includes technologies such as COBOL, VSAM, DB2, JCL etc

What exactly u need to know in which area????
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dick scherrer

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Joined: 23 Nov 2006
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PostPosted: Thu May 29, 2008 7:33 pm    Post subject:
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Hello,

Is this a school assignmrnt or is this for some part of your job with some company?

Your answer to that will generate different kiinds of answers.
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Pedro

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Joined: 01 Sep 2006
Posts: 2033
Location: Silicon Valley

PostPosted: Thu May 29, 2008 10:20 pm    Post subject: Reply to: Mainframe performance testing
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Sorry, I am not a performance management professional *...

But I recall that there are products that simulate a workload over a long period of time. The workload is a variety of read / update requests. The objective is to figure out how much of something can be done and to get the average.

And then to be able to have the same workload to test various configurations or various hardware.

* I think performance testing is a career unto itself in larger software development companies. It can be somewhat complex to setup and to measure.
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dick scherrer

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Joined: 23 Nov 2006
Posts: 19270
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PostPosted: Fri May 30, 2008 12:40 am    Post subject:
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Hello,

Quote:
performance testing is a career unto itself in larger software development companies
It is also in some organizations with very large environments. Between the cost of bigger faster hardware and the licensing practice known as "tiered pricing" (the license costs more when run on a more powerful system) very large $ savings may be realized by having good "local" performance measurement (and tuning).

The current tendancy to just throw slop together is making this more important. I've been asked to help with several "long-running" batch processes to see if they could be improved. Looking at the jobstreams, i found multiple executions of the sort product and other utilities that passed 100s of millions of records multiple times just to prevent writing one application program.

The thought process went something like "if i had a file with... i could. . .'. This was repeated a few times slicing the requirement into many unneeded passes of the data. The "reason"s to bypass coding a solution were many - 2 of which were:
. that "jcl" could be promoted very quickly while "programs" could not.
. the developer was completely unqualified as a programmer and was unable to write the code.
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