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Performance from buffering

 
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srinivasa gunja

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Joined: 22 May 2009
Posts: 7
Location: bangalore

PostPosted: Tue Jul 28, 2009 2:46 pm    Post subject: Performance from buffering
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hi,

I have a requirement to improve the performance of a job which is using VSAM files. It is a KSDS file and having buffer value of BUFND=50,BUFNI=100.

Is there any scope to achieve performance from buffering

Tnx,
Srini
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expat

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Joined: 14 Mar 2007
Posts: 8593
Location: Back in jolly old England

PostPosted: Tue Jul 28, 2009 3:03 pm    Post subject:
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Understanding what the program does is a good place to start.

Also reading the book in the link below.

VSAM demystified can be found HERE. Please take the time to read it thoroughly.
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Robert Sample

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Joined: 06 Jun 2008
Posts: 8117
Location: East Dubuque, Illinois, USA

PostPosted: Tue Jul 28, 2009 3:08 pm    Post subject:
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It is not likely that additional buffering will have much impact upon the performance of your job -- and performance could actually suffer. You may have to make coding changes to improve performance.
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