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JCL & VSAM :: CPU time Vs Number of records

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Author: Nileshkul
Subject: CPU time Vs Number of records
Posted: Mon May 09, 2016 4:05 pm (GMT 5.5)

Dear All,

I have a VSAM file which is fairly constant volume - sort of control data.

The file is read in batch. It has around 200 K records. The file is read in batch modules via keys. If I reduce record count to 20 K (i.e. 10% of original), will the keyed reads perform faster in batch? And if yes will that be considerable improvement to CPU time?

Thanks,
Nilesh.


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