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Batch Pipe Concept

 
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ilakkia
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PostPosted: Wed Jun 04, 2008 12:30 pm    Post subject: Batch Pipe Concept
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I had to reduce the CPU time consumed by a job.
Hence i used the Batch Pipe concept for one particular file.
I overrided the actual file in DD name SORTOUT with a pipe file as shown below:

//STEP05R.SORTOUT DD DISP=SHR,
// UNIT=SYSDA,
// DCB=(RECFM=FB,LRECL=4000,BLKSIZE=24000,BUFNO=30),
// SPACE=(TRK,(40000,9000),RLSE),
// LABEL=RETPD=01,
// SUBSYS=(BP01,'PIPEDEPTH=200'),
// DSN=TEST.PIPE.CXA100P1.TRADES.DX081511
//*

My doubt is how to choose the Batch Pipe subsystem name (its BP01 in the above case) and how to fix the PIPEDEPTH?
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enrico-sorichetti

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PostPosted: Wed Jun 04, 2008 12:37 pm    Post subject: Reply to: Batch Pipe Concept
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Quote:
My doubt is how to choose the Batch Pipe subsystem name (its BP01 in the above case) and how to fix the PIPEDEPTH?

ask Your support for the subsystem name
( we did not customize Your system, they did )
look at the manual for an explanation of the pipedepth parameter
( its , IIRC, related to the DCB bufno parameter )
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expat

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PostPosted: Wed Jun 04, 2008 12:39 pm    Post subject:
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Not sure on how using Batch Pipes will reduce the CPU time as there will be no reduction in actual processing, all of the records will still be processed in exactly the same way as before but with the added overhead of the batch pipes processing.

Do you perhaps mean the elapsed time of the job ???
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ilakkia
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PostPosted: Wed Jun 04, 2008 3:22 pm    Post subject: BatchPipes
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Yes, I meant the Elapsed time of the job.

Thanks,
Ilakkia
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expat

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PostPosted: Wed Jun 04, 2008 4:21 pm    Post subject:
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Have you looked at other areas as well, optimum blocking, I/O bottlenecks, files being used and how they are used. Plus numerous others to consider.
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