Thanks Rob that was my advice too, It's not something we do a lot.
I was mainly curious as to what SDSF could possibly be doing to take so
long, surely the spool is just on DASD somewhere!
thanks
GA
Rob Scott
<rsc...@rocketsof
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.edu> Re: SDSF - so slow!
03/02/2009 11:36
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Gerry,
SDSF has quite a bit of overhead to read records from the spool.
My advise would be to change the GCSPROCP job to write its output directly
to a DASD file and then pass it to the next step to be processed by
Filemaster - if you still need the output on JES spool then just add an
extra IEBGENER step to copy to SYSOUT.
Rob Scott
Rocket Software, Inc
275 Grove Street
Newton, MA 02466
617-614-2305
rsc...@rs.com
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf
Of Gerry Anstey
Sent: 03 February 2009 11:25
To: IBM-MAIN@bama.ua.edu
Subject: SDSF - so slow!
OK bad design, we have lot of cack here, probably due to hiring cheap
programmers, any way, I digress.
Here s the SDSF summary:
PREFIX=GCSPROCP DEST=(ALL) OWNER=* SYSNAME=FMVS
NP DDNAME STEPNAME PROCSTEP DSID OWNER C DEST REC-CNT
JESMSGLG JES2 2 PSTGCS T LOCAL 52
JESJCL JES2 3 PSTGCS T LOCAL 44
JESYSMSG JES2 4 PSTGCS T LOCAL 94
DDPRINT GCSPROCP 106 PSTGCS 0 LOCAL 3
CMPRINT GCSPROCP 107 PSTGCS 0 LOCAL 28,559
CMPRT01 GCSPROCP 108 PSTGCS T LOCAL 25M
Now we had a need to extract some of the records in CMPRT01, I wrote job to
run SDSF in batch and to use the PRINT ODSN command to extract the data to
a data set.
Then I read the dataset with Filemaster and extracted the desired records
into a smaller file.
My questions are:
1. Any ideas why SDSF takes appox 90 minutes (120000 EXCPs + 31mins CPU) to
read and write out the data and Filemaster takes about 3 minutes to read
25million recs and write about 1.5million?
2. Is there any way to make SDSF extract faster?
thanks
Gerry Anstey
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