Brian,
here is the the file after, it's blocked efficiently, indeed other things
process it in minutes:
Data Set Information
Command ===>
Data Set Name . . . . : SZ.SDSF.WORK
General Data Current Allocation
Management class . . : DEVSTD Allocated cylinders : 4,015
Storage class . . . : STANDARD Allocated extents . : 201
Volume serial . . . : HAT10D +
Device type . . . . : 3390
Data class . . . . . : MULTDVE Current Utilization
Organization . . . : PS Used cylinders . . : 4,012
Record format . . . : FBA Used extents . . . : 201
Record length . . . : 133
Block size . . . . : 27930
1st extent cylinders: 15
Secondary cylinders : 20
Data set name type : SMS Compressible : NO
Creation date . . . : 2009/02/03 Referenced date . . : 2009/02/03
Expiration date . . : ***None***
To display multiple volumes press Enter or enter Cancel to Exit.
Brian Westerman
<Brian_Westerman@
SYZYGYINC.COM> To
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<ibm-m...@bama.ua Subject
.edu> Re: SDSF - so slow!
04/02/2009 06:03
Please respond to
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<ibm-m...@bama.ua
.edu>
I can't believe how stupid my last comment (and test) was, I looked at the
wrong line of his output and completely missed that the next DS in line was
25 MILLION lines.
I don't have any 25M line jobs to test, but I went to our test runs of
SyzSpool and looked at the stats for various size output. I don't see how
any of them would multiply out to the numbers that he is seeing.
The 120,000 EXCPs is possible putting about 400 recs/block in the datasets,
but that seems to be strange (or maybe pretty big records). Maybe your
writing them out to a dataset that is blocked badly, or the JES dataset is
really screwed up.
If you were to select your output in SDSF, then MAX DOWN to the bottom, how
long does that take? If it isn't 1/2 of the numbers that you have provided
initially, then the problem isn't with the input dataset (or SDSF) itself,
but rather with the output DS that you are writing it into. Although if
it's the input DS that is the problem then this test will not really show
us
very good results, only if the output dataset is the issue. It would be
interesting to know the record size of the input and the DCB of the output.
Sorry for the stupidity of the last post.
Brian
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