On 1/04/2016 4:03 PM, Andrew Rowley wrote:
Thanks for those numbers.
I'm guessing that zIIP time isn't in the Total CPU Time, so we are
comparing user+sys in the second with Total CPU in the first? So it
looks like Java overhead is about ~40% in this case? Not too
dissimilar to what I found, depending on whether Java did any
processing of the records.
I don't count the sys (kernel) time.
Regards
Andrew Rowley
On 01/04/2016 05:40 PM, David Crayford wrote:
Pretty close. I haven't tried it on a massive data set. The assembler
routine is for QSAM.
RECFM=VB ,LRECL=32756,BLKSIZE=32760 SPACE=(CYLS,(1500))
Assembler:
Program Name QIOT hh:mm:ss.th
Step Name QIOT Elapsed Time 14.90
Procedure Step TCB CPU Time 02.75
Return Code 00 SRB CPU Time 01.76
Total I/O 42800 Total CPU Time 04.51
Service Units 61344
Region Size 32768K Pages Paged 1
Data/Hiperspace 0M Pages Swapped 0
ASID Swaps 0 Pages Stolen 0
VIO (In and Out) 0
--------Below 16Meg-------- --------Above 16Meg--------
Private Area 9192K Private Area 1539072K
Max Allocated 12K Max Allocated 304K
LSQA And SWA 272K LSQA And SWA 10780K
JZOS RecordReader:
Step Termination Statistics
Program Name COZBATCH hh:mm:ss.th
Step Name RUNCOZ Elapsed Time 15.90
Procedure Step TCB CPU Time 00.23
Return Code 00 SRB CPU Time 01.87
Total I/O 65372 Total CPU Time 02.10
Service Units 139K
Region Size 8384K Pages Paged 1
Data/Hiperspace 0M Pages Swapped 0
ASID Swaps 0 Pages Stolen 0
VIO (In and Out) 0
--------Below 16Meg-------- --------Above 16Meg--------
Private Area 9192K Private Area 1539072K
Max Allocated 64K Max Allocated 234000K
LSQA And SWA 288K LSQA And SWA 127880K
real 0m15.63s
user 0m 4.65s
sys 0m 1.55s
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