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monika_vora
New User
Joined: 16 May 2007
Posts: 1
Location: mumbai
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Hi! i have two jobs which are taking very high MIPS. Now i need to find out the programs which may be taking longer execution time. I am referring to JESLOG for the same. But it is getting confusing as i dont know which parameter would tell me which program is taking more time.
Any help on this issue is appreciated! |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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How do you know they are using high MIPS ?
The amount of CPU is usually shown for each step on the output, but although this is the norm for most sites, this may be site specific and not shown.
The best way to determine exactly how much CPU a step uses is the SMF records, type 30. These can be a real PITA to decipher, but are the only accurate measurement that you will get.
Have you checked to see if your job is I/O bound ? |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hello,
When you say "taking longer" do you mean elapsed time, cpu time, or something else?
A good place to see time for a job you've just run is in the sysout from JES.
Something like this is usually at the bottom of the first sysout dataset:
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16 MAY 2007 JOB EXECUTION DATE
29 CARDS READ
97 SYSOUT PRINT RECORDS
0 SYSOUT PUNCH RECORDS
5 SYSOUT SPOOL KBYTES
24.52 MINUTES EXECUTION TIME
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Something like this will be at the end of each step in the third sysout dataset:
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STEP/STEP1 /START 2007136.0939
STEP/STEP1 /STOP 2007136.1003 CPU 0MIN 41.43SEC SRB 0MIN 05.65
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Maybe this will let you see what you are looking for. The same info is in the SMF records as mentioned before, but they can be tedious to work with. . . |
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