In [EMAIL PROTECTED], on 04/02/2008
at 04:35 AM, Sascha Weng [EMAIL PROTECTED] said:
I have a programm written in Cobol which runs monthly on a z/Os-System.
The programm reads inputrecords and writes them in a database (DB2) and
in different outputfiles. It consumes nearly the same numbers
the job protocol 11.25 (what ever that means) and this month it consumed
16.33. Actually I expected the cpu time would be nearly the same. But there is
this difference I can not explain. Any suggestions would be greatly appreciated.
There are several reasons why Run- or CPU-Times may change.
] On Behalf
Of Sascha Weng
Sent: Wednesday, April 02, 2008 5:36 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: CPU-Time in z/Os-System. Is The Cpu Time In z/Os-systems A
Meaningful Indication?
It is the first time, that I write to this list and I am not quiet sure, if
I am on
the right place for asking my question
It is the first time, that I write to this list and I am not quiet sure, if I
am on
the right place for asking my question. I hope not being off-topic. If so,
please
accept my apology for my ignorance in advance.
I have a programm written in Cobol which runs monthly on a z/Os-System. The
I forgot to mention that you should search the IBM MAIN archives, I believe
there was a recent thread on job runtime variations.
Lizette
snip
It is the first time, that I write to this list and I am not quiet sure, if
I am on
the right place for asking my question. I hope not being
On Wed, 2008-04-02 at 04:35 -0500, Sascha Weng wrote:
The programm reads inputrecords and writes them in a database (DB2)
and in different outputfiles [...] I expected the cpu time would be
nearly the same. But there is this difference I can not explain.
A month or two ago we enabled
I have a programm written in Cobol which runs monthly on a
z/Os-System.
The programm reads inputrecords and writes them in a database (DB2)
and in
different outputfiles. It consumes nearly the same numbers of input
records every month. I wonder now, why there are so great differences
in the
.
-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Craddock, Chris
Sent: Wednesday, April 02, 2008 10:22 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: CPU-Time in z/Os-System. Is The Cpu Time In z/Os-systems A
Meaningful Indication?
I have a programm written
I'd suggest that you look into DB2 detailed accounting report which gives a
very good account of where the CPU was spent while doing DB2 work.
Compare the two reports if your site keeps this historical data otherwise make
do with new report and see what can be improved. There are so many
Chris has said (better than I could) what I was thinking. First stop
should be DB2.
Jon
snip
If the amount of data really is about the same then you have to look to
the organization of the data. For your input files; the block size may
have changed which could lead to an increase in CPU time,
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