No CICS or DB2 or WEB
It is mostly in C++, the system has a lot of real storage so no relevant
pageing.
Lizette Koehler wrote:
Before I could guess, I would need more information
Does this job use DB2?
Does it use CICS?
Does it use WEBSPHERE?
Is it accessing data on a server?
What lanaguage is it written in?
Any dasd or communications issues at the time?
If I have a looping situation (transaction, batch job, tso user) that is
consuming the CPU, then all other work might suffer.
What is the workload during the anomalous run time? Workload can have an
impact, but so can external forces. Without more detail, I am not sure you can
get a good rule of thumb.
I have seen the same job run with many hours difference. Mainly due to it
communicating with a server that was not responding. I would think that if
everything is working well, you should see little run time difference.
I'm always saying "little runtime difference", but 5 or 10% CPU time is
little in 1 min CPU runtime ?
Just my opinion.
Lizetet
I got this question time to time:
What is the maximum CPU time difference for the same job, between
repeated runs, under different system load ?
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