How to do Performance analysis and Capacity Planning for a shop. We also talk about Software Cost here.
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Ours is primarily a CICS, DB2 and VSAM shop. I have been moved to a performance team and I am trying to come up with some metrics to quantify performance of both CICS and batch programs. I also need some benchmarks which is acceptable.
I can think of 'response time of a transaction' as one of the metric for CICS. After searching, I see that there can be other metrics like getpages and cursor opens etc for DB2. But, what are considered as industry standards, how can I identify?
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There is no catch all benchmarking profiles/performance metrics ...
all depends who You are talking to ...
for a SLA the metrics could be response time, batch turnaround, application availability
fo accounting could be CPU, IO, disk space, infrastructure related
then there are the system related metrics
IOs per second, IO response time, main storage utilisation, paging, ..., ..., ...
and at the end the programming metrics
- for DB2 the number of cursor opens is a borderline metrics,
- it might just show a very complex application logic ( or poor programming )
research the IBM Redbooks collection for further ideas
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort