---------------------------<snip>-----------------------------
Using SMF30 subtype 4
Calculate top 100 cpu consuming steps (Total of TCB/SRB) by program name (EXEC
PGM=) over some period of time.
Add any appropriate filters and retry. E.G. IEBGENER - IBM code, can't do much
about it in the short run, so ignore.
Calculate for the top 100 CPU consumed/IO (excp count).
Rank the top 100 by CPU/IO.
Start at the top of the list and work down using STROBE, GTF, other to
determine the cause.
Code/test/promote.
Repeat ad infinitum, until be benfits gained are exceeded by the effort
required.
Hope this approach helps.
----------------------------<unsnip>----------------------------
This sounds good until you dig a little deeper. There's no record in SMF
of any subroutines, etc. that are invoked via LINK or LOAD/CALL/DELETE
or ATTACH or XCTL.
This "little gap" can lead to a lot of missing formation. BTDTGTSS
Rick
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