PERFSUM
The PERFSUM control statement requests the Performance Summary Report.
[BOTNECKS=([ENQUEUE={10|nn}][,CHANNEL={50|nn}]
[,OVERUTIL={95|nn}][,UNDERUTL={20|nn}]
[,PAGING={50|nn}][,TSO={15|nn}]
[,SUPERVSR={50|nn}][,AUXSTORE={90|nn})]
The PERFSUM statement uses data collected by the following Extractor control statements. See a discussion of these statements in the section that covers 'Extractor control statements.'
- ASMDATA
- CPU
- CHANNEL
- DEVICE
- ENQUEUE
- EXTSUM
- PAGING
- TSODATA
- WORKLOAD
Parameters
The parameters for the PERFSUM control statement are as follows:
BOTNECKS= | specifies the major parameter under which all of the following minor parameters fall This parameter must be coded. Parentheses must enclose the minor parameters if more than one is coded; for example: BOTNECKS=(CHANNEL=60,TSO=2) |
|---|---|
ENQUEUE= | specifies the percentage of total time that an excessive ENQUEUE conflict existed; the default is 10% |
CHANNEL= | specifies the percentage of overused channel path busy time; the default is 50% |
OVERUTIL= | specifies the percentage of overused CPU busy time; the default is 95% |
UNDERUTL= | specifies the percentage of underused CPU busy time; the default is 20% |
PAGING= | specifies a value for average pages per second that would be considered too high; the default is 50 pages per second |
TSO= | specifies an average TSO response time that would be considered too high; the default is 15 seconds |
SUPERVSR= | specifies a percentage of CPU busy time spent excessively in supervisor state; the default is 50% |
AUXSTORE= | specifies the percentage of overused auxiliary storage slots; the default is 90% |
Example
This example produces a Performance Summary Report designating bottleneck tolerance thresholds: the percentage of time the CPU is over 98% busy; the percentage of channel busy time over 35%; average pages per second over 20; and TSO response time in excess of 6 seconds.
Related topics