gtps3m0i | System Performance and Measurement Reference |
Now that you are familiar with the philosophy and mechanics of data
collection and reduction, let us focus on how to interpret the reports
generated by the data reduction programs. The data collectors and the
reports associated with each follow.
All the key parameters are reported on a per second or per message
basis. The per second approach provides the basis for analyzing the
system load characteristics; that is, the utilization of system hardware
components and program segments. The per message approach provides a
base for predicting the message rate the system can handle at any utilization
level.
- Note:
- When you compare numerical values in the performance reports found in this
document, some values for access per second have been influenced by the skip
factor. As reported in the Environment Summary Report, the skip factor
that is used to generate some reports in this document decreases raw access
numbers by a factor of 100. The skip factor can be specified separately
for program or system collectors. The skip factor provides a system
snapshot without disruptive production of huge amounts of data.
Accesses per second are calculated by dividing the estimated number of events
under a given skip factor by the total observation time. See the system
performance and measurement information in TPF
Operations for more information about the skip factor.