GPA Manual for G-series RVUs

Guardian Performance Analyzer (GPA) Manual – (544977-001) Page 17 of 106
Figure 1-1. How GPA Works
The GPA module is essentially a model of a NonStop system node. In performing its
analysis, GPA breaks the system down into the following subsystems: CPU, memory,
disk volume, and disk cache. GPA then assesses the performance of the system as a
whole and also separately analyzes each subsystem with respect to a number of
relevant performance parameters such as CPU utilization, disk volume queuing, cache
hit percentage, and so on. The module processes the formatted data files in accordance
with the model and uses the text formats contained in the TUNEDATA file to generate
the GPA standard textual reports.
PUPIN is a PUP INPUT file that can be run to tune the system according to some of the
GPA recommendations. The file contains PUP PRIMARY and PUP SETCACHE
commands. The PRIMARY commands are used to move primary disk processes