GPA Manual for G-series RVUs

Guardian Performance Analyzer (GPA) Manual – (544977-001) Page 18 of 106
among the CPUs in the system in order to help balance the load on the CPUs. The
SETCACHE commands are used to redistribute the cache allocations for the volumes to
improve the operating efficiency of the system.
PUPBAK is a PUP INPUT file that can be run after PUPIN, if necessary, to restore the
system to its original measured state.
SCFIN and SCFBAK have the same function as PUPIN and PUPBAK, but the PUP
utility is used on systems prior to G02. SCF is used on G02 and later operating
systems. Either PUP files or SCF files will be created, depending on the operating
system.
Standard Report Sections
The GPA standard report provides performance analysis data and evaluations for the
system under study. The report consists of the following major sections:
• System Performance Summary: A concise presentation of system performance
data and evaluation of overall system health.
• Process and Busy Distribution Analyses: A concise presentation of the number,
location, and CPU utilization of processes within the system.
• Processor Load Balance and Performance Charts: A detailed performance
analysis for each CPU in the system.
• Disk Volume Performance Analysis: A detailed performance analysis for each
volume on the system.
• Cache Performance Analysis: A detailed volume-by-volume cache performance
analysis.
• Disk Subprocess Analysis and Recommendations: A detailed analysis of the
number and activity of each logical volume’s disk subprocesses.
• Processor/Disk Configuration Diagram: A combination of physical and
performance data laid out to represent the system hardware configuration.
• IPC Traffic Analysis: A detailed performance analysis for each CPU in the system.
• “After Primary Changes” Sections: If GPA recommends moving primary disk
processes, these sections are output by GPA. They predict the performance of the
system after the moves.
• Process Move Recommendations: A list of process moves aimed at leveling CPU
utilizations or memory demands.
• Estimated System Performance After Tuning: A prediction of how the system
would perform after implementation of the GPA tuning recommendations.
• GPA Analysis Statements: A set of text statements detailing GPA findings and
recommendations.