GPA Manual

Using GPA Information
Guardian Performance Analyzer (GPA) Manual—135081
4-4
System Performance Summary
A rundown of the global performance indicators for \NODEA (Example 4-4) shows that
the processor load balance on the system is poor and that there is excessive disk
queuing. The cache performance, with an average cache hit percentage of 83.2, is also
deficient. However, the overriding problem on this node is a serious shortage of memory,
as indicated by the node swap rate and the memory subsystem performance score
(discussed later).
The global performance indicators for \NODEB (Example 4-5
) show that the health of
the system is generally good except for processor load balance, which GPA considers
only fair, and disk volume queuing, which GPA found excessive in some cases. The disk
cache performance is acceptable, although it shows potential for improvement.
Figure 4-1. Response Time as a Function of CPU Utilization
Example 4-4. Global Performance Indicators for \NODEA
III. GLOBAL PERFORMANCE INDICATORS
EXCESSIVE DISPATCHING : NO INDEX LEVELS > 2 : NO
PROCESSOR LOAD BALANCE : POOR OVER UTILIZED DISK : NO
OVER UTILIZED NODE : NO CACHE FAULT DETECTED : NO
OVER UTILIZED CPU : NO TRANSIENT PROCESSING : NO
DISK VOLUME QUEUING : YES BLOCKED REQUESTS : NO
AVERAGE CACHE HIT % : 83.20% TOTAL CACHE CALL RATE: 25.00 /SEC
8
6
4
0.0
Response
Time
CPU Utilization
Maximum
recommended
utilization
level
004CDT .CDD