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156 Netfinity and Windows 2000 Integration Guide
Figure 149. A sample trend graph
The trend graphs plot the average value of the selected monitor for all of the
systems you have chosen.
For each time period, there is a vertical line:
Data from individual systems is represented as dashes.
The length of the vertical line represents the range of all the selected systems
utilization data points.
Clusters of points on the line represent a concentration of data.
Capacity Manager will automatically switch a graph to a trend graph when the
number of systems selected exceeds a specified number. That number is set by
clicking Edit > Settings > Graph and changing the field Maximum systems to
graph individually. The default is 3. Capacity Manager can graph up to nine
systems on the chart at once. Any number above nine is automatically trended.
8.7 Performance analysis
Performance analysis is a new artificial intelligence feature that probes for
bottlenecks in server hardware performance, diagnoses the problem, and
suggests ways to improve performance. The performance analysis algorithm is
based on the experiences of experts. The algorithm can find many but not all
system problems. A minimum of a months worth of data is needed to make
accurate predictions.
The algorithm monitors four server functions:
Memory
Disk subsystem
CPU
Network
Data from
individual
systems
Average for
all systems
Line length
represents
the range of
systems for
that data
point
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