HP Capacity Advisor 7.2 User Guide

5. Create the second expression:
a. Click the arrow for the first drop-down list.
The Attribute Selection dialog box appears, opened to the CPU tab.
b. Under CPU Capacity, select Core Count, and click OK.
c. Click the arrow for the second drop-down list and select <=.
d. In the quantity selection box, press the up arrow twice to set it to 2 CORES.
The nested expression is now complete.
Attribute selection
Capacity Analysis provides a set of attributes, in various categories, that can be used in creating
custom queries. These attributes are located in the Attribute Selection dialog box, which is accessed
from the Analysis Query Definition page.
Attributes are used in two ways:
• When the Attribute Selection dialog box is launched from the Choose… button, it is used to
select the information displayed in a query's results. In this mode, any number of attributes
can be selected at the same time.
• When the Attribute Selection dialog box is launched from the Filter definition area, it is used
to select a single attribute in a relational expression. As you define a query, you can add
additional expressions and attributes.
The table below provides descriptions of the most common attributes.
The tables that follow show all the available attributes, organized by tab and section.
Table 13 Common attribute descriptions
DescriptionAttribute modifier
Peak utilization shows the system's highest resource requirements for any five-minute period during
a selected interval. Use peak utilization measures to determine when to size a system to fully
support peak resource usage (for critical applications or during critical business periods, for
example).
Peak
Use 15-minute sustained utilization to determine when resource utilization is long-lived, rather than
short-lived peaks during a 15-minute period. When you know a system and its workload require
sustained resource use, you can size the system to support this demand.
15-Min
90th-percentile utilization shows the resources required to satisfy demand 90 percent of the time.
Use 90th-percentile measures to get a good sense of the long-term resource requirements for the
system, or to analyze the potential impact of meeting demand less than 100 percent of the time.
90%ile
Use average utilization metrics to determine general resource requirements over a selected interval.Avg
Creating custom analysis queries 115