Owner's Manual

Active Performance Monitor 777
Click Save to preserve this monitor. Once you save it, it should appear in the screen Monitors on
page 770.
Calculated Metrics
This screen configures monitor metrics. Each metric defines an additional data value provided by
the monitor
Figure 32-5. Monitor Editor—Metrics
If necessary, you can define expressions to calculate additional attribute data for dashboard views or
reports so it appears in a more useful form.
For example, to create a calculated metric of the difference of attributes
A and B called Difference
(for example
Requests minus Discards ), you could enter a formula: A-B . This would then be an
attribute available for reports or dashboards. In reports, you can only see a single attribute, but the
calculated attributes’
Average Min, Max and To t a l are automatically available for reporting. See
Operators on page 778 for a list of available operators for these calculations.
Collected attributes appear in the
Metric Attribute Legend portion of the screen and are
automatically assigned a letter usable in formulas (the assigned formula code). Only collected
attributes are available for creating additional metrics. Click
Reassign to re-order the alphabetic
characters that stand for those attributes in metric formulas. Formulas are inspected and updated
accordingly as part of this operation.
CAUTION:
Reassign does not automatically update formulas in the metrics’ calculations, so click that button only
before configuring formulas, not after. If you do click after creating formulas, then existing formulas may
require edits after reassigning attribute symbols.