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73 — Graphing statistics

73-4 December 2009 Alcatel-Lucent 5620 Service Aware Manager, Release 7.0 R6

Statistics Management Guide 3HE 04551 AAAE Ed. 01

Choosing the Y-axis

The statistics graph can have one X axis and two Y axes. The X axis is a time scale

and the Y axis is the scale for data values. You can choose a Y axis from the

drop-down menu in the configuration panel.

One plotter can simultaneously plot up to four counters. Plotters can have

independent Y axes on the left and right of the graph. Any counters can be assigned

to a Y axis.

Statistics counters

Up to four statistics counters can be plotted in a graph.

A statistics counter name that includes the word “periodic” is a counter that records

the difference between the current and previous counter values. For example, when

the 5620 SAM polls the Transmitted Octets counter, it subtracts the counter value

from the previously polled value and stores the result in the Transmitted Octets

Periodic counter. A non-periodic statistics counter contains a cumulative value.

Real-time statistics data collection

The Statistics Plotter has a configurable default polling interval and a retention

period for real-time statistics collection. The retention period is configurable from

the User Preferences form. The retention period specifies how long the 5620 SAM

collects real-time statistics before it deletes the oldest sample. At a sampling rate of

10 s, the plotter stores 8640 samples per counter in one day. See Procedure 73-1 for

more information about configuring the global statistics graph parameters. You can

also specify a polling interval that differs from the default interval. See

Procedure 73-2 for more information.

The detail and data panels indicate when a real-time statistic is missing from a plot.

The detail panel plot markers in the plot list panel Markers column change from solid

to dark grey with the marker color as the border. The data panel displays N/A or Data

Missing instead of a data value.

• N/A indicates that events are skewed. For example, there is data event plot for

plot 1 and plot 2 at time T1, and a data event plot for plot 3 and plot 4 at time T2.

Accordingly, the table row displays N/A for plot 3 and plot 4 at time T1, and for

plot 1 and plot 2 at time T2. N/A is displayed whenever the same graph plots

counters from different classes or different NEs.

• Data Missing indicates an error during statistics collection. Data Missing is

displayed when an NE reports an error or when the polling interval elapses before

the response to a previous poll arrives.

You can remove a plot at any time during real-time statistics collection. The plot

disappears immediately from the detail panel and data panel. See Procedures 73-2

and 73-3 for more information.

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