Agilent Technologies J3972A User's Guide Page 478

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Displaying Statistics
When you run the Historical Statistics application, NetMetrix displays a
window containing plot or line graphs of network statistics for the study
you chose (hourly, daily, or monthly).
When a LanProbe is powered on, it automatically collects network statis-
tics for certain default time intervals or studies. These statistics are
retained in the agent’s memory as follows: The 5-second study is retained
for 5 minutes; the 30-second study for 1 hour; and the 30-minute study
for 3 weeks.
For long-term analysis, you can configure the NetMetrix collector
daemon to save statistical data in files on your management station. If
data files are available, Historical Statistics uses them automatically.
For information on configuring data collection, refer to the Agent Man-
ager chapter in Data Collector Reference.
The maximum time frame (duration) that can be displayed depends on
the study, the type of agent, and whether data files are available. In addi-
tion, if the application is left running, new statistics are added to the
graph, allowing for the display of longer time frames, even if data files
are not configured:
For the hourly study (5-second intervals), up to 4 hours of data can be
shown if the graph is left running.
For the daily study (30-second intervals), up to 36 hours can be shown
if the graph is left running or data files are available.
For the monthly study (30-minute intervals), up to 12 months can be
shown if the graph is left running or data files are available.
If data files are available, you can display longer time frames by using
the pmReporter command’s –b switch.
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