COMNET III

COMNET III Reports and Statistics
The representative value for the interval may either be the
mean value (the average over the interval) or the peak value
(the maximum value over the interval).
This option has two benefits. First, it provides more
informative statistics especially for the minimum, maximum,
and percentiles, by collecting statistics of observations of
short-term results rather than the raw observation. For
example, it provides a mechanism to find the minimum or
maximum of the short-term average link utilization or the
short-term peaks of message delays or VC burst sizes.
Monitor peaks in interval
Add real time plot
The second benefit is that it reduces the size of savedobservation
files by saving just one sample per interval rather
than the potentially large number of events or state changes
within that interval. This allows the simulation to run faster
and lessens the size of the observation file.
The Mean Interval observations recorded and summarized
depend on the checkbox Monitor peaks in interval. If this
checkbox is off, then the observations will be the average of
the monitored values during the interval. This observation is
especially useful for monitoring utilizations of links or
processors.
If the checkbox is on, the observations will represent the peak
value of the monitored quantity during the interval. This
option is especially useful for monitoring buffer sizes and
burst sizes. This option is useful for monitoring buffer sizes
where the peak value (no matter how rare) is related to traffic
loss.
Add real time plot. This option presents a plot that comes up
during the simulation. This plot is updated by each
observation that is collected into the statistics. These
observations are governed by the mean-interval and monitorpeak
options of the statistics requests. This plot option does
not require observations to be saved to a file, but it plots the
same information that would be saved to the file.
1.1.2 Viewing Requested Statistics
After running the simulation, use the Statistics button, again, to View and then Plot the selected
statistic. After bringing up the plot window by clicking on the Plot button, use Plot on the
menubar to obtain histograms, percentiles, or plots of smoothed data.
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