Overview

The Overview page provides a basic view of the recorded data in the selected profile. There is an interactive legend under the chart which makes you able to switch the particular channels or NPM metrics on and off (by clicking the channel icon). The upper pane allows switching between the Traffic, Packets, and Flows views which show the measured number of transferred bits, packets, and flows. If a continuous profile is selected, the page automatically refreshes every 5 minutes. This means there is always fresh data in your web browser. By clicking a chart, you can switch to the Analysis section where you can do further work with data.

There is a chart displaying a day overview at the top of the page. Below you can switch between the Traffic overview, Historical trends, and Statistics tabs. The first tab displays three charts with the week, month, and year overview. In the Historical trends tab you can find a comparison of the current traffic with historical values to help you to identify trends. The third tab displays tables containing the last 24 hours' statistics.

The Historical trends tab shows the current traffic chart compared with traffic from the same day and time from past weeks. You can select the time window you want to compare and a set of past weeks to compare with. You can select the data type (Traffic, Packets, Flows) in the first chart at the top of the page. In table below the chart, you can see the average values, 95th percentile, and comparison of any two datasets.

• 95th Percentile — The highest value remaining after the top 5% of a data set is removed (95% of your traffic is lower than this value).

• Average — Average of all traffic in the selected time interval and dataset.

• X Compared to Y (Absolute value) — $(aY - aX)$ where

  • $(aY)$ - Average of all traffic in the selected time interval and dataset for Y.
  • $(aX)$ - Average of all traffic in the selected time interval and dataset for X.

• X Compared to Y (Percentage) — $(1 - (aX/aY))$

The statistics tables display the summary and rate of flows, packets, transferred bits, and NPM statistics. Each row corresponds to one channel in the profile. Each row starts with a box and its color matches the chart data color of this channel.

The first table displays totals while the second one displays the average transfer rate per second. These values are automatically scaled to best suiting units k, M, and G (multiples of 1000). The columns Flows, Packets, and Traffic can be displayed in simple or extended mode by clicking the column's header. The extended mode shows a breakdown of particular network protocols (for example, TCP and UDP). The last table displays the average values of NPM statistics. The NPM statistics are recorded for every 30 seconds or 5 minutes regarding the profile type as an average of all related flows. The value in the table is taken as an average of all recorded values in the displayed interval. The extended mode shows maximal values of NPM statistics. The maximal value is computed as a maximum of all recorded values in the displayed interval.