The Performance page provides detailed performance information about an overall site, and each circuit at that site. It’s useful because it displays specific connectivity problems and the times they occur. It accurately identifies latency, loss, jitter, and other symptoms of circuit degradation.

The information is beneficial when troubleshooting issues with ISPs, showing precisely where the performance issues are, when they occurred, and how long they lasted. It also helps visualize our QoS, giving additional insight into circuit performance beyond bandwidth, loss, and latency. It shows the mixture of traffic classification that contributes to traffic management on the WAN circuits.

Navigating the information on the graphs

For all graphs available on the Performance page, use these navigation methods for interpreting and drilling down into the information:

Traffic above the baseline is download traffic.

Traffic below the baseline is upload traffic.

Hover over the data with your mouse pointer to see detailed information about a specific point in time, such a data loss, latency, jitter, upload and download speed, the type of traffic travelling over a circuit, and more.

Move the slide bar circle below the graph left and right to see information for a smaller time range.

shift+click+drag to select a part of a graph to see a smaller time range. This produces the same results as using the slide bar.

Controls

Select the graphs you want to see (and unselect those you don’t want visible), and the date range for the data. By default the data shows information for the past hour. You can select a custom date and time range, or select from a list of available options to see data from that specific timeframe.

The Zoom with mouse wheel option determines the behavior of the center mouse wheel. If this option is disabled, the center mouse wheel scrolls through the page. If enabled, the center mouse drills down into a graph when positioned on a graph. Similar to the shift+click+drag navigation option.

Overall

Overall circuit performance at the site.

Throughput

This graph gauges a site's cumulative traffic consumption. It shows average bandwidth usage along with spikes during peak times.

Latency and Loss

This graph displays the average latency the site experiences, and highlights occurrences of loss. The Latency is shown in green, and is measured in milliseconds (MS) along the left side of the graph. The Loss percentage is shown in Red, and is measured along the right side of the graph.

Individual circuit graphs (WAN 1, WAN 2, etc.)

Each circuit at the site is graphed in three categories: Throughput, Capacity, and Health Alarm Levels.

Throughput

This graph shows how much of the circuit's bandwidth is used, and at what times. For example, it can show when a traffic spike in the Overall Throughput graph traverses the WAN 1 Circuit.

Capacity

This graph maps the detected bandwidth of the circuit.

Health Alarm Levels

This graph is the most useful for troubleshooting. Bi-directional jitter, latency, and loss are plotted, along with the times they occur. An example of using this graph is in determining VoIP problems. VoIP is sensitive to jitter more than other forms of circuit degradation. If calls are choppy and one of the site's circuits exhibits high levels of jitter, you can isolate that circuit when testing, examine each hop in the route and significantly expedite the resolution of the issue.

Get more information about the Performance page

For more details about using the information on the Performance page, see Using the Performance Page.