Performance Trend Chart

The Performance Trend Chart provides an easy way to spot trends in the performance of your web pages - are they getting faster or slower? Larger or smaller? By how much?

The chart is opened using one of the following:

1. Press the pull down menu at the upper right corner of the Testcase Editor panel, select Chart, then select the type of chart (shown below).
2. Press the Chart button on the main toolbar, then select the type of chart.
3. Select Edit->Chart on the main menu bar, then select type of chart.

This example shows the chart for a testcase called "Web Performance".

• The page durations are shown on the range axis (y-axis)

• The 5 replays and the original recording are shown on the domain axis (x-axis)

• In the table below the chart, the check boxes have been used to ignore the data from 3 pages

From the chart, you can see that the performance of one of our support pages has improved but our homepage has become slower.

Accessing the charts

The charts can be opened from the context menu for the testcase as displayed in the navigator or from the menu in the upper-right corner of the testcase editor:

Zooming in

The chart can adjusted to zoom in on specific parts on the range axis by dragging down over the area to be zoomed. This sample shows the result after zooming the range from 4.0 to 0.5 on the range axis:

Return to the full-scale chart by dragging up in the chart area or selecting Zoom Out from the pop-up menu.

Selecting Auto Range from the pop-up menu will return the chart to the original layout.

Print and export

The chart may be printed or exported using the pop-up menu on the chart. Printing will automatically scale to the full size of the page. Most charts will most closely resemble what you see on the screen when the landscape orientation is used in the printer configuration options (platform and printer dependent). Exporting the chart will result in an image approximately the same size (in pixels) as the display on the screen.