A scatter plot shows all data points collected by the selected agents, including any reported errors. Scatter plots use no aggregation in the graph or the matching data table.
Scatter plots help you see trends as well as outlier measurements, so you can quickly see if performance problems are limited to specific agents, times of day, etc. Scatter plots show errors as well as successful measurements. They can be set to show only error data points.
A scatter plot can include a maximum two-week period, and a maximum of 8000 data points.
Click the Table tab to display a table with all the data points for the time period included in the scatter plot. As with the scatter plot graph, you can drill down for more detail by clicking a Page Detail link or an Error Detail link.
You can click on any column header to sort the table in either ascending or descending order based on the values in the column.
Filtering data shown in scatter plots
You can filter the data displayed for web transaction measurements by outcome - that is, whether the data points displayed are successful measurements, errors, or content errors.
Click a measurement type in the list to filter out that measurement type from the scatter plot. Click again to include it. By default all data points are included.
For Mobile Web Monitoring measurements you can also filter data points by Devices, Networks, or Carriers.
This feature is useful for measurements scheduled on device and carrier groups, enabling users to view any differences in data distribution between carriers or devices at a glance. Likewise, if data points end up on different network types (for example, LTE, 3G) due to changes in connection strengths, you can filter by these.
Viewing multiple measurements on one scatter plot
You can include multiple measurements on a single scatter plot, with each measurement indicated by a different color. A color key in the lower left explains the mapping of colors to measurements.
Note that while it's possible to include measurements from different services (such as Application Perspective and Transaction Perspective) on the same scatter plot, the differences between these services make measurement comparisons difficult.
Note on total measurement time
When viewing detail for any measurement, content error, or other error, Total Measurement Time may not equal the sum of the individual component measurement times for a variety of reasons. For example, in the case of a page timeout, there content download time may be zero, but the Total Measurement Time will include the time recorded before the measurement timed out.
Comparing scatter plot data points
You can select any two data points in a scatter plot to compare their performance.
To perform a data comparison:
Click the compare button.
Select the two data points you want to compare.
The measurement data for the two data points will be displayed in a waterfall graph.
The table above the waterfall shows the differences between the first data point selected and the second. Green values indicate the second data point had improved performance; red values indicate values that are worse for the second data point.
Performance graph and summary
The scatter plot performance graph shows each measurement (and error) as a dot or symbol along a time dimension. Clicking a data point opens a Performance Summary.
Content capture in Transaction Perspective measurements
For Keynote Transaction Perspective measurements, drilling down on error data points in the scatter plot allows you to view detailed measurement data along with screenshots of transaction pages.
There are two levels of content capture available for different types of transaction accounts:
- For non-premium Transaction Perspective accounts, a screenshot is displayed of the first transaction page with an error.
- If your Keynote account includes Web Content Diagnostics (WCD), snapshots of all the pages of the transaction are captured and displayed, whether or not they had errors. Also, response headers are displayed for each transaction page. (Page snapshots and headers are not captured or displayed if an error prevented the page from being measured.)
Accessing screenshots for error pages
To access screenshots for measurements with errors, click a red error icon in the scatter plot graph. Depending on whether you have subscribed to WCD or the non-premium versions of Transaction Perspective, the drill-down behavior varies:
For non-premium Transaction Perspective measurements
Clicking an error icon in the scatter plot graph with displays an error detail graph.
Drill-down on Error for Multi-Page Transaction (Non-Premium Mode)
Clicking the graph bar with the error displays a page containing the detailed error data along with a screenshot of the first page in the transaction containing an error.
For WCD Transaction Perspective measurements
Clicking an error icon in the scatter plot graph brings up a page with an error detail graph and the screenshots for each page in the transaction.
You can click any of the screenshots to display a larger version of the screen image.
You can also click View Headers to see the response header associated with each page of the transaction.
Content capture in Application Perspective measurements
If an Application Perspective measurement results in an error, drilling down on the error data point opens a detail graph. This graph page contains links that enable you access the HTML text, rendered HTML, and HTTP header for the page for which the error was reported.
Content capture in Mobile Web Perspective measurements
Mobile Web Perspective measurements allow drill-down on each data point in a scatter plot to open a detail graph. This graph page contains links that enable you access the HTML text or rendered HTML, and to download the captured data for the measurement.
Drill into the waterfall
Click a data point in the scatter plot, or in the Table tab, the Page Detail or Error Detail link to see page-level data for the data point. From there, you can click on a page to launch the waterfall graph.
For information on accessing PurePath trace information from the waterfall graph of a data point, check the PurePath Measurements page.
For information on drilling down into Mobile App Monitoring data points, see MAM App Activity.
Transaction Perspective measurements made with Internet Explorer 9 include a new set of components, which are displayed on the Browser Events tab. These components are described here: