Dynatrace – RUM
Waterfall analysis – Dynatrace – RUM
Dynatrace captures user experience and performance data by monitoring individual user actions. Typically a user action begins with a click on an HTML control (for example, a button or link). The browser then loads the requested data, either by navigating to a new page or via an XHR/fetch call. JavaScript callbacks are then executed, the DOM tree is built or changed, and the web application is then once again ready for a new user action. Dynatrace Waterfall analysis view is the perfect tool for analyzing all such user action monitoring data in detail.
To access waterfall analysis for a user action
- Select Applications from the navigation menu.
- Select the application that provides the user action you want to analyze.
- Scroll down to the Top 3 user actions section of the Application page.
- Select a user action (or click View full details to access additional user actions).
- On the User action page, click the View analysis in waterfall chart button to open Waterfall analysis.
What data is displayed in the Waterfall analysis view?
Waterfall analysis view is primarily built around W3C timings. The view organizes the waterfall entries into three sections:
Document requests – Displays all content that is identified as the page load of the user action. This includes the initial HTML, as well as any other content that’s displayed in frames. Each entry contains the details that are captured by W3C navigation timings.
XHR requests – Displays all resources that were sent via XHR or fetch(). These entries contain all the details that are accessible through the W3C resource timings, in addition to the JavaScript callback execution time.
Resources – Displays all W3C timing details for all resources.
A user action may contain more than a single page load or XHR. Therefore, the initial request is highlighted in purple. The timings of the initial request are displayed as vertical event lines above the chart.
