Dashboards > Monitor Dashboards > Monitor Runs > Waterfall

Run View and Waterfall

AlertSite tracks the page load time and network activities for all monitor steps, helping you analyze your website performance. You can access the page loading timeline and detailed timing data from the Monitor Runs dashboard:

  1. Select a monitor and time frame.
  2. Expand a run.
  3. Click next to a step.

Understanding the Data

Monitor and Step Info

The header provides high-level information about the page that was loaded.

Waterfall header

Item Description
Monitor The monitor name.
Step The step name (for multi-step monitors).
Location The monitoring location that performed the test.
Date/Time The date and time of the test. All timestamps use the time zone specified in your AlertSite settings in Profile > Account > AlertSite Preferences > Timezone.
Total Objects The number of HTTP requests made for the pieces of content on the page (images, JavaScript, CSS, Ajax requests, and so on).
Payload The amount of data downloaded in order to load the page.
Response Time The base page response time (just the page’s HTML, without images, scripts or other files).

Views: All Domains, In-domain, Out-of-domain

The dropdown at the top right lets you filter the displayed page objects based on whether they are from your monitored server or from other servers. The filter affects all views – Summary, Waterfall, and Table.

Waterfall: Domain filter

All Domains – Show all resources.

In-Domain – Show only objects from the same domain as the monitored page.

Out-of-domain – Show only third-party content like analytics scripts, social widgets, CDNs, and so on.

Summary View

The summary view appears for monitors that use full page monitoring (the base page plus all referenced images, scripts, and other resources). It provides aggregate content statistics for the selected monitor step.

Waterfall: Summary

The Summary helps you answer the following questions:

To learn which objects have the most impact on your page load time, check out the Top 5 Slowest Objects and Top 5 Largest Objects charts. Clicking at the top right of a chart will expand it to show a full list of objects. Hover over each object to see its network timings in a tooltip.

Tip: You can copy URLs from the waterfall by clicking next to a URL.

Slowest objects (by response time)

At the bottom, the pie charts % of Objects and % of Payload show the content breakdown by domain and content type. Note that the content types are determined by file extensions, not MIME types.

% of Payload by Content Type

Waterfall Chart

The waterfall chart visualizes the page loading timeline and all network activities, from the moment when an HTTP request was initiated until the moment the last byte of the response was received.

Waterfall chart

The response time is broken down into categories, showing how much time is spent doing the following:

Vertical lines on the chart indicate page rendering events for DéjàClick and Selenium monitors:

For more information about these metrics, see Web Page Load Time.

Table View

The table view lists all resource URLs and the response time breakdown into individual network timings. The table is sortable so you can sort the URLs by individual network timings by HTTP status or alphabetically by URLs. Use the View dropdown at the top right to filter the content by in-domain or out-of-domain.

Waterfalll as a table

See Also

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