Page overview and slow pages

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This topic describes the charts available on the page overview and slow pages dashboards. Use the page overview dashboard to monitor the overall health of your pages. Use the slow pages dashboard to analyze page samples that exceed the slow load threshold.

Page overview

Metric

Description

Slow load rate

slow load count / page load sample count.

FPS

Frame rate during page scrolling, normalized to a 60 Hz baseline.

Jank rate

iOS: Total jank duration / Total scrolling duration.

Android: Jank frame count / Total frame count.

Page list

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Slow pages

Use the slow pages tab to view pages with load times that exceed the slow load threshold. Based on your selected filters, this tab displays the slow load trend, slow load distribution, and slow load details.

Slow load trend and distribution

The default slow load threshold is 3000 ms. To change this value, click the Edit icon next to the threshold.

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Parameter

Description

Normal load count

Number of page load samples not exceeding the slow load threshold.

Slow load count

Number of page load samples exceeding the slow load threshold.

Slow load rate

slow load count / page load sample count.

Slow load details

The slow load details page displays the slow load trend and slow load distribution for a specific page to help you understand the context of slow loads.

The page load timeline chart shows the duration of default page breakdown phases and any configured custom phases. Hover over a phase block to view the Phase Name, Duration, and Start/End Time.

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