Each DebugBear result contains a timeline of work done on the page main thread.
The timeline only shows work done on the main thread of the page, so CPU tasks in iframes are not included.
DebugBear CPU timeline
You can find the CPU timeline on the Overview tab.
Combined with the filmstrip you can see if CPU processing is delaying your page load.
You can hover over each CPU tasks to see:
- the type of processing
Note that tasks with a duration of less than 10ms are not included in the CPU timeline.
Overall CPU processing breakdown
The Performance tab also provides an overall breakdown of CPU main-thread work on the tested page: