The timeline events mode displays all events triggered while making a recording. Use the timeline event reference to learn more about each timeline event type.
Certain details are present in events of all types, while some only apply to certain event types. This section lists properties common to different event types. Properties specific to certain event types are listed in the references for those event types that follow.
Property
When is it shown
Aggregated time
For events with nested events, the time taken by each category of events.
Call Stack
For events with child events, the time taken by each category of events.
CPU time
How much CPU time the recorded event took.
Details
Other details about the event.
Duration (at time-stamp)
How long it took the event with all of its children to complete; timestamp is the time at which the event occurred, relative to when the recording started.
Self time
How long the event took without any of its children.
Used Heap Size
Amount of memory being used by the application when the event was recorded, and the delta (+/-) change in used heap size since the last sampling.
For Layout records, the stack trace of the code that caused the layout to be invalidated.
Nodes that need layout
For Layout records, the number of nodes that were marked as needing layout before the relayout started. These are normally those nodes that were invalidated by developer code, plus a path upward to relayout root.
Layout tree size
For Layout records, the total number of nodes under the relayout root (the node that Chrome starts the relayout).
Layout scope
Possible values are "Partial" (the re-layout boundary is a portion of the DOM) or "Whole document".
Elements affected
For Recalculate style records, the number of elements affected by a style recalculation.
Styles invalidated
For Recalculate style records, provides the stack trace of the code that caused the style invalidation.
This site uses cookies to deliver and enhance the quality of its services and to analyze traffic. If you agree, cookies are also used to serve advertising and to personalize the content and advertisements that you see. Learn more about our use of cookies.