FrameTiming class

Time-related performance metrics of a frame.

If you're using the whole Flutter framework, please use SchedulerBinding.addTimingsCallback to get this. It's preferred over using Window.onReportTimings directly because SchedulerBinding.addTimingsCallback allows multiple callbacks. If SchedulerBinding is unavailable, then see Window.onReportTimings for how to get this.

The metrics in debug mode (flutter run without any flags) may be very different from those in profile and release modes due to the debug overhead. Therefore it's recommended to only monitor and analyze performance metrics in profile and release modes.


FrameTiming(List<int> timestamps)
Construct FrameTiming with raw timestamps in microseconds. [...]


buildDuration Duration
The duration to build the frame on the UI thread. [...]
rasterDuration Duration
The duration to rasterize the frame on the raster thread. [...]
totalSpan Duration
The timespan between build start and raster finish. [...]
hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited


timestampInMicroseconds(FramePhase phase) int
This is a raw timestamp in microseconds from some epoch. The epoch in all FrameTiming is the same, but it may not match DateTime's epoch.
toString() String
Returns a string representation of this object.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]


operator ==(dynamic other) bool
The equality operator. [...]