200 ms
4 0 ms
600 ms
800 ms
1000 ms
1200 ms
1400 ms
FPS
CPU
NET
315 ms
320 ms
325 ms
330 ms
335 ms
340 ms
345 ms
350 ms
• Frames s
8.3 ms
8.3 ms
8.3 ms
8.3 ms
8.3 ms
Experience
Layout Shift
Layout Shift
Lay...ift
Layout Shift
v Main – https://googlechrome.github.io/deytools-samples/jank/
Task
Task
Task
Task
Task
T...
Anima...ired
| Animation...me Fired
Animation...me Fired
Animation...ame Fired
Animation...ame Fired
A...
Funct... Call
Function Call
Function Call|
Function Call
Function Call
F...
app.update
app.update
• Raster
• GPU
II
• Chrome_ChildIOThread
Compositor
| |
• ThreadPooIServiceThread
Summary
Bottom-Up
Call Tree
Event Log
Range: 311 ms – 351 ms
20 ms
Scripting
15 ms
Rendering
4 ms
Painting
41 ms
1 ms
System
1 ms
Idle
41 ms
Total