Find Jank with Flutter's CPU Flame Charts
Source: docs.flutter.devintermediate
A flame chart visualizes CPU usage, showing which function calls are slowest. Use it to diagnose jank in Flutter. The footgun is misreading the x-axis: it's for sorting calls alphabetically, not showing execution order.
A flame chart is like a geological survey of your app's CPU time. Wide layers show which functions consume the most time, helping you pinpoint "jank". Use it in Flutter's DevTools to optimize slow build methods or heavy computations. The footgun: the horizontal axis is not a timeline; it's for alphabetical sorting of call stacks, not execution sequence.
Read the original → docs.flutter.dev
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