# optimization
## method
- flutter profiling
- [CPU Profiling](https://medium.com/bancolombia-tech/performance-in-flutter-what-is-it-how-is-it-measured-how-is-it-interpreted-how-is-it-improved-8b5db600eb88)

- performance overlay
- widget rebuild tracker
-
- devtools memory tab
- devtools timeline

[performance](https://docs.flutter.dev/perf/faq)
## time
- jank
- [memory test](https://github.com/flutter/flutter/wiki/How-to-write-a-memory-test-for-Flutter)

- NEON
- [Introducing NEON Development Article](https://developer.arm.com/documentation/dht0002/a/Introducing-NEON/What-is-NEON-)
- [arm perforance lib](https://developer.arm.com/Tools%20and%20Software/Arm%20Performance%20Libraries#Technical-Specifications)
## space

# 音檔測試

15秒
| size | time | acc |
| -------- | -------- | -------- |
| tiny | 0:09 | |
| base | 0:45 | |
| small | 0:28 | |
| medium | | |

30秒
| size | time | acc |
| -------- | -------- | -------- |
| tiny | 2:14 | 79.8 |
| base | 3:35 | 97.0 |
| small | 9:15 | 97.9 |
| medium | | |

- cache

[](https://medium.com/@fluttergems/mastering-dart-flutter-devtools-cpu-profiler-view-part-6-of-8-31e24eae6bf8)