---
# System prepended metadata

title: optimization
tags: ["google\_"]

---

# 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)