profile instruments debugging

To debug and profile your app using Instruments, particularly focusing on power usage and CPU performance, you can refer to the following sessions from WWDC:

1. Profile and optimize power usage in your app: This session discusses using the Power Profiler in Instruments to record power metrics and visualize them to identify issues such as increased CPU usage, which can lead to slower performance and reduced battery life. You can learn how to connect your device, use the Power Profiler, and analyze the power trace. For more details, you can check the session Profile and optimize power usage in your app (01:52).

2. Optimize CPU performance with Instruments: This session covers using the CPU Profiler and Time Profiler to analyze CPU usage. It explains how to launch Instruments from Xcode's Test Navigator and choose the appropriate profiler to minimize overhead and accurately capture performance data. For more insights, see Optimize CPU performance with Instruments (08:50).

3. Improve memory usage and performance with Swift: This session highlights using Instruments to profile memory usage and performance, focusing on allocations and time profiling. It provides guidance on how to use the Time Profiler to understand where your app is spending its time. You can explore this further in Improve memory usage and performance with Swift (02:25).

These sessions provide comprehensive guidance on using Instruments for profiling and debugging, helping you optimize your app's performance and power usage.