You want to add a feature to your in-house… - Performance and debugging

Performance and debuggingTencent

Building an in-app hang monitor

You want to add a feature to your in-house APM that captures a stack whenever the main thread stalls past a threshold. How would you detect jank from inside the app?

Your answer

Performance and debuggingShort answerAdvanced
Users report that a certain screen occasionally freezes for about a second, but you can't…
#hang #main-thread
Performance and debuggingMultiple choiceAdvanced
After a certain action the app freezes completely (no input response). Which of these are…
#hang #main-thread
Performance and debuggingShort answerBasics
Reviews of your shipped iOS app say it occasionally stops responding to touch for a few s…
#hang #main-thread
ConcurrencyShort answerIntro
In a UIKit screen you set label.text = result inside a network response callback, and som…
#runloop #main-thread

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