Reviews of your shipped iOS app say it occasionally stops responding to touch for a few seconds. When it won't reproduce in the office, how do you get your hands on the stack from the moment the main thread stalled?
Subscribe to MetricKit's MXHangDiagnostic to receive the main thread call stack from the moment a stall passed 250ms on real users' devices and upload it to your server, check in the Xcode Organizer Hangs report which version and screen the same stack was caught in and how often, then verify the code path that stack points to locally.
Performance and debuggingShort answerAdvanced
Users report that a certain screen occasionally freezes for about a second, but you can't…
#hang #main-thread #metrickit
Performance and debuggingMultiple choiceExpert
Which of these can an app actually receive through MetricKit (MXMetricManager)? Select…
#hang #metrickit
Performance and debuggingShort answerAdvanced
You want to add a feature to your in-house APM that captures a stack whenever the main…
#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