metrickit-diagnostics

Collect aggregated performance metrics and crash diagnostics from production devices using MetricKit. The framework delivers daily metric payloads (CPU, memory, launch time, hang rate, animation hitches, network usage) and immediate diagnostic payloads (crashes, hangs, disk-write exceptions) with full call-stack trees for triage.

Register a subscriber as early as possible — ideally in application(:didFinishLaunchingWithOptions:) or App.init. MetricKit starts accumulating reports after the first access to MXMetricManager.shared.

MXMetricPayload arrives approximately once per 24 hours containing aggregated metrics. The array may contain multiple payloads if prior deliveries were missed.

使用 MetricKit 收集和分析裝置上的效能指標和崩潰診斷。在設定 MXMetricManager、處理 MXMetricPayload 或 MXDiagnosticPayload、透過 MXCallStackTree 處理當機/掛起/磁碟寫入診斷、新增自訂路標指標或將遙測資料上傳到分析後端時使用。 來源：dpearson2699/swift-ios-skills。