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Stuck report

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A stuck event is categorized as either a launch stuck or an ANR stuck. When a stuck event occurs, the client uploads the relevant information in real time. This data appears on the console after a typical delay of a few seconds to a few minutes.

Type

Android

iOS

Launch stuck

The app fails to navigate past the splash screen or reach the home screen within 30 seconds of launch.

A method on the main thread does not complete within 5 seconds during app launch.

ANR stuck

Refers to a system ANR (Application Not Responding). For a detailed definition, see the official Android documentation on ANRs.

A method on the main thread does not complete within 5 seconds while the app is running.

The stuck report provides the total stuck count, stuck rate, and the total number of affected devices. You can also analyze detailed data for launch stuck and ANR stuck events separately.

To view the stuck report:

  1. Log on to the mPaaS console and select performance monitoring > crash analysis from the left navigation pane.

  2. Click the Stuck Report tab to view the analysis data.

  3. Filter the stuck analysis data by platform, app version, and time.

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    Note

    Stuck analysis data is currently supported only on the iOS and Android platforms.

Key metrics

This section displays a line chart of per-minute data for launch stuck and ANR stuck events. Click the Launch Stuck or ANR Stuck metric card to view the corresponding trend data.

Metric

Launch stuck

ANR stuck

Stuck count

The number of launch stuck events for the current day.

The number of ANR stuck events for the current day.

Stuck rate

The number of launch stuck events divided by the total number of app launches.

The number of ANR stuck events divided by the total number of app launches.

Affected devices

The total number of unique devices that experienced a launch stuck event within the specified time period, deduplicated by device ID.

The total number of unique devices that experienced an ANR stuck event within the specified time period, deduplicated by device ID.

Stuck categories

This section displays data for launch stuck and ANR stuck events for the selected date. Logs are grouped and aggregated based on the cause of the stuck event.

  • Stuck count: The total number of stuck events in the same category (the number of stuck logs).

  • Account count: The number of unique user IDs for stuck events of the same category, based on the user ID in the log. If the user ID is empty, the default value is 1.

  • Device count: The number of unique device IDs for stuck events of the same category, based on the device ID in the log. If the device ID is empty, the default value is 1.

  • Version: The app version recorded in the stuck log.

  • Details: The call stack of the stuck event recorded in the log.

Note

  • For Android devices, you can view the call stack information in the details of the stuck report. For a launch stuck event, the information includes the call stacks of all current threads to help with troubleshooting.

  • For iOS devices, call stack information is available only for non-launch stuck events. The stuck report does not provide call stack information for launch stuck events.

Stuck details

In the stuck categories list, click the Details link in the Actions column to open the details page for that error group, where you can view information about that specific category of launch stuck or ANR stuck events, including error group information and error samples.

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  • Error group:

    • Launch/ANR stuck count: The total number of stuck events in this category (the number of stuck logs).

    • Affected devices: The number of unique devices that experienced this type of stuck event, deduplicated by device ID.

    • Device ratio: The number of devices affected by this type of stuck event divided by the total number of devices that have experienced any stuck event.

    • Top 3 device models: The percentage of stuck events from the top three device models with the most occurrences.

  • Error sample: Displays information for the current sample, such as device details and log details. You can navigate between samples by using the < and > buttons.

    • Device details: Displays the Device ID, Platform, User ID, Device Model, and OS Version for the current sample.

    • Log details: Displays the stuck log for the current sample and allows you to export the data. For more information about log details, see stuck event tracking.

Note

If the device ID is empty or a hyphen (-), the device count is not incremented.

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