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    Mobile Platform as a Service:Lag report

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    Mobile Platform as a Service:Lag report

    Last Updated:Jun 15, 2026

    Lag occurs when the main thread takes longer than a threshold (2.25 seconds for Android, 2 seconds for iOS) to complete a method. When lag occurs, the client uploads lag information in real time. The data appears on the console within seconds to minutes.

    Important

    Before you can view the lag report, you must integrate and instrument the client software development kit (SDK). For more information, see Integrate an Android client and Integrate an iOS client.

    The lag report shows the number of device stutters, stutter rate, affected devices, and details for each lag category.

    To view the lag report, follow these steps:

    1. Log on to the console, click Products and Services > Mobile PaaS, and select an application.

    2. In the navigation pane on the left, click Mobile Analysis Service > Performance analysis > Lag report.

    3. Select conditions such as platform, version, and time to filter the lag analytics data.

    lag overview

    Displays lag data per minute and shows trends in a line chart.

    • Lag count: Total number of stutters on monitored devices. Lag is monitored on a 10% sample of all devices.

    • Lag count: Total number of stutters on devices with lag monitoring enabled. The sample rate for lag monitoring is 10%.

    • Lag rate: Lag count divided by the total number of page views (PVs) on devices with lag monitoring enabled.

    • Affected devices: Number of unique users who experienced lag.

    Detailed lag data

    Provides a report of lag data for the selected date. Logs are categorized and counted based on the cause of the lag.

    • Lag count: Total number of lags of the same type (total number of lag logs).

    • Accounts: Distinct user IDs (counted by userID field in the logs) for lags of the same type. If no userID field is available, the value defaults to 1.

    • Devices: Distinct device IDs (counted by device ID in the logs) for lags of the same type. If no device ID is available, the value defaults to 1.

    • Version: Version number in the lag log file.

    • Details: Lag call stack from the log file.

    Note

    Stack information is available in the detailed lag reports for Android devices but not for iOS devices.

    lag category details

    In the lag category list, click an entry in the Details column to view the fault details for that lag category. The details page includes fault group information and fault samples.

    • Fault group:

      • Lag count: Total number of stutters in the category, equivalent to the number of lag logs.

      • Affected devices: Number of unique devices on which this category of lag occurred, deduplicated by device ID.

        Note

        If the device ID is empty or "-", the device will not be counted.

      • Proportion of affected devices: Devices affected by this lag category divided by the total number of devices that experienced any lag.

      • Device models: Percentage of stutters per device model, sorted in descending order of lag count.

    • Error sample: Shows device details, log details, and other information. You can switch between samples by clicking the <and> button.

      • Device details: Shows the Device ID, Platform, User ID, Device model, and Operating system version.

      • Log details: Displays the lag log for the current sample and provides a Data Exporting option. For more information, see lag instrumentation.