Mobile Platform as a Service:Performance logs

Performance logs for Mobile Analysis on Android include the following:

• Startup time log

• Lag log

• Stuck log

You can Log in to the mPaaS console and choose Mobile Analysis Service > Basic analysis to view the startup duration; and log in to the mPaaS console and choose Mobile Analysis Service > Performance analysis to view lag and stuck reports.

Startup speed instrumentation

Application startup duration = Time when the method is called - Time when the application starts.

To instrument for startup speed, call the following method in the onCreate() method of the home page Activity.

MPLogger.reportLaunchTime(Context context);

Stuttering instrumentation

Stuttering occurs when the Android main thread takes longer than 2.25 seconds to execute a method. The stuttering threshold varies depending on the APK package type:

• If the APK is a debug package, the stuttering threshold is 0.75 seconds. This lets you quickly detect potential stuttering issues during debugging.

• If the APK is a release package, the stuttering threshold is 2.25 seconds.

Enable stuttering monitoring

Method 1

To enable automatic stuttering monitoring, your interface must inherit from the BaseActivity, BaseFragmentActivity, or BaseAppCompatActivity class provided by mPaaS.

Method 2

You can manually call the relevant APIs in the lifecycle methods of the Activity. For example:

import android.app.Activity;
import android.app.Application;
import android.os.Bundle;

import com.mpaas.mas.adapter.api.MPLogger;

public class MPLifecycle implements Application.ActivityLifecycleCallbacks {

    private int mVisibleActivityCount = 0;
    private boolean isBackground = false;

    @Override
    public void onActivityCreated(Activity activity, Bundle bundle) {

    }

    @Override
    public void onActivityStarted(Activity activity) {
        mVisibleActivityCount++;
        if (isBackground) {
            isBackground = false;
            // Called when the application returns to the foreground.
            MPLogger.monitorAppForeground();
        }
    }

    @Override
    public void onActivityResumed(Activity activity) {
        // Update the Activity context.
        MPLogger.monitorActivityResumed(activity);
    }

    @Override
    public void onActivityPaused(Activity activity) {
    }

    @Override
    public void onActivityStopped(Activity activity) {
        mVisibleActivityCount--;
        if (mVisibleActivityCount <= 0) {
            isBackground = true;
            // Called when the application is sent to the background.
            MPLogger.monitorAppBackground();
        }
    }

    @Override
    public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {
    }

    @Override
    public void onActivityDestroyed(Activity activity) {
    }

}

Stuttering monitoring collects all data for debug APKs. For release APKs, monitoring is based on sampling with a sample rate of 10%.

ANR instrumentation

An ANR typically occurs when the main thread is unresponsive for more than 5 seconds.

To enable ANR monitoring, see Enable stuttering monitoring.