Alarmmanager fires first time but doesn't repeat

Question

I want an Alarmmanager to fire first time after 2 Seconds and then every 10 Sec.

It doesn't fire the first time exactly 2 seconds later. Something between 5 and 10 sec later. And it doesn't repeat at all.

Here is my Code:

Alarmmanager:

Intent intent = new Intent(this, BackgroundService.class);
final PendingIntent pendingintent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);

final AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC, System.currentTimeMillis() + 2 * 1000, 10 * 1000, pendingintent);

Manifest:

<receiver android:process=":remote" android:name=".BackgroundService"/>

BackgroundService.java:

public class BackgroundService extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d("BackgroundService", "BackgroundService onReceive");
    }
}

Answer 1

Got it:

The IDE says: The 3rd value will be forced up to 60000 (1 Min) to save battery. But I never waited so long, so it looked like it doesn't even repeates.

Snap is here