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使用的流量与电池消耗的问题

信息

This article is about AdGuard for Android, a multifunctional ad blocker that protects your device at the system level. To see how it works, download the AdGuard app

On Android devices running OS 6 and earlier, built-in statistics often attributed high data and/or battery usage to AdGuard. This was because AdGuard counted all the traffic it filtered from various apps. As a result, AdGuard's share of total data and battery usage was overstated, while other apps were understated.

With Android 7, however, this scenario has improved. Now the data reflected in Android's built-in data usage statistics is very close to reality, although there are minor discrepancies in the battery usage data.

However, AdGuard users can always get a true picture of the situation on the Battery usage screen.

电池使用情况​

You can access it by navigating to Statistics → Battery usage.

电池统计 *mobile_border

Inside you will find a chart that shows the AdGuard battery resource consumption within the last 24 hours, with an option to get more detailed hour-to-hour data by tapping on the chart. 除此之外，还有相关数据的信息以及简短技术说明。

AdGuard 真实电池消耗是多少？​

First, let us lay down a bit of theory and links with necessary data.

  1. Android derives traffic consumption judging on so-called Power Profile, which is given by every manufacturer: https://source.android.com/devices/tech/power/values.html

  2. Main part of Power Profile is a set of values in mAh which define battery consumption for every component of the device: https://source.android.com/devices/tech/power/values.html

    For example, from the table above:

    wifi.active= 31mA additional consumption in mAh caused by WiFi data exchange.

    radio.active= 100-300mA additional consumption in mAh caused by data exchange over Mobile network.

    cpu.active= 100-200mA additional consumption in mAh caused by CPU load.

  3. AdGuard by itself almost doesn't consume any traffic, so for the sake of evaluating power consumption let's get rid of 'Mobile/Wi-Fi packets' and stick to 'CPU'.

    Formula to calculate the consumption:

    “CPU TIME (ms)” X “cpu.active” / (60 60 1000) = “POWER USE mAh”

    Let's put real numbers into this formula.

    Let's take CPU total from the second screenshot and convert into milliseconds: 506000

    A coefficient cpu.active for 2GHz will be roughly equal to 225mAh

    Final result:

    506000 225 / (60 60 * 1000) = 31,625mAh

结论​

Real consumption is several times less than it is shown in Android statistics. Instead of 220mAh it should be somewhere around 31-40mAh. On the other hand, browser's consumption should be not 66mAh, but ~200mAh.