Mobile battery performance by identifying apps that disproportionally run background tasks that prevent mobile devices from sleeping

• US 9,229,522 B1
• Filed: 08/27/2013
• Issued: 01/05/2016
• Est. Priority Date: 08/27/2013
• Status: Active Grant

• Current Assignee: NortonLifeLock Inc.
• Original Assignee: Symantec Corporation (NortonLifeLock Inc.)
• Inventors: Tian, Xue Feng, McCorkendale, Bruce
• Primary Examiner(s): Brown, Michael J
• Application Number:
  US14/010,926
• Time in Patent Office: 861 Days
• Field of Search: 713/300, 713/320, 713/323, 713/324
• US Class Current: 1/1
• CPC Class Codes: G06F 1/169 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033
• CPC Class Codes: G06F 1/3218 of display devices
• CPC Class Codes: G06F 1/3246 by software initiated power-off
• CPC Class Codes: G06F 1/3265 Power saving in display device
• CPC Class Codes: G06F 11/2035 without idle spare hardware
• CPC Class Codes: G06F 11/3013 where the computing system is an embedded system, i.e. a combination of hardware and software dedicated to perform a certain function in mobile devices, printers, automotive or aircraft systems testing or monitoring of control systems or parts thereof G05B23/02
• CPC Class Codes: G06F 11/302 where the computing system component is a software system
• CPC Class Codes: G06F 11/3062 where the monitored property is the power consumption power management in a computing system G06F1/3203
• CPC Class Codes: G06F 11/3419 by assessing time
• CPC Class Codes: G06F 2201/81 Threshold
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06F 9/44 Arrangements for executing specific programs
• CPC Class Codes: G06F 9/4418 Suspend and resume; Hibernate and awake
• CPC Class Codes: H04M 1/72427 for supporting games or graphical animations
• CPC Class Codes: H04M 1/72463 to restrict the functionality of the device
• CPC Class Codes: H04W 52/027 by controlling a display operation or backlight unit
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Power consumption on a mobile computing device is reduced, by identifying and managing apps that prevent the mobile device from sleeping while the screen is off. It is detected when the screen is turned off and when it is subsequently turned back on. During the ensuing period of time, it is determined which specific apps prevent the mobile device from sleeping. This can take the form of identifying each specific app on the mobile device that has an unreleased wake lock at any point during the given period of time while the screen is off. The prevention of the device from sleeping while the screen was off is quantified by app according to power consumption, based on factors such as duration. Any apps for which the quantified prevention of the mobile device from sleeping while the screen was off meets a specific threshold are identified and managed.

Claims

1. A computer implemented method for reducing power consumption on a mobile computing device with a screen, a battery, a central processing unit (“

CPU”

) and a mobile operating system, by identifying apps that disproportionally prevent the mobile computing device from going into sleep mode while the screen is off, the method comprising;

detecting the screen of the mobile computing device being turned off;

determining which specific apps on the mobile computing device prevent the mobile computing device from sleeping while the screen is off;

subsequently to the screen having been turned off, detecting the screen of the mobile computing device being turned back on;

for each specific app determined to have prevented the mobile computing device from sleeping while the screen was off, quantifying the specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off, according to power consumption, wherein quantifying a specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off according to power consumption further comprises determining a corresponding length of time during which the specific app prevented the mobile computing device from sleeping while the screen was off, and quantifying the specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off in proportion to the corresponding length of time;

identifying at least one specific app for which the quantified prevention of the mobile computing device from sleeping while the screen was off meets a specific threshold; and

taking at least one further action to manage the at least one specific identified app'"'"'s prevention of the mobile computing device from sleeping while the screen is off.

2. The method of claim 1 wherein determining which specific apps prevent the mobile computing device from sleeping while the screen is off further comprises:

identifying each specific app on the mobile computing device that has an unreleased wake lock at any point during a given period of time while the screen of the mobile computing device is off.

3. The method of claim 2 wherein identifying each specific app on the mobile computing device that has an unreleased wake lock at any point during the given period of time while the screen of the mobile computing device is off further comprises:

reading a wake lock status of each app on the mobile computing device in response to detecting the screen of the mobile computing device being turned off;

identifying each specific app on the mobile computing device that is holding a wake lock when the screen of the mobile computing device is turned off;

detecting all wake lock acquisitions and wake lock releases by specific apps on the mobile computing device while the screen is off;

reading a wake lock status of each app on the mobile computing device in response to detecting the screen of the mobile computing device being turned back on; and

identifying each specific app on the mobile computing device that is holding a wake lock when the screen of the mobile computing device is turned back on.

4. The method of claim 2 wherein:

each wake lock is of a type which prevents the central processing unit from sleeping but allows the screen to be turned off.

5. The method of claim 1 wherein determining lengths of time during which specific apps had prevented the mobile device from sleeping while the screen was off further comprises:

determining a start and an end of each period of time that each specific app prevents the mobile device from sleeping while the screen is off, based on reading a system time counter a) when the screen is turned off, b) whenever a wake lock is acquired by an app while the screen is off, c) whenever a wake lock is released by an app while the screen is off, and d) when the screen is turned back on.

6. The method of claim 1 wherein determining lengths of time during which specific apps had prevented the mobile device from sleeping while the screen was off further comprises:

for at least one specific app, identifying multiple, separate periods of time during which the specific app prevents the mobile computing device from sleeping, wherein each of the multiple, separate periods of time occur during a single period of time when the screen is off; and

adding lengths of each of the multiple, separate periods of time to calculate a total length of time for the specific app.

7. The method of claim 1 wherein quantifying a specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off according to power consumption further comprises:

monitoring usage by the specific app of specific resources associated with power consumption, while the specific app is preventing the mobile computing device from sleeping while the screen is off; and

quantifying the specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off based at least in part on the specific app'"'"'s monitored usage of specific resources associated with power consumption.

8. The method of claim 1 wherein quantifying a specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off according to power consumption further comprises:

monitoring execution by the specific app of specific operations associated with power consumption, while the specific app is preventing the mobile computing device from sleeping while the screen is off; and

quantifying the specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off based at least in part on the specific app'"'"'s monitored execution of specific operations associated with power consumption.

9. The method of claim 1 wherein taking a further action to manage a specific identified app'"'"'s prevention of the mobile computing device from sleeping while the screen is off further comprises:

outputting information concerning the specific identified app'"'"'s prevention of the mobile computing device from sleeping while the screen is off to a user of the mobile computing device.

10. The method of claim 1 wherein taking a further action to manage a specific identified app'"'"'s prevention of the mobile computing device from sleeping while the screen is off further comprises:

blocking the specific identified app from preventing the mobile computing device from sleeping while the screen is off.

11. The method of claim 1 wherein taking a further action to manage a specific identified app'"'"'s prevention of the mobile computing device from sleeping while the screen is off further comprises:

transmitting information concerning the specific identified app'"'"'s prevention of the mobile computing device from sleeping while the screen is off to a central server for tracking.

12. The method of claim 1 wherein:

the mobile operating system consists of Android; and

Android PARTIAL_WAKE_LOCK type wake locks are utilized to determine which specific apps on the mobile computing device prevent the mobile computing device from sleeping while the screen is off.

13. The method of claim 1 further comprising:

utilizing a reflection application programming interface (“

API”

) to glean information concerning specific apps on the mobile computing device preventing the mobile computing device from sleeping while the screen is off.

14. At least one non-transitory computer readable-storage medium for reducing power consumption on a mobile computing device with a screen, a battery, a central processing unit (“

CPU”

) and a mobile operating system, by identifying apps that disproportionally prevent the mobile computing device from going into sleep mode while the screen is off, the at least one non-transitory computer readable-storage medium storing computer executable instructions that, when loaded into computer memory and executed by at least one processor of a computing device, cause the computing device to perform the following steps;

detecting the screen of the mobile computing device being turned off;

determining which specific apps on the mobile computing device prevent the mobile computing device from sleeping while the screen is off;

subsequently to the screen having been turned off, detecting the screen of the mobile computing device being turned back on;

for each specific app determined to have prevented the mobile computing device from sleeping while the screen was off, quantifying the specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off, according to power consumption, wherein quantifying a specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off according to power consumption further comprises determining a corresponding length of time during which the specific app prevented the mobile computing device from sleeping while the screen was off, and quantifying the specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off in proportion to the corresponding length of time;

identifying at least one specific app for which the quantified prevention of the mobile computing device from sleeping while the screen was off meets a specific threshold; and

taking at least one further action to manage the at least one specific identified app'"'"'s prevention of the mobile computing device from sleeping while the screen is off.

15. The at least one non-transitory computer readable-storage medium method of claim 14 wherein determining which specific apps prevent the mobile computing device from sleeping while the screen is off further comprises:

identifying each specific app on the mobile computing device that has an unreleased wake lock at any point during a given period of time while the screen of the mobile computing device is off.

16. The at least one non-transitory computer readable-storage medium method of claim 15 wherein identifying each specific app on the mobile computing device that has an unreleased wake lock at any point during the given period of time while the screen of the mobile computing device is off further comprises:

reading a wake lock status of each app on the mobile computing device in response to detecting the screen of the mobile computing device being turned off;

identifying each specific app on the mobile computing device that is holding a wake lock when the screen of the mobile computing device is turned off;

detecting all wake lock acquisitions and wake lock releases by specific apps on the mobile computing device while the screen is off;

reading a wake lock status of each app on the mobile computing device in response to detecting the screen of the mobile computing device being turned back on; and

identifying each specific app on the mobile computing device that is holding a wake lock when the screen of the mobile computing device is turned back on.

17. The at least one non-transitory computer readable-storage medium method of claim 14 wherein determining lengths of time during which specific apps had prevented the mobile device from sleeping while the screen was off further comprises:

determining a start and an end of each period of time that each specific app prevents the mobile device from sleeping while the screen is off, based on reading a system time counter a) when the screen is turned off, b) whenever a wake lock is acquired by an app while the screen is off, c) whenever a wake lock is released by an app while the screen is off, and d) when the screen is turned back on.

18. The at least one non-transitory computer readable-storage medium method of claim 14 wherein determining lengths of time during which specific apps had prevented the mobile device from sleeping while the screen was off further comprises:

for at least one specific app, identifying multiple, separate periods of time during which the specific app prevents the mobile computing device from sleeping, wherein each of the multiple, separate periods of time occur during a single period of time when the screen is off; and

adding lengths of each of the multiple, separate periods of time to calculate a total length of time for the specific app.

19. A mobile computing device configured for reducing power consumption by identifying apps that disproportionally prevent the mobile computing device from going into sleep mode, the computer system comprising:

a central processing unit;

system memory;

a screen;

a battery;

a screen status detecting module residing in the system memory, the screen status detecting module being programmed to detect the screen of the mobile computing device being turned off and to detect the screen of the mobile computing device being subsequently turned back on;

a sleep prevention determining module residing in the system memory, the sleep prevention determining module being programmed to determine which specific apps on the mobile computing device prevent the mobile computing device from sleeping while the screen is off;

a prevention quantifying module residing in the system memory, the prevention quantifying module being programmed to quantify prevention of the mobile computing device from sleeping while the screen was off, according to power consumption, for each specific app determined to have prevented the mobile computing device from sleeping while the screen was off, wherein quantifying a specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off according to power consumption further comprises determining a corresponding length of time during which the specific app prevented the mobile computing device from sleeping while the screen was off, and quantifying the specific app'"'"'s prevention of the mobile computing device from sleeping while the screen was off in proportion to the corresponding length of time;

a threshold exceeding app identifying module residing in the system memory, the threshold exceeding app identifying module being programmed to identify at least one specific app for which the quantified prevention of the mobile computing device from sleeping while the screen was off meets a specific threshold; and

a disproportionate app managing module residing in the system memory, the disproportionate app managing module being programmed to take at least one further action to manage the at least one specific identified app'"'"'s prevention of the mobile computing device from sleeping while the screen is off.

20. The computer system of claim 19 wherein determining lengths of time during which specific apps had prevented the mobile device from sleeping while the screen was off further comprises:

determining a start and an end of each period of time that each specific app prevents the mobile device from sleeping while the screen is off, based on reading a system time counter a) when the screen is turned off, b) whenever a wake lock is acquired by an app while the screen is off, c) whenever a wake lock is released by an app while the screen is off, and d) when the screen is turned back on.