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[Bug 1422898] Re: Excessive CPU usage, even when the device is turned off

 

Here's a text file with the properly formatted output of the "top"
command.

** Attachment added: "formatted_top.txt"
   https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1422898/+attachment/4321345/+files/formatted_top.txt

** Summary changed:

- Excessive CPU usage, even when the device is turned off
+ Excessive CPU usage, even when the screen is turned off

** Description changed:

  Since mako image r102 (vivid-proposed), the CPU usage of Unity8 is very excessive and increasing over time.
- After boot, the phone runs smooth but after some time I have to restart it because the phone lacks heavily. Looking at the output of the "top" command, I can see that Unity8 is taking up a lot of CPU power.
+ After boot, the phone runs smooth but after some time it lags heavily.
  
- This is the output of the "top" command with the SCREEN TURNED OFF (run
- via adb):
- 
- top - 21:31:07 up  3:56,  1 user,  load average: 0.85, 1.26, 1.17
- Tasks: 276 total,   2 running, 265 sleeping,   9 stopped,   0 zombie
- %Cpu(s): 22.8 us,  2.0 sy,  0.0 ni, 75.2 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
- KiB Mem:   1878560 total,  1659076 used,   219484 free,    67828 buffers
- KiB Swap:    32764 total,        0 used,    32764 free.   827728 cached Mem
- 
-   PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND      
-  2376 phablet   20   0  519360 120648  53824 R 23.0  6.4  40:53.06 unity8       
- 20192 phablet   20   0    6260   1276    832 R  2.0  0.1   0:02.92 top          
- 17694 root      20   0       0      0      0 S  1.0  0.0   0:06.05 kworker/0:2  
-  1086 root       0 -20    7576    552    400 S  0.7  0.0   1:13.69 mpdecision   
-  2575 phablet   20   0  567088 125860  51192 S  0.3  6.7   1:04.46 unity8-dash  
-     1 root      20   0    4184   2560   1100 S  0.0  0.1   0:20.28 init         
-     2 root      -2   0       0      0      0 S  0.0  0.0   0:01.16 kthreadd     
-     3 root      20   0       0      0      0 S  0.0  0.0   0:00.28 ksoftirqd/0  
-     6 root      rt   0       0      0      0 S  0.0  0.0   0:00.00 migration/0  
-    16 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 khelper      
-    17 root      20   0       0      0      0 S  0.0  0.0   0:00.03 kdevtmpfs    
-    18 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 netns        
-    19 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 suspend_sys+ 
-    20 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 suspend      
-    22 root     -51   0       0      0      0 S  0.0  0.0   0:00.00 irq/203-msm+ 
-    23 root      20   0       0      0      0 S  0.0  0.0   0:00.10 sync_supers  
-    24 root      20   0       0      0      0 S  0.0  0.0   0:00.27 bdi-default
- 
- Unity8 takes up 23% of CPU power. When the screen is on, this figure is
- much higher and sometimes rises to 60%.
+ As you can see from the attached output of the "top" command, Unity8
+ takes up 23% of CPU power when the screen is TURNED OFF. When the screen
+ is on, this figure is much higher and sometimes rises up to 60%.

** Description changed:

  Since mako image r102 (vivid-proposed), the CPU usage of Unity8 is very excessive and increasing over time.
  After boot, the phone runs smooth but after some time it lags heavily.
  
  As you can see from the attached output of the "top" command, Unity8
- takes up 23% of CPU power when the screen is TURNED OFF. When the screen
+ consumes 23% of CPU power when the screen is TURNED OFF. When the screen
  is on, this figure is much higher and sometimes rises up to 60%.

** Description changed:

  Since mako image r102 (vivid-proposed), the CPU usage of Unity8 is very excessive and increasing over time.
  After boot, the phone runs smooth but after some time it lags heavily.
  
  As you can see from the attached output of the "top" command, Unity8
- consumes 23% of CPU power when the screen is TURNED OFF. When the screen
- is on, this figure is much higher and sometimes rises up to 60%.
+ consumes 23% of CPU power when the screen is TURNED OFF (command run via
+ adb). When the screen is on, this figure is much higher and sometimes
+ rises up to 60%.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to unity8 in Ubuntu.
https://bugs.launchpad.net/bugs/1422898

Title:
  Excessive CPU usage, even when the screen is turned off

Status in unity8 package in Ubuntu:
  New

Bug description:
  Since mako image r102 (vivid-proposed), the CPU usage of Unity8 is very excessive and increasing over time.
  After boot, the phone runs smooth but after some time it lags heavily.

  As you can see from the attached output of the "top" command, Unity8
  consumes 23% of CPU power when the screen is TURNED OFF (command run
  via adb). When the screen is on, this figure is much higher and
  sometimes rises up to 60%.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1422898/+subscriptions


References