986552 - Slightly higher power consumption on Instagram homepage

Status: RESOLVED WONTFIX

(Firefox :: General, defect)

Description

[Roberto Agostino Vitillo (:rvitillo)]

Attachment: Testcase 1

As shown in the URL, FF consumes more overall power than Chrome and IE. A noteworthy difference is in terms of GPU power usage where FF uses 4 times more power than IE or Chrome. 

The culprit seems to be a jquery animation as shown in the testcase.

Comment 1

[Nicholas Nethercote [inactive]]

The attached animation doesn't replicate the login page of Instagram for me. I get an ugly sliding animation that runs once and then doesn't do anything else. The actual login page has an animation that transitions smoothly between different pictures every few seconds.

Comment 2

[Nicholas Nethercote [inactive]]

I measured the login page on Mac.

Nightly:

>     total W = _pkg_ (cores + _gpu_ + other) + _ram_ W
> #01  7.86 W =  5.77 ( 0.39 +  1.33 +  4.05) +  2.08 W
> 
> 1 sample taken over a period of 30.000 seconds
> 
> Name                               ID     CPU ms/s  User%  Deadlines (<2 ms, 2-5 ms)  Wakeups (Intr, Pkg idle)  GPU ms/s
> com.apple.Terminal                 109    105.70                                      75.20   59.84             73.57   
>   firefox                          16887  57.71     70.01  0.47    0.00               67.61   54.21             73.57   
>   plugin-container                 16890  43.86     82.28  0.13    0.13               7.13    5.16              0.00    
>   Terminal                         208    5.09      90.95  0.00    0.00               0.40    0.40              0.00    

Safari:

>     total W = _pkg_ (cores + _gpu_ + other) + _ram_ W
> #01  4.98 W =  3.43 ( 0.16 +  0.18 +  3.10) +  1.55 W
> 
> 1 sample taken over a period of 30.000 seconds
> 
> Name                               ID     CPU ms/s  User%  Deadlines (<2 ms, 2-5 ms)  Wakeups (Intr, Pkg idle)  GPU ms/s
> com.apple.Safari                   402    31.09                                       67.67   47.91             0.50    
>   com.apple.WebKit.WebContent      16928  27.68     76.72  0.03    0.00               64.01   45.05             0.50    
>   com.apple.WebKit.Networking      16923  2.15      48.54  0.00    0.00               1.33    0.90              0.00    
>   Safari                           16921  0.71      55.91  0.00    0.00               1.13    0.97              0.00    
>   com.apple.WebKit.WebContent      16926  0.58      66.44  0.00    0.00               1.03    0.87              0.00    
>   com.apple.Safari.SearchHelper    16927  0.03      36.82  0.00    0.00               0.13    0.13              0.00    

Chrome:

>     total W = _pkg_ (cores + _gpu_ + other) + _ram_ W
> #01  6.82 W =  4.93 ( 0.35 +  0.87 +  3.72) +  1.89 W
> 
> 1 sample taken over a period of 30.000 seconds
> 
> Name                               ID     CPU ms/s  User%  Deadlines (<2 ms, 2-5 ms)  Wakeups (Intr, Pkg idle)  GPU ms/s
> com.google.Chrome                  403    161.24                                      139.35  115.66            38.02   
>   Google Chrome Helper             16955  45.68     64.90  0.00    0.00               38.32   27.02             38.02   
>   Google Chrome Helper             16961  81.61     74.16  0.00    0.00               79.24   71.81             0.00    
>   Google Chrome                    16951  35.44     69.68  0.47    0.17               21.79   16.83             0.00  

But the login page is not very interesting. People don't spend much time on it.

Comment 3

[Nicholas Nethercote [inactive]]

> But the login page is not very interesting. People don't spend much time on it.

For that reason I will close this bug. Please feel free to reopen if you have suggestions on how to measure more realistic uses of instagram.