1003912 - [B2G][Browser]Websites that load slowly drains device battery at alarming rate at nydailynews.com

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Gaia::Browser, defect, P2)

Description

[Montoya Clemmons (MClemmons)]

Attachment: Firewatch Log

User taps browser app  and goes to URL that loads very slowly (nydailynews.com, mlb.com, tvguide.com). As the web page struggles to load, the battery percentage in Settings decreases at rate of 1-1.5% per minute. 

Prerequisites:
Have an active internet connection and clear browsing history and clear cookies and stored data

Repro Steps:
1) Updated Tarako to BuildID: 20140429014002 
2) Tap Browser App
3) Navigate to a website URL that has intense graphics and/or takes long to load (i.e. nydailynews.com) 
4) While the page is loading, tap homescreen button and tap Settings
5) Observe the battery percentage 
6) Repeat steps 4 and 5 every minute or so

Actual:
Battery percentage decreases at rate of 1 percent per minute 

Expected:
Battery percentage decreases at rate 1 percent every 3-5 minutes

Notes: 
Repro frequency: 10/10 – 100 percent for nydailynews.com

See attached: Firewatch, Video Clip = https://www.youtube.com/watch?v=kz1YeUs0XJE
Other: Tested with Data Connection only, Wifi not available using this Tarako build.  

Environmental Variables: 
Device: Tarako 1.3T MOZ 
BuildID: 20140429014002 
Gaia: b5adc5a943d3abbd6ab070a47c847f2c24891cc5 
Gecko: e9890f5d4709 
Version: 28.1
Firmware Version: sp6821a_gonk4.0_user.pac

Comment 1

[Montoya Clemmons (MClemmons)]

This issue does reproduce on 1.3 Buri. Following the STR in Comment 0, battery life decreased for nydailynews.com by 3 percent in under a minute.

Environmental Variables: 
Device: Buri 1.3 MOZ 
BuildID: 20140429024001 
Gaia: caab7a78f0c04913f48a3051259663ee85625906 
Gecko: f84a8ffbc552 
Version: 28.0
Firmware Version: v1.2-device.cfg

Comment 2

[Joe Cheng [:jcheng] (please needinfo)]

ni? James

Comment 3

[James Zhang (Spreadtrum)]

(In reply to mclemmons from comment #1)
> This issue does reproduce on 1.3 Buri. Following the STR in Comment 0,
> battery life decreased for nydailynews.com by 3 percent in under a minute.
> 
> Environmental Variables: 
> Device: Buri 1.3 MOZ 
> BuildID: 20140429024001 
> Gaia: caab7a78f0c04913f48a3051259663ee85625906 
> Gecko: f84a8ffbc552 
> Version: 28.0
> Firmware Version: v1.2-device.cfg

So it's common issue, not tarako only?

Comment 4

[Naoki Hirata :nhirata (please use needinfo instead of cc)]

Yes, it looks like a common issue.  We'll need to investigate that for b2g in general I think?

Comment 5

[Jon Hylands [:jhylands]]

I'll test this with my battery harness tomorrow, and see how it shows up.

Comment 6

[Jon Hylands [:jhylands]]

So I'm seeing a spike in power usage from normal idle current to about 60% higher, every minute, for 10-20 seconds, with the browser in the background on nydailynews.com. This is on a Tarako, running latest nightly engineering build (1.3T).

Gaia      c067cc717c4a3bb8b412f28f37d224eb84b639df
Gecko     https://hg.mozilla.org/releases/mozilla-b2g28_v1_3t/rev/8eebf8120dbd
BuildID   20140505164002
Version   28.1

Comment 7

[bhavana bajaj [:bajaj]]

(In reply to Naoki Hirata :nhirata (please use needinfo instead of cc) from comment #4)
> Yes, it looks like a common issue.  We'll need to investigate that for b2g
> in general I think?

Not blocking on this as this is reproducible in other branches as well and not tarako specific.

Comment 8

[Montoya Clemmons (MClemmons)]

This issue is reproducible on 1.4 Flame. Navigating to the website nydailynews.com with a low battery (12%) caused a battery slip to 10 percent in less than 1 minute. 

Environmental Variables:
Device: Flame 1.4 MOZ
BuildID: 20140515000202
Gaia: 2e97bee6bb79d3577dba1bf2a1bbfcba64ee99ab
Gecko: 0cb91945f404
Version: 30.0
Base: v10F-3

Comment 9

[Naoki Hirata :nhirata (please use needinfo instead of cc)]

I think this should be investigated to see how much we can reduce in power consumption.

Comment 10

[Jon Hylands [:jhylands]]

Until someone actually starts working on this, I'm going to reduce it to a P2

Comment 11

[Ben Francis [:benfrancis]]

Could it be the rendering of the loading animated GIF that is draining power so quickly? We have optimised this in the past for CPU usage though and the GIF hasn't been updated for 2 years (except to add larger versions).

Comment 12

[BMO Automation]

Firefox OS is not being worked on