1345002 - (meta) Android performance issues on rendering page

Status: RESOLVED INCOMPLETE

(Firefox for Android Graveyard :: General, enhancement, P3)

Description

[Al Tsai [:atsai]]

After a series of testing, we found that Fennec are 3x ~ 6x slower than other browsers on Android for loading a webpage. You can reference the URL of the bug.

Since the links of test results may be removed by provider, here's the reproduce step.

1. Go to https://www.webpagetest.org/
2. Enter the website you want to test
3. Select a location of devices. We use "Dulles, VA USA (Desktop,Android,iOS 9)".
4. Rest settings: (should be there by default)
  - Connection: Mobile LTE (12Mbps/12 Mbps 70ms RTT)
  - Number of test run: 9
  - First View and Repeat View: check
  - Capture Video: check
5. Click on "START TEST"

Comment 1

[Al Tsai [:atsai]]

If we want to start from some specific examples, I'll suggest to start with reddit.com and espn.com. Both of these two websites have many javascript scripts to control the layout. it should be worthwhile to take a look into it.

Comment 2

[Wesley Huang [:wesley_huang] (EPM) (NI me)]

I wonder if we can have SME to look into this.

Comment 3

[Wesley Huang [:wesley_huang] (EPM) (NI me)]

Hi Al,
On the other hand, how about running similar benchmark testings but on google suites?  (assuming doing this via WPT is easy)
Those are where we have more people digging into.  See Bug 1336173

Comment 4

[Bobby Chien]

Is it possible to have profile data for all of your test pages?

Ref: https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Profiling_with_the_Built-in_Profiler#Profiling_Firefox_mobile

Comment 5

[Wesley Huang [:wesley_huang] (EPM) (NI me)]

(In reply to Bobby Chien [:bchien] from comment #4)
> Is it possible to have profile data for all of your test pages?
> 
> Ref:
> https://developer.mozilla.org/en-US/docs/Mozilla/Performance/
> Profiling_with_the_Built-in_Profiler#Profiling_Firefox_mobile

:atsai is aware of this. We'll see how to move it forward.

Comment 6

[Wesley Huang [:wesley_huang] (EPM) (NI me)]

Let's use this as a meta bug.
We can create separate bugs blocking this, with some more specific details and profiler data.

Comment 7

[Al Tsai [:atsai]]

I've setup gecko profiler for Firefox on Android on my local environment. I don't see the point to generate all websites in the sheet. Let's start with the three websites Firefox performs with issues: att.com, reddit.com, and espn.com.

Comment 8

[Al Tsai [:atsai]]

Attachment: Fennec_profile_att.sps.json.gz

Comment 9

[Al Tsai [:atsai]]

Attachment: Fennec_profile_espn.sps.json.gz

Comment 10

[Al Tsai [:atsai]]

Attachment: Fennec_profile_reddit.sps.json.gz

Comment 12

[Wesley Huang [:wesley_huang] (EPM) (NI me)]

Hi Jean,
Was this one being minus per the qf triage? 
Just want to know why this is not prioritized.

Comment 13

[Kan-Ru Chen [:kanru] (UTC+9)]

We marked during qf triage. This is [qf-] because generally QF doesn't track mobile performance and this is a meta bug. If there are more specific performance bugs you could still nominate them.

Comment 14

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

[triage] Bulk edit from title: this is a non-critical issue or [meta] bug.

Comment 15

[BMO Automation]

We have completed our launch of our new Firefox on Android. The development of the new versions use GitHub for issue tracking. If the bug report still reproduces in a current version of [Firefox on Android nightly](https://play.google.com/store/apps/details?id=org.mozilla.fenix) an issue can be reported at the [Fenix GitHub project](https://github.com/mozilla-mobile/fenix/). If you want to discuss your report please use [Mozilla's chat](https://wiki.mozilla.org/Matrix#Connect_to_Matrix) server https://chat.mozilla.org and join the [#fenix](https://chat.mozilla.org/#/room/#fenix:mozilla.org) channel.