1663768 - 9to5google article takes 2x as much time to load as Chrome

Status: NEW

(Core :: Performance, defect, P3)

Description

[Asif Youssuff]

Basic information

Saw some comments that Pinterest was slow.

Steps to Reproduce:

1. Load https://9to5google.com/2020/08/18/gifted-play-music-subscription/ in Fenix

Expected Results:

Around 3 seconds or less.

Actual Results:

~6 seconds.

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More information

Profile URL: https://share.firefox.dev/2Faxla9

Basic systems configuration:

OS version: Android 5.1.1

GPU model: Adreno 305

Number of cores: Quad-core 1.2 GHz Cortex-A7

Amount of memory (RAM): 1GB

Thanks so much for your help.

Comment 1

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

I was able to reproduce the issue on my Moto G5 on 9to5google: Chrome's first draw is around 3.2s and the latest Fenix Nightly's first draw is around 9.5s. Here's a side-by-side comparison: https://drive.google.com/file/d/1CwouJDpuGMgEYqj-L024P8YeDAwcTaAX/view?usp=sharing

I was not able to reproduce the issue on the Pinterest home page, not logged in – the first draw occurred around the same time. The pages were identical except the the "Continue with Google" button appeared several seconds later (10s?) in Chrome but it seemed like it could be a fluke. Ideally, I'd test logged in but I don't have an account.

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The Performance Priority Calculator has determined this bug's performance priority to be P2. If you'd like to request re-triage, you can reset the Performance flag to "?" or needinfo the triage sheriff.

Platforms: Android
Page load impact: Severe
[x] Able to reproduce locally