Open Bug 1737173 Opened 3 years ago Updated 3 years ago

file freezes Firefox but doesn't on chrome

Categories

(Core :: Graphics: Text, defect)

Product:
Core
Component:
Graphics: Text
Version:
Firefox 93
Platform:
Desktop
Windows 11
Type:
defect

Tracking

()

People

(Reporter: u635660, Unassigned)

Details

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36

Steps to reproduce:

open crash firefox.html file on firefox

Actual results:

it freezes up and is not responsive

Expected results:

it should not freeze up it should be responsive like chrome

Component: Untriaged → Performance
OS: Unspecified → Windows 11
Product: Firefox → Core
Hardware: Unspecified → Desktop

the file is too large for Bugzilla here is the link to download it https://drive.google.com/file/d/1x-3hBzxuz-9qIXOF2qp-luXM12RCFkE8/view?usp=sharing

Component: Performance → Layout: Text and Fonts

A profile on Linux; https://share.firefox.dev/31tKJkx
There are two big chunks in the browser parent process, one is in the webrender renderer thread, the other is in the main-thread, presumably the latter is the cause of irresponsiveness.

Component: Layout: Text and Fonts → Graphics: Text

I can verify this on Linux as well. Firefox doesn't hang, but it's definitely degraded and hard to use.

Severity: -- → S2

andy, the test case doesn't seem available.

Severity: S2 → S3
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