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www.duolingo.com - High CPU usage when doing lessons #134938

Open tazmann9 opened 7 months ago

tazmann9 commented 7 months ago

URL: https://www.duolingo.com/learn

Browser / Version: Firefox 124.0 Operating System: Mac OS X 10.15 Tested Another Browser: Yes Safari

Problem type: Something else Description: Simple websites such as duolingo.com make my Macbook Air run hot Steps to Reproduce: Simple websites such as DuoLingo.com make my Macbook Air run hot even just having this website open and not using it. DuoLingo is not a graphics nor data intensive website. The Activity Monitor shows that it is Firefox. Firefox doesn’t seem to have issue with other websites. Duolingo appears to work fine on other browsers. Hardware = MacBook Air 1,6 GHz Dual-Core Intel Core i5. Software = macOS 14.2.1, Firefox 123.0.1

Browser Configuration
  • None

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sv-calin commented 7 months ago

Thank you for reporting this issue, I was able to reproduce it. The CPU usage is high when doing lessons.

Firefox

image

Chrome

image

Tested on: • Browser / Version: Firefox Nightly 126.0a1 (2024-03-22) / Firefox Release 124 / Chrome 123.0.6312.59 • Operating System: Mac OS Sonoma 14.1.3

Notes:

  1. Reproducible on both Firefox Release and Nightly
  2. Not reproducible on Chrome

Moving to Needsdiagnosis.

[qa_12/2024]

sv-calin commented 7 months ago

Performance profile: https://share.firefox.dev/49Z4VsO

[inv_12/2024]