1464921 - high CPU load on certain video sites

Status: RESOLVED INCOMPLETE

(Firefox :: Untriaged, defect)

Description

[stevenmagdy92]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Firefox/60.0
Build ID: 20180516032328

Steps to reproduce:

open multiple tabs with videos (not necessarily playing) in private window on xhamster.com


Actual results:

high CPU load and fan noise after a couple of minutes sometimes not fixed even by closing the whole window, must quit the application and reopen


Expected results:

normal cpu load as other video sites. same websites work normally on chrome

Comment 1

[Kanchan Kumari QA]

Hello Steven, could you please provide memory report (https://developer.mozilla.org/en-US/docs/Mozilla/Performance/about:memory) when you encounter this issue? This will help dev to look into the root cause of the issue. Thanks!

Comment 2

[stevenmagdy92]

Attachment: memory-report.json.gz

Comment 3

[Kanchan Kumari QA]

Hi erahm, can you please look into this memory report? Thanks!

Comment 4

[Eric Rahm [:erahm]]

The memory usage seems okay for watching multiple videos w/ 14 add-ons enabled. For high CPU usage we probably want a performance profile [1]. stevenmagdy92, can you capture a profile while you're experiencing the high CPU usage?

[1] https://developer.mozilla.org/docs/Mozilla/Performance/Reporting_a_Performance_Problem

Comment 5

[Kanchan Kumari QA]

Closing this bug as resolved:Incomplete due to no response from the reporter for the requested info. Feel free to reopen this bug if issue is still reproducible for you. In that case, please provide profile report ( comment 4). Thanks!