Bug 412559 - excessive CPU load on some websites
Summary: excessive CPU load on some websites
Status: CONFIRMED
Alias: None
Product: Falkon
Classification: Applications
Component: general (other bugs)
Version First Reported In: 3.1.0
Platform: openSUSE Linux
: NOR normal
Target Milestone: ---
Assignee: David Rosca
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-10-03 13:44 UTC by kde
Modified: 2020-11-12 13:16 UTC (History)
1 user (show)

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Description kde 2019-10-03 13:44:39 UTC 
Visiting some websites causes very high CPU load and lag, for example:
https://www.xonotic.org

It also happens with a new empty Falkon profile
Firefox on the same machine with an empty profile does not show this behaviour.

Operating System: openSUSE Tumbleweed 20190930
KDE Plasma Version: 5.16.5
KDE Frameworks Version: 5.62.0
Qt Version: 5.13.1
Kernel Version: 5.3.1-1-default
OS Type: 64-bit
Processors: 8 × AMD Ryzen 5 PRO 3500U w/ Radeon Vega Mobile Gfx
Memory: 13,5 GiB
Comment 1 Justin Zobel 2020-11-12 06:19:10 UTC 
I have tested this and while I can't see the lag I do see Qtwebengine threads going a bit nuts.

Though testing https://www.xonotic.org/ in Vivaldi (Chromium based) I get similar results.

Web developers need to calm down a bit.
Comment 2 kde 2020-11-12 13:16:44 UTC 
Browsing that site with Firefox shows much less CPU load. Maybe it's a Chromium/QtWebEngine problem.