PM and Duolingo.com almost totally freezes together with Linux on one specific animated site[html5 animation?]

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name108
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PM and Duolingo.com almost totally freezes together with Linux on one specific animated site[html5 animation?]

Unread post by name108 » 2019-10-10, 04:36

Hi

As in Subject name. When I go to this sub-side of duolingo https://www.duolingo.com/plus the whole browser almost freezes together with the system(the website animation drops to like 1fps and the system is much more slower also) and then I have to kill the browser by system monitor or some other way(the ctrl+w or X button doesn't work).

Does it also happens to you? Is it specific for Linux? My Linux is Linux Mint 19.2 and PM 28.7.1

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Re: PM and Duolingo.com almost totally freezes together with Linux on one specific animated site[html5 animation?]

Unread post by Moonchild » 2019-10-10, 10:22

The way they animate the little elements on the background (individually animating DIVs) is very expensive and will cause high CPU load due to having to recompute and composite the page for each frame. This isn't Linux specific -- on my Windows system it will also pretty much eat up one processor core for it, and that's -with- hardware acceleration. You may want to write to duolingo and let them know their animation kills website usability.
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name108
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Re: PM and Duolingo.com almost totally freezes together with Linux on one specific animated site[html5 animation?]

Unread post by name108 » 2019-10-10, 14:13

Thank you for the explanation.
I will write but I guess they will say I should change the browser, where it works normal(I tried only chromium and it was ok).
The CPU was almost the same, but the CPU "IOWait" was 60% more.

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Re: PM and Duolingo.com almost totally freezes together with Linux on one specific animated site[html5 animation?]

Unread post by athenian200 » 2019-10-15, 20:42

What kind of graphics card do you have? That site seems to work fine on my Solaris and Windows machines (maybe I'm not triggering the right animation, but interacting with that page is surprisingly smooth). It's worth noting that both machines have nVidia hardware acceleration, and that could be making a difference. If you're using software rendering or something like that, this might be REALLY slow/broken for you. I know because I've tried to struggle along with software rendering before, it really sucks.

If you are on Linux, make sure you're using the proprietary nVidia drivers and not those awful nouveau drivers that some distributions push by default... those don't work well and don't enable all features of the card.

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