1482699 - Video playback on Conan website takes a lot of CPU

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect, P3)

Description

[Mayank Bansal]

Attachment: aboutsupport.txt

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0
Build ID: 20180811220142

Steps to reproduce:

enable WR
go to http://teamcoco.com/comiccon/conan-says-goodbye-to-san-diego
Play the video


Actual results:

High CPU use
1 firefox.exe process is continuously using 100% of 1 CPU


Expected results:

not so

Comment 1

[Mayank Bansal]

https://perfht.ml/2B4KYF7

Comment 2

[Sotaro Ikeda [:sotaro]]

(In reply to Mayank Bansal from comment #0)
> 
> enable WR
> go to http://teamcoco.com/comiccon/conan-says-goodbye-to-san-diego
> Play the video

Hi Mayank Bansal, thank you for the report. I could not play the video on the URL. Can you still play the video?

Comment 3

[Sotaro Ikeda [:sotaro]]

(In reply to Mayank Bansal from comment #1)
> https://perfht.ml/2B4KYF7

The profiler seems not have an information that one thread was always running. I checked video playbacks of other videos of http://teamcoco.com/ . I could not reproduce the situation of using 100% of 1 CPU. But there were situations that Render thread was very busy.

Comment 4

[Mayank Bansal]

(In reply to Sotaro Ikeda [:sotaro] from comment #2)
> (In reply to Mayank Bansal from comment #0)
> > 
> > enable WR
> > go to http://teamcoco.com/comiccon/conan-says-goodbye-to-san-diego
> > Play the video
> 
> Hi Mayank Bansal, thank you for the report. I could not play the video on
> the URL. Can you still play the video?



Go to http://teamcoco.com/comedy and click on any of the videos. This creates a sort of pop-out window video player interface. A video playing in that uses abnormally high CPU

Comment 5

[Sotaro Ikeda [:sotaro]]

(In reply to Sotaro Ikeda [:sotaro] from comment #2)
> (In reply to Mayank Bansal from comment #0)
> > 
> > enable WR
> > go to http://teamcoco.com/comiccon/conan-says-goodbye-to-san-diego
> > Play the video
> 
> Hi Mayank Bansal, thank you for the report. I could not play the video on
> the URL. Can you still play the video?

Sorry, my nightly had a problem:( I could see the video now. I saw the video on my 4 win10 PCs with WebRender enabled. But I could not reproduce the problem.

The direct video source was the following. Do you still see the problem with the following video? Do you see the problem with YouTube video playback?

 http://ak.storage-w.teamcococdn.com/cdn/2018-07/104336/a644/CONAN_072218_Goodnight-standard.mp4

Comment 6

[Mayank Bansal]

The direct video link plays normally, with normal cpu use.

As I said in comment 4, the high CPU use is only when the video plays in the the pop-up-inside-window video player , which happens if you go to http://teamcoco.com/comedy , and then click on any video to play it.

Another profile: https://perfht.ml/2w7VxBy

Comment 7

[Mayank Bansal]

maybe the page is doing something abnormal in the background, while the video plays in the pop-up video player

Comment 8

[Mayank Bansal]

Here is a profile wiht WR disabled. https://perfht.ml/2Be6pDM
This uses normal CPU

Comment 9

[Sotaro Ikeda [:sotaro]]

(In reply to Mayank Bansal from comment #6)
> The direct video link plays normally, with normal cpu use.
> 
> As I said in comment 4, the high CPU use is only when the video plays in the
> the pop-up-inside-window video player , which happens if you go to
> http://teamcoco.com/comedy , and then click on any video to play it.

I tried it on several Win10 PCs, I did not see "continuously using 100% of 1 CPU". but PC used more CPU/GPU resources than non-WebRender case. This seems to be related to Bug 1474583.

Comment 10

[Jeff Muizelaar [:jrmuizel]]

Can you retest now. It should be noticeably better.

Comment 11

[Mayank Bansal]

http://bit.ly/2IoIb9P

The pofiles look similar, the CPU use is OK now, i think

Will close this, and report again