New FPS tool - how to interpret the data?

[Murali Mohan]

The older style FPS too was straightforward to read -  It gave the fps literally - 45 or 55 , with a graph.

After updating to latest - Version 85.0.4183.102  , I see a newer fps monitor in place.

Version 85.0.4183.102

80%   ---     811 ( 753m )   dropped of  5420

• How do I interpret this data?    
• Is 80%  80% of   60  -- 48 fps?
  
• What is   m in 753m?
  

Any help much appreciated!

[Yang Guo]

+Xida Chen 

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[guest271314]

Good question.

The 5420 appears to be monitoring "renderer", or activity (mouse movements; animations) on the page. 

[Mathias Bynens]

+Jecelyn, in case we want to document this / update our FPS meter documentation accordingly

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[Murali Mohan]

Thanks Xida Chen.

Continuing with my questions.

In this given scenario:

   80%   ---     811 ( 753m )   dropped of  5420 

1. I'm assuming  80% is 80% of 60  -  48fps.   80% in the last 1 sec - Is that correct?  Or 80%  over the lifetime of the web-page?

2. According to the link  811 were dropped.  That 811 is over the lifetime of the web-page- correct?

The new meter provides a lot of information. But I personally feel it is less intuitive to interpret than the previous presentation.

On Sat, Sep 19, 2020 at 9:32 AM Xida Chen <xida...@chromium.org> wrote:

Hi,

Please refer to this thread for more detailed explanation of the new fps meter:

https://groups.google.com/a/chromium.org/g/blink-dev/c/iHULoSyUxOQ

Thanks.