1700006 - DevTools Performance waterfall graph is not selectable

Status: RESOLVED INVALID

(DevTools :: Performance Tools (Profiler/Timeline), defect, P3)

Description

[argumemnon]

Attachment: Screenshot-2021-03-21 13_03_48.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0

Steps to reproduce:

Open up the Performance inspector in Developer Tools (Shift + F5)
Start recording performance on any page.
Stop the recording.
Try to make a selection on the framerate graph by dragging over it. You can't!

Actual results:

You cannot accurately select a portion of the recording to zoom into. In fact you cannot make any selection at all unless your mouse is over the "max / min" FPS display, at which point the selection is made far to the right, as opposed to directly under your mouse.

Expected results:

You should be able to drag over a portion of time in the recording with your mouse, and be able to modify the handlebars of the "zoomed in" portion. Clicking and dragging should select an area that corresponds with your mouse.

Comment 1

[argumemnon]

I should add this appears to be a Windows only bug.

Comment 2

[Andrei Purice]

Reproduced on the latest versions of Firefox Nightly 89.0a1 (2021-03-22), beta 87.0 and release 86.0.1 .
Setting up flags and a component in order to get the dev team involved.
If you feel it's an incorrect one please feel free to change it to a more appropriate one.
Assigning it a severity of S4.
Not a recent regression since it can be reproduced back to Firefox 70.0.

Comment 3

[Julien Wajsberg [:julienw]]

Thanks for the bug!

This is weird that this is present for so much time.
This works as expected for me on Linux and I don't have a Windows machine at the moment. I'd appreciate some more insight if you can try to debug the code on your side.

Also please note that we'll enable very soon our new tool, so you can already try it by enabling it manually in the devtools' settings. For this reason I doubt we'll fix this issue unless we get some help.

Comment 4

[Jan Honza Odvarko [:Honza] (always need-info? me)]

The DevTools Perforamance panel is now based on new Firefox profiler https://profiler.firefox.com.
So, things like waterfall graph don't exist anymore, closing.