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Issue 822699 link

Starred by 1 user
Status: Duplicate
Merged: issue 796193
Owner:
sahel@chromium.org
Closed: Mar 2018
Cc:
tdres...@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug



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TimeToScrollUpdateSwapBegin2 is not recording with smooth scrolling

Project Member Reported by xidac...@chromium.org, Mar 16 2018 
Launch chrome, go to page: http://output.jsbin.com/xijajisovu/quiet

Scroll on the scroller using mouse wheel

Then check chrome://histograms

We expect to have some entries on Event.Latency.ScrollUpdate.Wheel.TimeToScrollUpdateSwapBegin2, but it doesn't exist. Disabling smooth scrolling would fix that.

Comment 1 by tdres...@chromium.org, Mar 16 2018 

I either fixed this, or something very similar a while back. Maybe I fixed it on the compositor? The problem was that we weren't animating an offset until the subsequent frame. If we scroll on the first frame, this should just work.

Comment 2 by sahel@chromium.org, Mar 19 2018

Mergedinto: 796193
Status: Duplicate (was: Assigned)
Yes, it works on cc but not main thread.
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