Closed Bug 1555166 Opened 5 years ago Closed 5 years ago

Slow/hang Firefox UI with YouTube in a container

Categories

(Core :: DOM: Core & HTML, defect)

Product:
Core
Component:
DOM: Core & HTML
Version:
69 Branch
Platform:
Desktop
Windows 10
Type:
defect
Priority:
Not set
Severity:
critical

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1554527

People

(Reporter: alice0775, Unassigned)

References

(Blocks 1 open bug, Regression,
URL
)

Details

(Keywords: hang, perf, regression)

+++ This bug was initially created as a clone of Bug #1554527 +++

I can also reproduce the UI freeze and high CPU usage and high memory usage.
Bug 1554527 does not fix this problem.

Version 69.0a1
Build ID 20190528172821
User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0

Steps to reproduce:
1, Create a new profile
2. Open a new tab in a container (long click on "+" or right click -> Reopen in Container)
3. Browse to https://www.youtube.com/watch?v=qldxyjEjjBQ
4. Scroll down until the last comment
5. Repeat scroll to top and bottom with mouse wheel/drag scroll thumb

Actual results:
Scrolling intermittently stop
Each interaction with UI is slow and then freeze: switching tabs, moving window, clicking on buttons etc.

Expected results:

Firefox should run smoothly (as usual).

I can see memory grow up.

Summary: Slow Firefox UI with YouTube in a container → Slow/hang Firefox UI with YouTube in a container
Has Regression Range: --- → yes
Has STR: --- → yes
Priority: P1 → --

Hang, I must kill Nightly...

Severity: normal → critical

I can also still reproduce bug 1554567.

Because of browser freeze, it is difficult to capture gecko profiler log
But, I got a log https://perfht.ml/2YVx6nz

From that, you can see the cookie code is using all the time in Main Process....
https://perfht.ml/2WbNJyl

Flags: needinfo?(amarchesini)

That might be matching what I'm experimeting as well since a few days: https://perfht.ml/2McfHp7 this was captured on Twitter, I'm heavily relying on containers as well.

[Tracking Requested - why for this release]:
severe regression

tracking-firefox69: --- → ?

I asked to the sheriff to backout bug 1553867 and repin a nightly

let's dup Bug 1554527 which is reopened.

Status: NEW → RESOLVED
Closed: 5 years ago
status-firefox67: unaffected → ---
status-firefox67.0.1: unaffected → ---
status-firefox68: unaffected → ---
status-firefox69: affected → ---
tracking-firefox69: ? → ---
No longer depends on: 1554527
Resolution: --- → DUPLICATE
Flags: needinfo?(amarchesini)
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