Unresponsive, slow loading of page content on braytech.org
Categories
(Core :: Layout: Grid, defect, P3)
Tracking
()
People
(Reporter: yoasif, Unassigned)
References
Details
Attachments
(1 file)
|
(deleted),
text/plain
|
Details |
From: https://www.reddit.com/r/firefox/comments/o3b3r4/why_is_firefox_failing/h2ci707/
Basic information
Steps to Reproduce:
- Open https://braytech.org/3/4611686018468513667/2305843009403076491/activity
- Open all activities on right side of screen by clicking on them
Expected Results:
In Chrome the reports open instantly without any delay and without the browser instance getting unresponsive.
Actual Results:
It took ages for each report to open and while FF struggled to open the reports, the whole FF instance became unresponsive.
More information
Profile URL: https://share.firefox.dev/2U8bPtF
Basic systems configuration:
OS version: Windows 10
GPU model: NVIDIA GeForce RTX 2080 Ti
Number of cores: 4
Amount of memory (RAM):
Thanks so much for your help.
|
Reporter | |
Comment 1•3 years ago
|
||
|
||
Comment 2•3 years ago
|
||
This site has a lot of list elements and uses rAF which causes reflow in every tick. I notice Chrome is also dropping frames for me, however, they seem to be able to finish the layout much quicker than Firefox.
This seems to be a case where Chrome's reflow performance defeats Firefox.
Is this known Emilio, what do you think?
|
||
Comment 3•3 years ago
|
||
The profile in comment 0 doesn't have native stacks. But on a profile with those we can see massively nested grid reflows: https://share.firefox.dev/3iULvxC
The page is doing something a bit silly that changes the page layout over and over and causes the issue to be so annoying, but this seems basically bug 1591366.
|
||
Updated•3 years ago
|
|
||
Comment 4•2 years ago
|
||
(In reply to Emilio Cobos Álvarez (:emilio) from comment #3)
The page is doing something a bit silly that changes the page layout over and over and causes the issue to be so annoying, but this seems basically bug 1591366.
Indeed, this was fixed (or at least improved) by bug 1591366.
For me, there's still a small delay when clicking to open activities, in both Firefox and Chrome. Before bug 1591366's fix, the delay feels closer to a second and feels more noticeable.
I tried capturing profiles in Nightly 2021-09-25 (just after bug 1591366 landed) with the relevant layout.css.grid-item-baxis-measurement.enabled pref enabled vs. disabled, and the profiles show repeated 100+ms reflows when the pref is disabled, vs. no substantial amount of reflow time when the pref is enabled.
--> Closing as a dupe of bug 1591366.
Description
•