The default bug view has changed. See this FAQ.

jank when opening a google groups page

RESOLVED WORKSFORME

Status

()

Core
JavaScript Engine
RESOLVED WORKSFORME
5 years ago
a year ago

People

(Reporter: timbugzilla, Unassigned)

Tracking

({perf})

Trunk
x86
Windows 8
Points:
---

Firefox Tracking Flags

(Not tracked)

Details

(URL)

Attachments

(1 attachment)

(Reporter)

Description

5 years ago
Created attachment 663634 [details]
about:support as text file

I experience a few seconds of jank when opening a google groups' group page such as mozilla.dev.platform.

A gecko profiler profile for this is available here:

http://people.mozilla.com/~bgirard/cleopatra/?report=bd345397daed044bf60792452d9c80edb9d4a235

My about:support has been attached as a text file.
Component: General → General
Keywords: perf
Product: Firefox → Core

Comment 1

5 years ago
I notice this on x64 Windows 7 on all Google Blogspot blogs that use widgets and default themes.
(Reporter)

Comment 2

4 years ago
Here's a profile for opening the "my groups" page at google groups.

http://people.mozilla.com/~bgirard/cleopatra/#report=d0d1a2602885fe296ab0d64c6c4be88e27415b2c

Most of the jank period seems to be spent in an Evaluate String operation.

Profile was recorded on an Intel E8500 based machine with win7 x64. 06/02 moz-central nightly win32 build.

https://groups.google.com/forum/#!myforums
(Reporter)

Updated

4 years ago
Component: General → JavaScript Engine

Comment 3

4 years ago
even opening the gmail page for the first time causes ~1-1.5 seconds jank.
Profile :
http://people.mozilla.com/~bgirard/cleopatra/#report=aad761f1529578c57c9fee68ce3ceb8b60288de3

IIRC this is already being tracked in another bug. Should be P1, IMO.

Comment 4

4 years ago
see also : bug 789598
(Reporter)

Comment 5

4 years ago
There is also quite a bit of jank when using the "u" keyboard shortcut to return to group page from a thread page. e.g. Go to the moz.dev.platform group:

https://groups.google.com/forum/#!forum/mozilla.dev.platform

Then enter the thread for "How does one debug uninitialized value usage from JavaScript (TB) ?". 

https://groups.google.com/forum/#!topic/mozilla.dev.platform/fEUHUse_qb8

Then press the "u" key to return to the moz.dev.platform group.

I do not see this when using the same keyboard shortcut to return to my inbox in gmail for example. The operation also completes a lot more quickly in Chrome.

The profile is here:

http://people.mozilla.com/~bgirard/cleopatra/#report=a919bc7a8903d32c10c294240efef8f700e9cd9f

Most of the jank time seems to be spent in the JS interpreter.
(Reporter)

Comment 6

4 years ago
That profile was recorded on an Intel E8500 based machine running todays moz central nightly win32 build, on win7 x64.

Comment 7

4 years ago
http://people.mozilla.com/~bgirard/cleopatra/#report=c5caf961350d8ccb46dcd8825fc8bc741f023f85

In google groups, switching from "compact list view" to "standard view".
Can you still reproduce?

https://groups.google.com/forum/#!topic/mozilla.dev.platform/fEUHUse_qb8 takes a long time to load. But I do not experience jank. This is with a current nightly and e10s enabled, heavily loaded with 400 tabs

I also cannot reproduce related bug 924001, nor bug 802731
Flags: needinfo?(timbugzilla)
Flags: needinfo?(mayankleoboy1)

Comment 9

2 years ago
with e10s and APZC, this is fine now.
Flags: needinfo?(mayankleoboy1)
(Reporter)

Comment 10

2 years ago
Looks like there is still a little bit of jank (like less than 500 ms), but it is much better.
Flags: needinfo?(timbugzilla)
Thanks for the update
Status: UNCONFIRMED → RESOLVED
Last Resolved: a year ago
Resolution: --- → WORKSFORME
You need to log in before you can comment on or make changes to this bug.