Last modified: 2014-09-09 23:53:09 UTC

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Bug 50616 - VisualEditor: Significant slowness in loading in Firefox
VisualEditor: Significant slowness in loading in Firefox
Status: ASSIGNED
Product: VisualEditor
Classification: Unclassified
Initialisation (Other open bugs)
unspecified
All All
: High normal
: ---
Assigned To: Editing team bugs – take if you're interested!
:
Depends on:
Blocks: ve-performance
  Show dependency treegraph
 
Reported: 2013-07-02 21:57 UTC by Ryan Kaldari
Modified: 2014-09-09 23:53 UTC (History)
6 users (show)

See Also:
Web browser: Firefox
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description Ryan Kaldari 2013-07-02 21:57:52 UTC
I imagine this is mostly due to Firefox's JS engine, but I commonly run across articles that take an extremely long time to load the new VisualEditor interface. For example, "Domestic violence" and "Feminism" take about 30 seconds. Really long articles like "World War II" take over a minute. The interface loads in about half that time in Safari. I'm using Firefox 21.
Comment 1 matanya 2014-09-09 23:24:44 UTC
I'm using firefox 32 and did some tests on this on en,wikipedia, and beta en, which runs HHVM, but is on a virt cluster.

Article name:Barack Obama
beta en: 41.7s
en : 17.6s

Article name: Cat
beta en: 31.7s
en: 16.4s

Article name:Beyoncé Knowles
beta en: 16.9s
en: 25.4s

Article name: India
beta en: 36.4s
en : 26.8s

Article name: Richard Nixon
beta en:16.2s
en: 9.9s

Article name:Europe
beta en: 26.8s
en: 28.3s

Article name: English language
beta en:23.7s
en: 18.2

I think although it is a small test it does show the trend. 

The computer running this test is an i7 quad core from the 3rd gen with 8G of ram, so shouldn't be any issue on this front. 

Would be glad to provide any other info needed.
Comment 2 Chris McMahon 2014-09-09 23:27:11 UTC
adding Ori for possible HHVM implications
Comment 3 matanya 2014-09-09 23:51:26 UTC
Adding timings in chromium 37 for comparison:


Article name:Barack Obama
beta en: 8.1s
en : 17.2s

Article name: Cat
beta en: 7.7s
en: 16.0s

Article name:Beyoncé Knowles
beta en: 5.1s
en: 7.5s

Article name: India
beta en: 4.8s
en : 5.6s

Article name: Richard Nixon
beta en:3.6s
en: 5.6s

Article name:Europe
beta en: 5.7s
en: 7.1s

Article name: English language
beta en:3.5s
en: 8.0s
Comment 4 Bryan Davis 2014-09-09 23:53:09 UTC
(In reply to matanya from comment #1)
> I'm using firefox 32 and did some tests on this on en,wikipedia, and beta
> en, which runs HHVM, but is on a virt cluster.

Comparing the time to execute of anything between beta and prod is comparing nothing of value. Different hardware, different cluster sizes (for cache, execute and db) and different code.

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