564053 - High CPU load while typing in to text box on certain website with Operator Add-on

Status: RESOLVED WONTFIX

(Mozilla Labs :: Operator, defect)

Description

[Paul Bryson]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( .NET CLR 3.5.30729)
Build Identifier: 0.9.5.1

While trying to type in to the comments text box on Ars Technica, the Firefox process uses available CPU, and the appearance of text noticeable lags the typing.  Disabling the Operator extension causes the issue to go away.

Reproducible: Always

Steps to Reproduce:
1. Visit article on ArsTechnica.com
2. Begin typing in to the reply textarea of the comments section
3. Watch as CPU spikes with key presses and as text lags input.
Actual Results:  
As soon as you stop typing, the CPU load disappears.

Expected Results:  
CPU load should have been negligible for simple typing.

Comment 1

[Mike Kaply [:mkaply]]

Do you have any of the Operator preferences turned on? Like listen for all change events?

Comment 2

[Paul Bryson]

Only the defaults.  The ones checked are:
Use descriptive names for data formats
Display icon in status bar
Display icon on location bar
Remove duplicates

Comment 3

[Mike Kaply [:mkaply]]

Operator isn't supported anymore.