598442 - nsHandlerService.js:941 -- unresponsive script when pasting into message compose

Status: RESOLVED DUPLICATE of bug 544596

(Thunderbird :: Message Compose Window, defect)

Description

[Philip Prindeville]

I routinely have to cut&paste logs of a thousand lines or more from port scans, etc. into abuse complaints.

When I do so, I notice that T (3.1.3) becomes sluggish, and occasionally I'll get the spinning colorwheel (I'm on a macbook) for minutes at a time.  The bottom of the compose window will read "Assembling mail information."

Eventually the popup dialog reading:

"Warning: Unresponsive script

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: file:///Applications/Thunderbird.app/Contents/MacOS/components/nsHandlerService.js:941"

etc.  The ironic thing is that whether I click on the [Stop script] or [Continue] buttons makes no difference.  The behavior is the same.

The dialog will go away, and then after 30 or more seconds the dialog appears again.

If the script had been stopped, why is it still being unresponsive.

Also, why would "assembling mail information" take a non-linear amount of time based on the size of the message?

And why did this bug only start showing up in 3.x?

Comment 1

[Wayne Mery (:wsmwk)]

Philip, were you previously on 3.0 and it didn't happen in 3.0?

starting in version 3.1,  "unresponsive script" is showing in many areas. So seeing this error message while composing doesn't necessarily implicate compose or nsHandlerService.js   And large paste is historically a bad performer to start.

Comment 2

[Philip Prindeville]

(In reply to comment #1)
> Philip, were you previously on 3.0 and it didn't happen in 3.0?
> 
> starting in version 3.1,  "unresponsive script" is showing in many areas. So
> seeing this error message while composing doesn't necessarily implicate compose
> or nsHandlerService.js   And large paste is historically a bad performer to
> start.

It seems to me that this predates 3.1, but I'm not 100% certain.

Comment 3

[Wayne Mery (:wsmwk)]

actually, this may be a less severe example of bug 544596

https://bugzilla.mozilla.org/buglist.cgi?type1-0-0=substring&short_desc=paste%20pasti&field0-0-0=component&bug_severity=critical&bug_severity=major&bug_severity=normal&bug_severity=minor&type0-0-1=substring&field0-0-1=keywords&type1-0-1=anywords&value1-0-1=hang%20perf&classification=Client%20Software&classification=Components&chfieldto=Now&query_format=advanced&chfieldfrom=2y&value1-0-0=slow&short_desc_type=anywordssubstr&type0-0-0=nowordssubstr&value0-0-0=book%20location&field1-0-0=short_desc&product=Core&product=Firefox&product=MailNews%20Core&product=Thunderbird&field1-0-1=keywords