ports/161737: chromium 14.0.835.x stalls (probably javascript-related

[Luigi Rizzo]

>Number:         161737
>Category:       ports
>Synopsis:       chromium 14.0.835.x stalls (probably javascript-related
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Oct 17 11:50:04 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Luigi Rizzo
>Release:        FreeBSD 8.2 i386
>Organization:
UNIPI
>Environment:
System: FreeBSD 8.2-STABLE FreeBSD 8.2-STABLE #4: Fri Apr 22 16:22:53 CEST 2011 


>Description:

On both of my RELENG_8 machines, since i updated
from chromium 13.0.782.112 to 14.0.835.* I am experiencing
frequent stalls on most pages -- from gmail to google docs to
online forms for accessing various services, after a
short time the tab containing the page become insensitive to
keyboard and mouse input events for large amount of times
(from 30s to minutes) before processing them.

This does not affect just input: on some other sites
i am seeing mouse clicks being only partially
processed, i.e. the click causes part of the content to
be updated, but another part remain stale.
I am seeing this in particular on JS-based pages (99.99% these days).

Unfortunately this makes chromium unusable for services where
i cannot tolerate crashing the tab in the middle of a transaction
(bank, shops, reservations etc.)

Haven't done a deep investigation, but it worked fine with
13.0.782.112 and broke when i updated to 14.0.835.X (both versions).
The commit logs show some changes
(tcmalloc, v8) that might be related to what i am seeing.


>How-To-Repeat:
	open a spreadsheet in google docs, play with it for a while,
	until you'll see that keypresses and clicks are not
	processed anymore.
>Fix:
	no idea


>Release-Note:
>Audit-Trail:
>Unformatted: