726145 - Displaying large images make firefox slow

Status: NEW

(Core :: Graphics: ImageLib, defect)

Description

[Black_Ps`]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0
Build ID: 20120208012847

Steps to reproduce:

Large pictures like
http://img190.imageshack.us/img190/8199/nuactaa2landscape.jpg
http://img585.imageshack.us/img585/3719/stopactaa2landscape.jpg
http://img861.imageshack.us/img861/5589/stopactaa2landscape3.jpg
Makes firefox to load them very slow and not working normally.

Comment 1

[Tim (fmdeveloper)]

WFM - Mozilla/5.0 (Windows NT 5.1; rv:13.0a1) Gecko/20120212 Firefox/13.0a1 ID:20120212031149

Can you capture the output of about:memory when you experience the slowness?

Comment 2

[Black_Ps`]

Do you need all the page that is in about:memory?

Comment 3

[Black_Ps`]

Attachment: when loading images

Comment 4

[Black_Ps`]

Attachment: after loaded images

Comment 5

[Tim (fmdeveloper)]

The whole contents of about:memory is needed. Do the following

Close all tabs
Open about:memory
Click on the GC button
Copy contents to a text file and attach to this bug as before
Open the image URL
Go back to about:memory
Click the update button
Copy contents to a text file and attach to this bug as after

Comment 6

[Black_Ps`]

Attachment: no tabs open

Comment 7

[Black_Ps`]

Attachment: after loaded images the 3 images in 3 tabs

Comment 8

[Paul Silaghi, QA [:pauly]]

These images are very big, I think it's normal to load them a little slower. Indeed Chrome load them faster then Firefox.

Comment 9

[Paul Silaghi, QA [:pauly]]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0

Comment 10

[Jim Mathies [:jimm]]

(In reply to Paul Silaghi [QA] from comment #8)
> These images are very big, I think it's normal to load them a little slower.
> Indeed Chrome load them faster then Firefox.

Chrome definitely loads these faster. Also, in my test our UI froze up during the load while Chrome remained responsive.

Moving to image component initially.

Comment 11

[Justin Lebar (not reading bugmail)]

> Also, in my test our UI froze up during the load while Chrome remained responsive.

Really?  My whole UI is quite responsive while loading the image.

Comment 12

[Jim Mathies [:jimm]]

(In reply to Justin Lebar [:jlebar] from comment #11)
> > Also, in my test our UI froze up during the load while Chrome remained responsive.
> 
> Really?  My whole UI is quite responsive while loading the image.

after clearing my cache to force a reload - yep, completely unresponsive.

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20120309 Firefox/13.0a1

Comment 13

[Justin Lebar (not reading bugmail)]

> after clearing my cache to force a reload - yep, completely unresponsive.

I just tried on my crappy Windows XP netbook, and it's quite responsive while loading the image from a clean cache.  I can scroll, switch tabs, type, and navigate other tabs.

Maybe HW accel is killing you?  I don't have HW accel on this machine.