49097 - optimize image cache

Status: VERIFIED DUPLICATE of bug 41268

(Core :: Graphics: ImageLib, defect, P3)

Description

[Syd Logan]

Decision was made to reduce memory footprint further by not storing image data 
in image cache except for chrome images, JS images, images used for printing, or 
"Synth Document" images.

Fix is to add a check for these types in the image cache code when a request to 
add the image to a cache is made, and to not add to the cache unless it is one 
of these types.

Comment 1

[Syd Logan]

http://bugzilla.mozilla.org/show_bug.cgi?id=46704 is nsbeta3+, so this should be 
too.

Comment 2

[pnunn]

changing summary from:
Don't cache images unless chrome, printing, JS, or Synth document
to:
optimize image cache.

Based on the data gathered by Syd on chrome storage in the image cache, the 
perf/footprint team globally decided to not remove image caching
on images that do not specifically need it.
-p

Comment 3

[pnunn]

After many discussions, we have decided to implement
keeping chrome images in the imgcache, and caching chrome
animations.

Both have separate bugs. I'm marking this bug as a dupe
of #41268(caching chrome animations) as the bug for keeping
chrome in the imgcache has been fixed and closed.

-p

*** This bug has been marked as a duplicate of 41268 ***

Comment 4

[Paul Wyskoczka]

Verified as a duplicate