78019 - Some images loaded from server, but they should be in cache

Status: RESOLVED FIXED

(Core :: Graphics: ImageLib, defect)

Description

[John Morrison]

Overview Description: 
 Running a simplified version of i-bench, on a second (and subsequent)
 load of the documents, with a caching policy of 'Once per session', 
 I still see the following images being fetched again.

 Edited HTTP server log (Apache):

 23:30:52  "GET /zdnet2/loadspeed/allimages/50.gif HTTP/1.1" 200 3720
 23:31:15  "GET /zdnet2/loadspeed/allimages/3.gif HTTP/1.1" 200 3181
 23:31:20  "GET /zdnet2/loadspeed/allimages/92.gif HTTP/1.1" 200 4180
 23:31:22  "GET /zdnet2/loadspeed/allimages/2.gif HTTP/1.1" 200 3653
 23:31:24  "GET /zdnet2/loadspeed/allimages/10.gif HTTP/1.1" 200 4347
 23:31:26  "GET /zdnet2/loadspeed/allimages/50.gif HTTP/1.1" 200 3720
 23:31:48  "GET /zdnet2/loadspeed/allimages/3.gif HTTP/1.1" 200 3181
 23:31:53  "GET /zdnet2/loadspeed/allimages/92.gif HTTP/1.1" 200 4180
 23:31:56  "GET /zdnet2/loadspeed/allimages/2.gif HTTP/1.1" 200 3653

Steps to Reproduce: 

1) Go to http://jrgm/zdnet2 with a new/emptied cache, and run the app.

2) do 'tail -f /etc/httpd/logs/access_log |grep /zdnet2/' to see what 
   is requested and you will see those images being loaded on each 
   cycle.

Actual Results: images that should be in the cache are reloaded

Expected Results: shouldn't need to reload these images, given the 
                  situation.

Reproducibility: 100%

Additional Information: 

I looked for a simpler way to reproduce this, or a reason why those images
need to be reloaded, but could find neither.

These image URLs are all loaded by more than one document in the test.  I set
up some cache headers for html documents in another directory, so I could get
the document URL's to show up along with the image URL's (i.e., which document
is wrongly loading which image file). This is that list:

/zdnet2/loadspeed/anchor-storybuildabetterwebsite.htm
  -- loads --> /zdnet2/loadspeed/allimages/10.gif
 
/zdnet2/loadspeed/pcm-analysis.htm
  -- loads --> /zdnet2/loadspeed/allimages/50.gif
 
/zdnet2/loadspeed/zdnet-compaqpresario5900zoverview.htm
  -- loads --> /zdnet2/loadspeed/allimages/3.gif
 
/zdnet2/loadspeed/zdnet-enterprisehowdoesitdoallthat.htm
  -- loads --> /zdnet2/loadspeed/allimages/92.gif
 
/zdnet2/loadspeed/zdnet-newsprotestersact.htm
  -- loads --> /zdnet2/loadspeed/allimages/2.gif

Comment 1

[Matthijs Sypkens Smit]

I'm not sure if this is a related bug or how to make sure that what I suspect is
happening. Sorry for vagueness.

I have a page (http://www.sv-irene.nl/) with a menu that uses images that are
changed with JavaScript when the cursor is over them. No problem there, unless
when I hit Shift-reload with mozilla 0.9.4. Thereafter anytime the picture is
changed it's fetched from the server instead of from the cache.

Comment 2

[Asa Dotzler [:asa]]

Bugs targeted at mozilla1.0 without the mozilla1.0 keyword moved to mozilla1.0.1 
(you can query for this string to delete spam or retrieve the list of bugs I've 
moved)

Comment 3

[Asa Dotzler [:asa]]

don't move bugs that are in the 1.0 dependency tree. sorry.

Comment 4

[Stuart Parmenter]

fixed