Closed Bug 123155 Opened 23 years ago Closed 22 years ago

Mozilla eats up CPU

Categories

(Core Graveyard :: GFX, defect, P2)

Product:
Core Graveyard
Component:
GFX
Type:
defect

Tracking

(Not tracked)

Status:
RESOLVED DUPLICATE of bug 110113
Milestone:
Future

People

(Reporter: braden, Assigned: kmcclusk)

References

(
URL
)

Details

(Keywords: crash, perf, testcase)

Attachments

(3 files, 1 obsolete file)

First sample image.
108.20 KB, image/png
Details
Second sample image
750 bytes, image/png
Details
Test case.
484 bytes, text/html
Details 
Something about this page is making Mozilla peg the CPU.
confirming using build 2002020103 on Win2k.
OS -> All.
This is because of background images (guess they use alpha as they're png-based)
defined in semblance.css:

html {
  background-image: url("fade-to-gnome.png");
[...]
body {
  background-image: url("fade-to-grid.png");

Loading site without these images make it work fine (CPU remains at 10 to 0%).

Dupe of bug 96633, bug 90198 ?
Keywords: perf
OS: Linux → All
I'm seeing the same behavior on build 2002020208 PC/Linux.
We spend most of that CPU time inside:

510   48.6%     nsImageGTK::DrawComposited32
153   14.6%     readv
152   14.5%     gdk_rgb_convert_0888

on Linux.
Assignee: asa → kmcclusk
Component: Browser-General → Compositor
QA Contact: doronr → petersen
Target Milestone: --- → mozilla1.1
Bulk moving Mozilla1.2 bugs to future-P2. I will pull from this list when
scheduling post Mozilla1.0 work.
Priority: -- → P2
Target Milestone: mozilla1.1 → Future
Bulk moving Mozilla1.1 bugs to future-P2. I will pull from this list when
scheduling post Mozilla1.0 work.
Using build 2002041903 on win-xp,1.1ghz,512RAM,32MB GeForce2 Go the site is 
unusable (mouse-cursor is hog & jumps around when moving)


Same on Windows 2000 and Mac OS 9, changing Platform to All.
Hardware: PC → All
I've observed loading this page precipitating a crash; though I haven't been
able to nail down the precise circumstances under which the crash will occur.
Severity: major → critical
Keywords: crash
could patch for bug 143046 help a little (eventhough it doesn't seem to affect
PNGs) ?
This is weird... A week ago I did have problems loading this page, but today
(1/14/03)it loads like a charm on all platforms (Linux, Win XP and MacOS9)using
the 1/08/09 Trunk builds. I wonder if this is not a networking/server problem,
because the page, even with remote URLs, loads quickly as a test case. See
attached testcase.
Keywords: testcase
Attached file testcase (obsolete) — 

    
    

    
  
Yes, I changed the page. I'll work up a testcase.


    
    

    
  
Carine: What are you testing in your testcase? This is an image compositor bug.


    
    

    
  

      
      
      
      

        Attached image
          
        First sample image.
        — 
      

    


  

    
    

    
  

      
      
      
      

        Attached image
          
        Second sample image
        — 
      

    


  

    
    

    
  

      
      
      
      

        Attached file
          
        Test case.
        — 
      

    


  

    
    

    
  
Comment on attachment 111531 [details]
testcase

Please don't zip test cases.

        Attachment #111531 -
        Attachment is obsolete: true

    
    

    
  

*** This bug has been marked as a duplicate of 110113 ***
Status: NEW → RESOLVED
Closed: 22 years ago
Resolution: --- → DUPLICATE
Product: Core → Core Graveyard

    
    

    
      
  

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