Closed Bug 169919 Opened 22 years ago Closed 22 years ago

Midi files causes CPU to slow; mozilla process goes to 97% CPU

Categories

(Core Graveyard :: Plug-ins, defect)

x86
Windows XP
defect
Not set
normal

Tracking

(Not tracked)

RESOLVED INVALID

People

(Reporter: brad.kruse, Assigned: rubydoo123)

References

()

Details

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.2b) Gecko/20020919
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.2b) Gecko/20020919

I experienced a severe loading of my CPU, gradually increasing the load to
saturation, over a period of 2-4 minutes. 

My PC is a 1.6 GHz HP 7955, with 256 MByte memory and 7 GB free of 32 GBytes.


 

Reproducible: Always

Steps to Reproduce:
1.  Open a new tab; load this *annoying* midi file (Please don't ask why I
grabbed it).  http://www.draftresource.com/midis/getme.mid
2.  Hit the || pause button on the displayed midi tool, or just wait while the
MIDI file plays to the end.

The system slowdown takes a minute or two longer if I don't hit pause, just let
the file play to completion.   

The slowdown resolves immediately when I 'x' delete the tab I opened the MIDI
file in, or just enter a new URL and wait for the system to eventually respond
by loading the new URL.

Actual Results:  
After a minute or two I notice that computer and Mozilla response gets jerky. 
By about 4 minutes the system is next thing to unusable.  The processes list
shows mozilla pulling ~97% CPU.

Expected Results:  
No change in response to mouse, or any slowdown of other applications or
processes, including system response to <ctrl>+<alt>+<del> to invoke the Windows
Task Manager.

I am using the QuickTime 6.0 plugins, npqtplugin2.dll
This may be related to bug 162651, "CPU overloads and does not play MIDI". My
MIDI file played.
using stand alone QuickTime 6.0 on w2k I've got the same result ~100% load, I've
tried several *.mid files,
so this is QT6.0 problem not mozilla.
marking invalid, then
Status: UNCONFIRMED → RESOLVED
Closed: 22 years ago
Resolution: --- → INVALID
Product: Core → Core Graveyard
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