FS#37318 - [firefox] Slowdowns and high CPU usage with Flash/HTML5 video and heavy mouse movement

Attached to Project: Arch Linux
Opened by Christopher Reimer (CReimer) - Sunday, 13 October 2013, 15:08 GMT
Last edited by Allan McRae (Allan) - Thursday, 02 January 2014, 05:11 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Ionut Biru (wonder)
Architecture x86_64
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

I experience a weird problem on my desktop system. And it seems to be graphics vendor dependend.

Steps to reproduce:

Use a NVIDIA graphics card (Tested with Geforce 9600GT and Geforce GT520)
Use either nvidia or nouveau (No difference)
Start a youtube video and move the mouse fast in circles over the video.
The video begins to stutter and the CPU load rises up to 100%.


If I try the same on my laptop (Intel graphics) the problem doesn't appear.

If I try this with Mozilla's 64bit builds of Firefox 24.0 the problem doesn't appear, too.
This task depends upon

Closed by  Allan McRae (Allan)
Thursday, 02 January 2014, 05:11 GMT
Reason for closing:  None
Additional comments about closing:  Submitter comment: Upstream problem or broken hardware.
Comment by Vlad Seghete (vlsd) - Monday, 14 October 2013, 17:10 GMT
Might be unrelated, but recently YouTube started failing to play videos within several seconds of starting.
Comment by Christopher Reimer (CReimer) - Monday, 14 October 2013, 17:44 GMT
Yes. I think that's unrelated.

BTW:

desktop System: AMD CPU
laptop System: Intel CPU

I tried to compile firefox on my desktop system. But it crashes while linking.
Without PGO compilation works. And at the moment my problem seems to be fixed.

But that needs further testing.
Comment by Christopher Reimer (CReimer) - Tuesday, 15 October 2013, 21:08 GMT
OK. It has nothing to do with PGO. I have absolutely no idea. Help...
Comment by Christopher Reimer (CReimer) - Monday, 09 December 2013, 11:31 GMT
Update: It also happens with Mozilla builds.
As this happens infrequent i just thought Mozilla builds are fine.

Now I tried the desktop Harddrive in another AMD system (Sempron 2700+ and Geforce 630GT).
There's everything alright.

Could that be a rare production fault? Which part of my hardware is broken?
Already tested the graphics card in the Sempron system. That one is OK.
RAM, CPU, mainboard?
Comment by Christopher Reimer (CReimer) - Tuesday, 10 December 2013, 10:38 GMT
OK. If anyone is still interested.
Further investigation shows, that this problem also effects the two systems which do not show the video problems

I think the video slowdowns are a sideeffect of the high CPU usage.
Moving my mouse very fast produces a CPU load of 40-60%

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