Created attachment 830458 [details] profile.txt I got a link today which caused my Firefox instance to use more than 100% of CPU load on my quad core box. Peak was around 240% for a couple of seconds. I did a sysprof run and exported the profile. As it looks like most of the time is spent in MediaDecoderStateMachine. Interestingly no media file is getting played when loading the page.
This may be related to bug 933856.
Henrik, can you tell if this is a dupe of bug 933856?
see comment 2
Component: Audio/Video → Audio/Video: Playback
Sorry for responding that late. I totally missed the ni request. I think at the time when it happened it was an ad which was displayed. There is no way to reproduce this bug anymore and given that there is no minimized testcase available I cannot say for sure if it is a dupe. So I mark it as WFM.
Status: NEW → RESOLVED
Last Resolved: 2 years ago
Resolution: --- → WORKSFORME
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