Rob Owens wrote: > I recently had issues with iceweasel using 80% of my CPU. I tried > upgrading from 3.something to 10.something in the mozilla.debian.net > repos. That didn't fix it. > > I remembered that I had a kernel upgrade recently (from the backports > repo), and I had never rebooted. Rebooting fixed my iceweasel issue.
Firefox consumed 100% cpu? And it was repeatable? You likely hit the recent linux kernel leap second bug[1]. FWIW it hit me too. Perhaps humorously I didn't think it was a kernel mutex problem because Firefox has so often consumed 100% for no good reason. :-) Bob [1] https://lkml.org/lkml/2012/7/1/11
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