On 01/06/2022 01:34, David C. Rankin wrote:
Bug opened with Mozilla, feel free to add supporting details if you have them:
Tbird 91esr Continual High CPU Usage - EAGAIN (Resource temporarily unavailable) https://bugzilla.mozilla.org/show_bug.cgi?id=1772023
I can't understand if I'm witnessing two entirely different issues or two that are somehow related. It's just strange that both have started around the same time, a few weeks ago, and both only occur with Mozilla software. If Thunderbird was causing the majority of the grief before, it seems most of my issues are now with Firefox, specifically when using YouTube. I found a related bug report: https://bugzilla.mozilla.org/show_bug.cgi?id=1560728 That then links to another: https://bugzilla.mozilla.org/show_bug.cgi?id=1539043 Both of those date back two of three years, however, and I didn't start seeing this problem until recently, always keeping my 15.3 system up-to-date with latest Firefox ESR. Apparently the AV1 video codec is the culprit, and the latter report contains a comment saying to go into YouTube settings and select AV1 only for lower resolution videos, leaving VP9 for HD and higher resolutions. I've done that, but it doesn't really seem to have had any effect. The fan spins up wildly on every video I try to view. If I download the HD video and watch in Dragon Player or VLC the PC is completely silent. Almost nothing else ever spins up the CPU to noisy level on this machine. gumb