LWN's unreliable predictions for 2022

Posted Jan 6, 2022 14:06 UTC (Thu) by geuder (guest, #62854)
In reply to: LWN's unreliable predictions for 2022 by rsidd
Parent article: LWN's unreliable predictions for 2022

Overheating incidents? Caused by X11?? I have honestly no idea what you are referring to.

LWN's unreliable predictions for 2022

Posted Jan 6, 2022 14:54 UTC (Thu) by rsidd (subscriber, #2582) [Link] (1 responses)

Empirical observation. My guess is, caused by Firefox running on X11. (Firefox CPU usage was huge under X11/i3, much much less under Sway)

LWN's unreliable predictions for 2022

Posted Jan 7, 2022 8:41 UTC (Fri) by geuder (guest, #62854) [Link]

Hmm, I use Firefox and xfwm4 under Xorg and don't have such observations. So i3 would make the difference? Doesn't sound too likely, it doesn't even use compositing does it and should also otherwise be really lightweight. Of course there can always be bugs / poor implementations. There are a million of parameters different between 2 systems, so it could be something completely different.

LWN's unreliable predictions for 2022

Posted Jan 6, 2022 17:43 UTC (Thu) by rahulsundaram (subscriber, #21946) [Link] (1 responses)

> Overheating incidents? Caused by X11?? I have honestly no idea what you are referring to.

It's not uncommon for users to report getting better battery performance in Wayland and this appears to be backed by benchmarks as well

https://www.phoronix.com/scan.php?page=news_item&px=G...

https://www.phoronix.com/scan.php?page=news_item&px=K...

LWN's unreliable predictions for 2022

Posted Jan 7, 2022 9:03 UTC (Fri) by geuder (guest, #62854) [Link]

Yes, average savings of some 20%, but heat incidents? At least my machine normally doesn't run so high load that 20% difference would be immediately noticeable. 20% may sound significant, but if the difference is between 20% and 16% of maximum consumption / heat dissipation it should be hardly observable.

Of course parallel builds and video encoding are different, but we didn't talk about such cases. The maximum consumption shown by these benchmarks looks very much unchanged.

LWN's unreliable predictions for 2022

Posted Jan 14, 2022 16:48 UTC (Fri) by geuder (guest, #62854) [Link]

> Overheating incidents? Caused by X11?? I have honestly no idea what you are referring to.

I stand corrected. Switched an Intel laptop from xfwm4 to i3 yesterday because I needed several windows nicely arranged for a certain task. And it did not take long until things started failing badly (repeatedly) and the log was full of throttling messages because of overheating and worse.

I have used i3 on a Ryzen desktop with Nvidia and AMD GPUs for years. This has never happened to me before.