(replying to myself as I got a message on irc from the author)
Dominique Martinet wrote on Wed, Nov 24, 2021 at 07:28:25AM +0900:
I see now that it has IOSchedulingClass=IDLE but nothing equivalent
about CPU, but I don't think that'll help: if the computer is mostly
idle it'll still use all the cores (and increase cpufreq automatically)
for long enough to heat up and make the fans kick in.
I seem to have misremembered this part: it is single core.
(doesn't change much as far as cpufreq/heat is concerned though)
Also, it had been a while but it has actually gotten much better after I
added /.snapshots and similar paths to PRUNEPATHS, so this isn't as much
of a problem as I remembered, but could still be a problem for large
filesystems
I don't think there is a laptop friendly scheduler that says if
this
task is niced then keep the cpufreq at its minimum, is there?
I've been manually fiddling with my cpufreqs' scaling_max_freq just low
enough to not trigger the fans but it sounds like overengineering to
me...
Still interested if anyone knows how to do this!
--
Dominique