Please tell your friends about federated social media site that speaks several fediverse protocols thus serving as a hub uniting them, hubzilla.eskimo.com, also check out friendica.eskimo.com, federated
macroblogging social media site, mastodon.eskimo.com a federated microblogging site, and yacy.eskimo.com an uncensored federated search engine. All Free!
Don't know what they've changed in the 5.15 kernel but it really sucks if it is compiled for full preemptiion, really bad context switching efficiency relative to 5.13. If non-preemptive it seems to fine.