@Claire @Gargron no worries. attached a screenshot of htop, I think it looks normal.
Here is the pstree output:
https://pastebin.com/85gcbN4Y
But when I pick a PID, I don't get much output from strace:
root@ubuntu:~# strace -p 2850
strace: Process 2850 attached
futex(0x56159724c270, FUTEX_WAIT_PRIVATE, 0, NULL
(unless I'm doing something wrong?)
@Claire @Gargron my strace doesn't really give much info: