Maximum number of clients reached on X

Find out who is hogging your clients:

lsof -U +c 15 | cut -f1 -d' ' | sort | uniq -c | sort -rn | head -n 100

cf https://unix.stackexchange.com/questions/368017/cant-start-applications-due-to-maximum-number-of-clients-reached-error

Some further discussion: https://nixers.net/Thread-Maximum-number-of-clients-reached-on-X