Too many open files despite config adjustments

Community Support
19

Seems like apache is the issue:

$ sudo lsof | awk '{print $1}' | sort | uniq -c | sort -h | tail -5
   2809 exim4
   8138 named
  15657 nginx
  24092 mariadbd
  65246 apache2

But raising the limit in the apache2 Service config did not help…

And I am not sure whether such a number of open files is even reasonable?