Too many open files

when i open Lutris and then LOL client , this happening. And game never work good. I tried many things but never can change the open file limit. How can fix this ?

Waiting on children
Waiting on children
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
esync: write: Bad file descriptor
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
esync: write: Bad file descriptor
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files
eventfd: Too many open files 

also there is my limits info

~$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 15106
max locked memory (kbytes, -l) 16384
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 15106
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited 

2 Answers

When the "Too Many Open Files" error message is written to the logs, it indicates that all available file handles for the process have been used (this includes sockets as well).

In a majority of cases, this is the result of file handles being leaked by some part of the application.ulimit is a command in Unix/Linux which allows to set system limits for all properties. In your case, you need to increase the maximum number of open files to a large number (e.g. 1000000):

ulimit -n 1000000

or

sysctl -w fs.file-max=1000000

and /etc/security/limits.conf or /etc/sysctl.conf change:

fs.file-max = 1000000

To determine if the number of open files is growing over a period of time, issue lsof to report the open files against a PID on a periodic basis. For example:

lsof -p [PID] -r [interval in seconds, 1800 for 30 minutes] > lsof.out

This is especially useful if you don't have access to the lsof command:

ls -al /proc/PID/fd

Guidelines for setting ulimits

Run

less /proc/PID/limits

to check the actual Soft Limit of Max open files. If you set up ulimits but the actual number is still low - review how you launch the process. E.g., systemd takes over the ulimits, and you should use explicit settings, better at the process level, to ensure your program gets the runtime limits it needs.