The various services in PE require up to one file handle per connected client. On most OS configurations, the defaults will not be high enough for more than a couple hundred clients. To support more clients, you need to increase the number of allowed file handles.
You can increase the limits for the following services:
In each of the following examples, replace
<PE SERVICE> with the specific service you’re editing.
In addition, the “32768” limit can be changed as necessary.
With systemd, the number of open file handles allowed is controlled by a setting in the service file at
/usr/lib/systemd/system/<PE SERVICE>.service. To increase the limit, run the following commands, setting the
mkdir /etc/systemd/system/<PE SERVICE>.service.d echo "[Service] LimitNOFILE=32768" > /etc/systemd/system/<PE SERVICE>.service.d/limits.conf systemctl daemon-reload
You can confirm the change by running the following command:
systemctl show <PE SERVICE> | grep LimitNOFILE
For RedHat and Ubuntu systems, the number of open file handles allowed for is controlled by settings in the following service files:
In both cases, set the last line of the file as follows:
ulimit -n 32678
This sets the number of open files allowed at 32,678.
The ulimit controls the number of processes and file handles that the PE service user can open/process. To increase the ulimit for a PE service user, edit
/etc/security/limits.conf so that it contains the following:
<PE SERVICE USER> soft nofile 32768 <PE SERVICE USER> hard nofile 32768