;;;;; Author: Travis Cross [Unit] Description=freeswitch Requires=syslog.socket network.target local-fs.target After=syslog.socket network.target local-fs.target [Service] ; service Type=forking PIDFile=/run/freeswitch/freeswitch.pid Environment="DAEMON_OPTS=-nonat" EnvironmentFile=-/etc/default/freeswitch ExecStart=/usr/bin/freeswitch -u freeswitch -g freeswitch -ncwait $DAEMON_OPTS TimeoutSec=45s Restart=always ; exec User=root Group=daemon LimitCORE=infinity LimitNOFILE=100000 LimitNPROC=60000 LimitSTACK=250000 LimitRTPRIO=infinity LimitRTTIME=infinity IOSchedulingClass=realtime IOSchedulingPriority=2 CPUSchedulingPolicy=rr CPUSchedulingPriority=89 UMask=0007 ; alternatives which you can enforce by placing a unit drop-in into ; /etc/systemd/system/freeswitch.service.d/*.conf: ; ; User=freeswitch ; Group=freeswitch ; ExecStart= ; ExecStart=/usr/bin/freeswitch -ncwait -nonat -rp ; ; empty ExecStart is required to flush the list. ; ; if your filesystem supports extended attributes, execute ; setcap 'cap_net_bind_service,cap_sys_nice=+ep' /usr/bin/freeswitch ; this will also allow socket binding on low ports ; ; otherwise, remove the -rp option from ExecStart and ; add these lines to give real-time priority to the process: ; ; PermissionsStartOnly=true ; ExecStartPost=/bin/chrt -f -p 1 $MAINPID ; ; execute "systemctl daemon-reload" after editing the unit files. [Install] WantedBy=multi-user.target