Hi All This is happening in same pattern after 2 days.A restart service solve the issues. I tried v1.6 , v1.8, v1.10 same behavior. Can someone help me to find the correct direction. Attached following command output. top -b -H -p `cat /usr/local/freeswitch/run/freeswitch.pid` -n 1 Machine have 42 GB memory. When I look into this output I assume freeswitch use 79g memory. Looks like not enough memory. Am I correct? Even I increase the memory some thing happening after 2 days. I tried physical vs virtual esxi same pattern problem How to solve this problem? Can someone point the correct direction. The following is startup script. Any suggestions? *Start up script* /etc/systemd/system/freeswitch.service ; This file in installations built from Master can be found in ; /usr/src/freeswitch.git/debian ; or ; /usr/src/freeswitch/debian [Unit] Description=freeswitch After=syslog.target network.target local-fs.target mysql.service apache2.service [Service] ; service Type=forking PIDFile=/usr/local/freeswitch/run/freeswitch.pid ;PermissionsStartOnly=true ; blank ExecStart= line flushes the list ExecStart= Environment="USER=freeswitch" Environment="GROUP=freeswitch" ExecStart=/usr/local/freeswitch/bin/freeswitch -u freeswitch -g freeswitch -nc TimeoutSec=45s Restart=always ; exec WorkingDirectory=/usr/local/freeswitch/bin ;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 ;NoNewPrivileges=false [Install] WantedBy=multi-user.target