<param name="rtp-timeout-sec" value="300"/> change to <param name="rtp-timeout-sec" value="0"/> or <param name="rtp-timeout-sec" value="zero"/>? From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Guillermo Ruiz Camauer Sent: Friday, June 27, 2014 11:38 AM To: FreeSWITCH Users Help Subject: Re: [Freeswitch-users] Problems with RTP delay at around 300 concurrent calls Ali, What benefits and or consecuences does setting rtp-timer-name to none and rtp-timeout-sec to zero bring about? Thanks, Guillermo On Fri, Jun 27, 2014 at 9:09 AM, Ali Pey <alipey@gmail.com <mailto:alipey@gmail.com> > wrote: Hi David, Yes, we have done more than 1000 concurrent calls. Here are a few things we needed to do: 1) Add the following to /etc/security/limits.conf * hard nofile 65536 * soft nofile 65536 root hard nofile 65536 root soft nofile 65536 freeswitch hard stack 10240 freeswitch soft stack 244 freeswitch hard nproc unlimited freeswitch soft nproc unlimited 2) Add the followings to /etc/init.d/freeswitch ulimit -c unlimited ulimit -d unlimited ulimit -f unlimited ulimit -i unlimited ulimit -n 999999 ulimit -q unlimited ulimit -u unlimited ulimit -v unlimited ulimit -x unlimited ulimit -s 240 ulimit -l unlimited 3) Set rtp-timer-name to none and rtp-timeout-sec to zero in your sip profile. Regards, Ali Pey On Tue, Jun 24, 2014 at 3:42 PM, Guillermo Ruiz Camauer <grcamauer@gmail.com <mailto:grcamauer@gmail.com> > wrote: Have you tried spreading the calls over more than 1 SIP profile? Each SIP profile gets its own thread. Also, is this all within your LAN? No firewalls/filters? Are you sure you are linking at 1Gbps, full duplex? Guillermo On Sat, Jun 7, 2014 at 2:22 PM, D D <tru083@yahoo.com <mailto:tru083@yahoo.com> > wrote: Hi, I would like to put 500 - 1000 calls into a FS system. I have a Dell R900 server with these properties: 8 processors at 2.40GHz 8GB RAM Gigabit ethernet I use sipp to send RTP streams. I use the FS settings recommended here: https://wiki.freeswitch.org/wiki/Performance_testing_and_configurations <https://contactmonkey.com/api/tracker?cm_session=c6e7bb42-d00d-46cc-bfdd-e3072b818af8&cm_type=link&cm_link=7e360a1f-cf3a-4b18-86e3-239b2604c34b&cm_destination=https://wiki.freeswitch.org/wiki/Performance_testing_and_configurations> including the in-memory core.db. I also have used the "-rp" and "-nosql" settings on the FS command-line, and also used the "chrt" command to increase the priority to real-time. In all cases, at around 300 concurrent calls, the RTP inter-packet delay becomes unacceptably high. The voice quality is severely impacted. During the test, the CPU is not overloaded. It is using only about 1.5 of the 8 processors. Are these results expected? Has anyone gone higher than 300 concurrent calls? Is there anything else that I can do with configuration to improve throughput? 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