No my question is minimum udp. usually the max udp packet is around 65000kB, David was talking about MTU which is different (Max Transmit Unit which is usually 1500 over the net, but ins some internal network (as my cluster) I use jumbo frames (9000) with 1GB network cards. by default linux kernel UDP min packet is set to 4096. I made some tests, from 1024 to 65000 and the server behavior looks like more cool when packet is big, but I'm almost sure that it creates also more latency in case of audio data. I'm finally happy to use exactly the same rate as MTU, performance seems to be better in multitask. ----- Original Message ----- From: Erik Dekkers To: 'FreeSWITCH Users Help' Sent: Tuesday, February 01, 2011 4:28 AM Subject: Re: [Freeswitch-users] minimum UDP packet size You probably mean a MAXimum size. If you set a minimum size it would always fragment. As far as I know it itsn't possible to set a maximum size of a UDP packet. If the UDP packets are getting too large you really should trim down SIP headers / Remove codecs from the SDP. There are some articles on the internet concerning MTU and SIP. Erik Van: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] Namens Madovsky Verzonden: maandag 31 januari 2011 18:29 Aan: freeswitch-users@lists.freeswitch.org Onderwerp: [Freeswitch-users] minimum UDP packet size is it useful to set minimum UDP pakcet to the MTU rate like 1500 and avoid any fragmentation ? Thanks ------------------------------------------------------------------------------ _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org