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<DIV><FONT size=2>No my question is minimum udp.</FONT></DIV>
<DIV><FONT size=2>usually the max udp packet is around 65000kB,</FONT></DIV>
<DIV><FONT size=2>David was talking about MTU which is different (Max Transmit
Unit</FONT></DIV>
<DIV><FONT size=2>which is usually 1500 over the net, but ins some internal
network (as my cluster)</FONT></DIV>
<DIV><FONT size=2>I use jumbo frames (9000) with 1GB network cards.</FONT></DIV>
<DIV><FONT size=2>by default linux kernel UDP min packet is set to
4096.</FONT></DIV>
<DIV><FONT size=2>I made some tests, from 1024 to 65000 and the server behavior
looks like more</FONT></DIV>
<DIV><FONT size=2>cool when packet is big, but I'm almost sure that it creates
also more latency in case</FONT></DIV>
<DIV><FONT size=2>of audio data. I'm finally happy to use exactly the same rate
as MTU, performance</FONT></DIV>
<DIV><FONT size=2>seems to be better in multitask.</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=erik.dekkers@wvds.nl href="mailto:erik.dekkers@wvds.nl">Erik
Dekkers</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=freeswitch-users@lists.freeswitch.org
href="mailto:freeswitch-users@lists.freeswitch.org">'FreeSWITCH Users
Help'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, February 01, 2011 4:28
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Freeswitch-users] minimum
UDP packet size</DIV>
<DIV><BR></DIV>
<DIV class=WordSection1>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US>You probably mean a MAXimum size. If you set a minimum size it
would always fragment.</SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US>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.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US>There are some articles on the internet concerning MTU and
SIP.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US>Erik<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US><o:p> </o:p></SPAN></P>
<DIV>
<DIV
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">Van:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> <A
href="mailto:freeswitch-users-bounces@lists.freeswitch.org">freeswitch-users-bounces@lists.freeswitch.org</A>
[mailto:freeswitch-users-bounces@lists.freeswitch.org] <B>Namens
</B>Madovsky<BR><B>Verzonden:</B> maandag 31 januari 2011 18:29<BR><B>Aan:</B>
freeswitch-users@lists.freeswitch.org<BR><B>Onderwerp:</B> [Freeswitch-users]
minimum UDP packet size<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">is it useful to set minimum
UDP pakcet to the</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">MTU rate like 1500 and avoid
any fragmentation ?</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt">Thanks</SPAN><o:p></o:p></P></DIV></DIV>
<P>
<HR>
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