[Freeswitch-users] minimum UDP packet size

[David Ponzone]

65MB ?

David Ponzone  Direction Technique
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Le 01/02/2011 à 16:27, Madovsky a écrit :

> 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 at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org]Namens Madovsky
> Verzonden: maandag 31 januari 2011 18:29
> Aan: freeswitch-users at 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
> 
> 
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