[Freeswitch-users] FreeSWITCH under the Linux 2.6.29 kernel

[Karl Vesterling]

Folks;

Bear in mind that  the frequency is (X)Hz  * (num cores), hence saying  
100Hz on a dual core winds up being 200Hz.

My setup is 250Hz on a Dual-Core and the quality is perfect.

Oh, btw folks, don't attempt to do anything involving QOS (be it TBF,  
CBQ, HTB, or whatnot) on anything less than kernel 2.6.28.4

I don't know why exactly that is, but extensive testing here in the  
lab showed that this was entirely FUBAR until 2.6.25.7 where it got  
better, but not perfect until 2.6.28.4
(I may not be exact on the revisions, but close enough...)

There's also some options in the kernel that you must disable (not  
compile in) if you expect packet shaping to work.

If there's interest in this, e-mail me directly and I'll see if I can  
toss it into the FS Wiki some time this upcoming weekend.


Best Regards,
Karl J. Vesterling
kjv at ken-ton.com
202-461-3231 x0

On May 9, 2009, at 2:14 AM, Jason White wrote:

> Pablo Hernan Saro <pablosaro at gmail.com> wrote:
>
>> IMHO, it is related with the following kernel options: CONFIG_HZ,
>> CONFIG_NO_HZ and CONFIG_HIGH_RES_TIMERS.
>> Take a look at those options in your kernel and try modifying them  
>> until get
>> the desired result. Google that options and you will find lots of
>> discussions that will clarify your mind. Here you will find a simple
>> explanation: http://www.smk.co.za/2007/07/21/a-tickless-kernel/
>
> Thank you for the references. I think I'll modify my kernel  
> parameters in the
> grub configuration, since I am using Debian kernels at the moment.  
> (I do know
> how to compile my own, which I will gladly do if it becomes  
> necessary).
>
>
>
> _______________________________________________
> Freeswitch-users mailing list
> Freeswitch-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20090511/3adf0b98/attachment-0002.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: PGP.sig
Type: application/pgp-signature
Size: 833 bytes
Desc: This is a digitally signed message part
Url : http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20090511/3adf0b98/attachment-0002.bin