[OpenSIPS-Users] Packet Loss and its Solution

[Sammy Govind]

Hi Faisal,

Can you copy/paste the stats of "ifconfig eth*N*" on which traffic is
terminating. I just wanted to see the error and dropped packets on physical
interface.
Hardware and physical connectivity plays major role in packet
losses.On*Asterisk server
* Jitter options might help you but this is media-proxy, I assume from the
interface you are viewing, the packets are shown as lost. So could it be
heavy media traffic flowing through the interface and media proxy is unable
to use much CPU processing power to process all the RTPs ?

Before troubleshooting the software application I suggest start digging the
networking interfaces and tweak the eth*N and *related properties of kernel
to maximize the throughput.

This would be just how I'd go with this kind of problem.

Regards.
Sammy


On Tue, Feb 28, 2012 at 3:45 AM, Muhammad Danish Moosa <
danishmoosa at gmail.com> wrote:

> Helo Bogdan
>
> only signalling packets can be lost on opensips?
>
> But rtp streams are faster and frequent and have high impact on voice
> quality. He seems to ask packet losses on rtp packets. Even if the problem
> is identified what are the clues to solve the problem?
>
>
>
> On Tue, Feb 28, 2012 at 3:14 AM, Bogdan-Andrei Iancu <bogdan at opensips.org>wrote:
>
>> **
>> Hi Faisal,
>>
>> Let me comment a bit on the loss at software - packages can be discarded
>> at TCP/IP stack level (by kernel) if no application is reading the data
>> (or no reading as fast as the data comes).
>>
>> You can check on this (if opensips is able to process all incoming
>> traffic, without having the kernel to discard data because of full
>> buffering on sockets) via some statistics from the NET class :
>>         http://www.opensips.org/Resources/DocsCoreStats17#toc17
>>
>> An overall idea over the load in opensips (if you have idle processes or
>> not) can be monitored via the LOAD stats:
>>         http://www.opensips.org/Resources/DocsCoreStats17#toc14
>>
>> Regards,
>> Bogdan
>>
>>
>> On 02/27/2012 04:02 PM, Faisal Rehman wrote:
>>
>>     Hi Everyone,
>>
>>  I am facing huge packet loss in my server, so I am here to share with
>> you some of the output of packets losses that you can see in attached
>> image. Secondly I have few questions that I want to discuss with:
>>
>>  1. How can we reduce the packet loss to a minimum in an asterisk
>> server, I mean I just want to know more detailed info about packet loss
>> reduction.
>> 2. I am calculating packet loss following that link
>> http://www.linuxjournal.com/article/9398 where there is written that 20%
>> loss is acceptable, but if you see the attached image what will be your
>> conclusions about packet loss here?
>> 3. At last but not least I just want to know the responsibilities of the
>> software & the network, I mean how much software or network is responsible
>> for packet loss?
>> 4. What are the best possible ways to reduce the packet loss to a minimum
>> extent?
>>
>>
>> Regards,
>>
>>  Faisal Rehman
>>
>>
>> _______________________________________________
>> Users mailing listUsers at lists.opensips.orghttp://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>
>>
>>
>> --
>> Bogdan-Andrei Iancu
>> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>
>>
>
>
> --
> Muhammad Danish Moosa
>
> " The core of mans' spirit comes from new experiences. "___ Christopher
> McCandless
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20120228/f04bbf23/attachment.htm>