<br><div>I don't have anything related to these troubleshooting and tweaking readily available in my mind, I already wrote the pseudo routine/steps to resolve the issue.</div><div>As Sir Bogdan has stated openSIPS dont deal with RTPs so you can safely conclude right away that its not OpenSIPS causing the packet losses.</div>
<div>I will still insist on focusing/troubleshooting the 1st three layers on your network or on server.</div><div><br></div><div><br><div class="gmail_quote">On Thu, Mar 1, 2012 at 12:04 PM, Faisal Rehman <span dir="ltr"><<a href="mailto:faisal.rehman22@yahoo.com">faisal.rehman22@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-size:10pt;font-family:tahoma,new york,times,serif"><div><span>Hi Sammy,</span></div><div><span><br>
</span></div><div><span>Sure I will paste the stats here but will you please tell me some important steps to be performed on software side. Here I am talking about the OS, kernel upgrade & advanced system administration level stuff that can reduce the packet loss immediately. Through the final conclusions I have become to know that its not the OpenSIPS problem but it regards with physical, software & network upgrades. </span></div>
<div> </div><div>Regards,<br><br></div><div>Faisal Rehman<br> <div style="font-size:10pt;font-family:tahoma,'new york',times,serif"> <div style="font-size:12pt;font-family:'times new roman','new york',times,serif">
<div dir="ltr"> <font face="Arial"> <hr size="1"> <b><span style="font-weight:bold">From:</span></b> Sammy
Govind <<a href="mailto:govoiper@gmail.com" target="_blank">govoiper@gmail.com</a>><br> <b><span style="font-weight:bold">To:</span></b> OpenSIPS users mailling list <<a href="mailto:users@lists.opensips.org" target="_blank">users@lists.opensips.org</a>> <br>
<b><span style="font-weight:bold">Sent:</span></b> Tuesday, February 28, 2012 10:38 AM<br> <b><span style="font-weight:bold">Subject:</span></b> Re: [OpenSIPS-Users] Packet Loss and its Solution<br> </font> </div><div><div class="h5">
<br>
<div>Hi Faisal,<div><br><div>Can you copy/paste the stats of "ifconfig eth<i>N</i>" on which traffic is terminating. I just wanted to see the error and dropped packets on physical interface. <br>Hardware and physical connectivity plays major role in packet losses.On<b> Asterisk server</b> 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 ?</div>
<div><br></div><div>Before troubleshooting the software application I suggest start digging the networking interfaces and tweak the eth<i>N and </i>related properties of kernel to maximize the throughput.</div><div><br></div>
<div>This would be just how I'd go with this kind of problem.</div><div><br></div><div>Regards.</div><div>Sammy</div><div><br><br><div>On Tue, Feb 28, 2012 at 3:45 AM, Muhammad Danish Moosa <span dir="ltr"><<a rel="nofollow" href="mailto:danishmoosa@gmail.com" target="_blank">danishmoosa@gmail.com</a>></span> wrote:<br>
<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Helo Bogdan<br><br>only signalling packets can be lost on opensips?<br><br>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?<div>
<div><br>
<br><br><div>On Tue, Feb 28, 2012 at 3:14 AM, Bogdan-Andrei Iancu <span dir="ltr"><<a rel="nofollow" href="mailto:bogdan@opensips.org" target="_blank">bogdan@opensips.org</a>></span> wrote:<br><blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<u></u>
<div>
Hi Faisal,<br>
<br>
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).<br>
<br>
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 :<br>
<a href="http://www.opensips.org/Resources/DocsCoreStats17#toc17" target="_blank">http://www.opensips.org/Resources/DocsCoreStats17#toc17</a><br>
<br>
An overall idea over the load in opensips (if you have idle
processes or not) can be monitored via the LOAD stats:<br>
<a href="http://www.opensips.org/Resources/DocsCoreStats17#toc14" target="_blank">http://www.opensips.org/Resources/DocsCoreStats17#toc14</a><br>
<br>
Regards,<br>
Bogdan<div><div><br>
<br>
On 02/27/2012 04:02 PM, Faisal Rehman wrote:
</div></div><blockquote type="cite"><div><div>
<div style="font-size:10pt;font-family:tahoma,'new york',times,serif">
<div>
<div style="color:rgb(69,69,69);font-size:12px;font-family:Arial,Helvetica,sans-serif">
<div>
<div style="color:rgb(0,0,0);font-size:10pt;font-family:tahoma,times,serif">
<div>
<div style="font-size:10pt">
<div>Hi
Everyone,</div>
<div><br>
</div>
<div>I
am facing huge <span style="color:rgb(54,99,136);border-bottom:2px dotted rgb(54,99,136)"><span style="border-bottom:2px dotted rgb(54,99,136)">packet
loss</span></span> 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:</div>
<div><br>
</div>
<div>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.</div>
<div><span style="font-size:10pt">2. I am calculating
packet loss following that link </span><a rel="nofollow" href="http://www.linuxjournal.com/article/9398" style="color:rgb(35,71,134);outline-width:0px;font-size:10pt" target="_blank"><span>http://www.linuxjournal.com/article/9398</span></a> 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?</div>
<div>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?</div>
<div>4.
What are the best possible ways to reduce the
packet loss to a minimum extent?</div>
<div><br>
</div>
<div> </div>
<div>Regards,<br>
<br>
</div>
<div>Faisal
Rehman</div>
</div>
</div>
</div>
</div>
</div>
<br>
</div>
</div>
</div></div><pre><fieldset></fieldset>
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</pre>
</blockquote><font color="#888888">
<br>
<br>
<pre>--
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre>
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