<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
Hi again,<br>
<br>
I did a try on my asterisk 11.2.1 compiled on Ubuntu 12.04 (64 bit)
with a simple Pentium 4 CPU (Intel(R) Pentium(R) D CPU 2.80GHz). I
connected 5 SIP-Users with a ConfBridge. This is my picture:<br>
<br>
<img src="cid:part1.07000500.05090102@ovm-group.com" alt=""><br>
<br>
<img src="cid:part2.04010108.00060601@ovm-group.com" alt=""><br>
<br>
Please give a a hint where I can change "you parameters" like
denoise etc. So I will try to change these settings on my box also.
I have no experience with Confbridge.<br>
<br>
-Thorsten-<br>
<br>
<div class="moz-cite-prefix">Am 08.02.2013 19:34, schrieb Hristo
Trendev:<br>
</div>
<blockquote
cite="mid:CAF5NwdMCi1hd3euNqi-phHydQAr6vQzkCAq-jtH5mBMBfdQMLw@mail.gmail.com"
type="cite">
<div dir="ltr">Hi, the quad-core server is a dedicated asterisk
server. I duplicated the tests on a virtual server (running on
another physical server) only to rule out the possibility of
hardware problem with the first sever.
<div>
<br>
</div>
<div style="">Hristo</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Fri, Feb 8, 2013 at 11:41 AM,
Thorsten Göllner <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:tg@ovm-group.com"
target="_blank">tg@ovm-group.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF"> Hi,<br>
<br>
perhaps it is a problem with your Host-Guest-Setup? Did
you try the Asterisk-Setup on a dedicated server without
virtualization?<br>
<br>
-Thorsten-<br>
<br>
<div>Am 07.02.2013 11:42, schrieb Hristo Trendev:<br>
</div>
<div>
<div class="h5">
<blockquote type="cite">
<div dir="ltr">Hi Thorsten,
<div><br>
</div>
<div>Thanks for your reply. I did check core show
translations, but the following <a
moz-do-not-send="true"
href="http://lists.digium.com/pipermail/asterisk-users/2012-November/276132.html"
target="_blank">http://lists.digium.com/pipermail/asterisk-users/2012-November/276132.html</a>
suggests that the values displayed are no longer
representing the computation cost only. However
to answer your question:</div>
<div><br>
</div>
<div>G722 to SLIN16 cost is 9000, reverse
direction is 6000</div>
<div>ALAW to SLN16 cost is 17000, reverse
direction is 14500<br>
</div>
<div><br>
</div>
<div>G722 to SLN cost is 9600, reverse direction
is 8250<br>
</div>
<div>ALAW to SLN cost is 9000, reverse direction
is 6000</div>
<div><br>
</div>
<div>With regards to the CPU usage per core -
inside the VM, where only one core is available,
the CPU was close to 100% when the problem
started to apear, on the physical server with 4
cores, the cores were evenly loaded at about
30-40%. A single call into the conference
consumed between 10-20% depending on whether I
have denoise enabled or not.</div>
<div><br>
</div>
<div>There is no dahdi board installed, I only use
the dahdi module for conference timer (note that
the problem is also present with the <span
style="font-family:arial,sans-serif;font-size:13px">timerfd
timing module).</span></div>
<div><br>
</div>
<div>BR,</div>
<div>Hristo</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Wed, Feb 6, 2013 at
1:57 PM, Thorsten Göllner <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:tg@ovm-group.com"
target="_blank">tg@ovm-group.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">Did you check<br>
asterisk -rx "core show translation recalc 10"<br>
<br>
Am 06.02.2013 13:56, schrieb Thorsten Göllner:
<div>
<div><br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex"> Sorry - I
just read you alsways checked the cpu
usage. Are all cores at 100%? Is it the
atserisk process which consumes it all?<br>
<br>
Am 06.02.2013 13:54, schrieb Thorsten
Göllner:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex"> Did you watch
the cpu usage (for example with top)?<br>
You have a board installed which does
use dahdi? Did you check the command
"dahdi_test"?<br>
Maybe a (performance) problem of the
software ec?<br>
<br>
Am 06.02.2013 11:13, schrieb Hristo
Trendev:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex"> Hi,<br>
<br>
I have been experimenting with
ConfBridge from the asterisk-11
stable SVN branch (and with 11.2.0
also) for the last 3 weeks and I see
a problem, which what I believe is
performance related. I just wanted
to ask if someone else has made any
tests and what is the maximum number
of participants that they've seen in
a conference.<br>
<br>
I was never able to get more than 8
participants (mixed G722 and G711a)
on a conference (actually that's per
server limit) with almost all
settings on default, except for
dsp_drop_silence and denoise which
are enabled.<br>
<br>
I tested on Debian squeeze, 64-bit,
quad-core Xeon server @2.4GHz and
also on another virtual server with
similar processor (just one core
available to the VM). While this is
not the latest and greatest CPU, I
would certainly expect it to handle
more than 8 calls.<br>
<br>
To be honest, I was in fact able to
get it working for up to 20
participants (most with G711), when
I switched from res_timing_timerfd
to res_timing_dahdi and turned off
denoise, but that's still not normal
I believe, especially with most
participants on mute and with
dps_drop_silence enabled and nothing
else running on the server.<br>
<br>
The problem itself is, that once I
get over the "critical" number of
participants, the voice starts to
break up and it's impossible to
understand the person who's talking.
This is certainly not bandwidth
related because all tests were made
on the LAN and besides I could see
that the CPU was sometime close to
100%.<br>
<br>
Did someone observe something
similar?<br>
<br>
BTW, once the first participant
enters the conference I start seeing
probably over 50 messages per second
saying:<br>
<br>
bridging.c:757
bridge_channel_join_multithreaded:
Going into a multithreaded waitfor
for bridge channel 0x292d708 of
bridge 0x28f3658 <br>
</blockquote>
</blockquote>
</blockquote>
<br>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
<br>
</body>
</html>