Hi,
o Steven C. Blair [02/18/09 13:50]:
Hi Stefan,
I posted this to the list before and did not receive any responses. I’m
did you not receive my respone?
------------
from the README:
SEMS shows very good performance on current standard
PC architecture based server systems. It has sucessfully
been run with 1200 G.711 conference channels on a quad-core
Intel(R) Xeon at 2GHz (700 GSM, 280 iLBC channels). On the
other hand it also runs on very small devices - for example
small embedded systems like routers running OpenWRT, for which
of course the achievable channel count is not that high.
But with better NIC you can for sure get more out of it. I am not sure
whether on the above test it saturated the network.
For more processing intensive codecs (gsm, ilbc, speex) the CPU is the
limiting factor. Also try setting media_processor_threads on multi core
machines. Disk is not relevant; if it's not too many, announcemnent
files will quickly be cached anyway (or use cache_announce).
Stefan
--------
hoping you have some specific insight which I can use. I’m looking to
build a conference server using SEMS. It will run on RedHat ES Linux.
I’d like to be able to support 5 simultaneous conferences using
depending on the participants count (e.g. 5 each is 25 calls), this is
not much, even a single processor with e.g. 1GHz or some mini computer
will suffice.
for a g711 channel you will need about 10 MHz processing power; if it is
25 calls, a 1GHZ PC can definitely handle it.
webconference with pin collect. In addition I would like to support
click-2-dial application. This application would use conference to
receive an invite from the web page (script), dial a non-subscriber into
a conference then REFER the subscriber to that same conference. At this
why not simply call the subscriber into the conference?
point both G.711 and G.722 codecs are supported. Given this what size
so you are doing wideband? in this case you will need some more
processing power for resampling; about the double I would guess. g722
needs about the same as gsm iirc. if you are not using wideband (wb
branch), then better disable the g722 codec - it does not help much to
have it in 8khz compat mode.
processor and memory would you recommend? Can SEMS utilize a SMP system?
you can set media_processor_threads in sems.conf to use multiple threads
on SMP. all calls in one conference will be on a single thread (one
processor) though; but this should usually be no problem.
Stefan
P.S. please keep the list in CC, this might be interesting for others as
well
Thanks,Steve
Senior Network Engineer,
Information Systems and Computing
Networking and Telecommunications , Suite 221A /6228
University of Pennsylvania
Voice:215-573-8396
FAX:215-898-9348
--
Stefan Sayer
VoIP Services
[email protected]
www.iptego.com
IPTEGO GmbH
Wittenbergplatz 1
10789 Berlin
Germany
Amtsgericht Charlottenburg, HRB 101010
Geschaeftsfuehrer: Alexander Hoffmann
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