o Steven C. Blair [02/05/09 15:37]:
Are there any specs available which describe how to size hardware for
a SEMS conference server? We’d like to offer webconference, echo &
announcement services. It would helpful to get some idea of how many
simultaneous conferences can exist and how many endpoints per conference
with a specific processor, number of processors, memory and disk
storage. For discussion purposes assume we are using G.711.
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
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
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VoIP Services
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