On Mon, 2 Mar 2015, Mordechay Kaganer wrote:
When a particular server gets about 500 concurrent calls, the sound
quality begins to degrade, the sound plays slowly and with clicks. As
far as i understand, it's because asterisk is unable to send the voice
stream in time i.e. the server is overloaded.
What i don't understand is, at the time that the server appears to be
overloaded and the audio quality is bad, actual server's load is no more
than 30-40% (60-70% idle CPU on average). IMHO, this indicates that for
some reason the server is unable to use it's CPU capacity efficiently.
May be because of some kind of thread contention inside asterisk?
You may be using a feature (i.e., meetme) that is single threaded. If you
view the system using 'htop' instead of 'top' (or, press '1' while running
top) you may see that a single CPU is maxed out while the others are
relatively idle.
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Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards sedwa...@sedwards.com Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000
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