How many CPS per core and total of concurrent calls ?

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How many CPS per core and total of concurrent calls ?

Postby gequiros » Tue Feb 13, 2018 5:28 pm

Hello guys...

How many calls per second i may be able to handle per core ?

When i run:
asterisk -rx "core show channels"

78 active channels
35 active calls
15089 calls processed

My current Server has:
16 x Intel(R) Xeon(R) CPU L5520 @ 2.27GHz / Each Core


but the load remains around 0,15 ---> 0,25

memory, i have seen is pretty much near to nothing, hard drive speed does not really affect that much (cause is not heavy voice recording)

I just want to have an idea of how many calls can i place per second and how many calls can i do concurrently... so i can have a better idea on how many servers i do need to buy !!!
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Re: How many CPS per core and total of concurrent calls ?

Postby mflorell » Tue Feb 13, 2018 6:42 pm

The most important question is how many calls per second can your carrier handle.

As for VICIdial, it's not a fixed metric. It depends on the hardware of course, but also on the codec used, the answer percentage, the average length of calls, the number of concurrent channels, etc...
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Re: How many CPS per core and total of concurrent calls ?

Postby gequiros » Wed Feb 14, 2018 4:01 pm

Well, i am a "CARRIER", by all the carriers i got, combined, i can easily handle over 400 CPS

we are doing ACD = 15 to 20
Codec = G711

But i want to have a "metric" on how many Servers or how can i handle the most CPS and the more channels / people talking, so i can estimate how many servers i should buy

Any idea or suggestion on which CPU and how many cores and how many CPS and how many concurrent they can handle...

That would be greatly appreciated
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Re: How many CPS per core and total of concurrent calls ?

Postby gequiros » Fri Feb 16, 2018 6:58 pm

Right now i got:
Intel(R) Xeon(R) CPU L5520 @ 2.27GHz / 16 Cores


Would i get better CPS / Channels if i use a dual core, or single core is just fine ? the more cores the better ? how many CPS can i get with 16 cores and that kind of CPU ?

Thanks so much !!!

Thanks !!!
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Re: How many CPS per core and total of concurrent calls ?

Postby mflorell » Fri Feb 16, 2018 10:24 pm

Asterisk does not scale very well on a single machine, no matter the number of CPU cores on it. You would get much more capacity having 4 separate quad-core servers compared to a single 16-core server.
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Re: How many CPS per core and total of concurrent calls ?

Postby gequiros » Sat Feb 17, 2018 1:08 pm

Thanks so much !!!
Vicibox / ISO

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