[CentOS] Desperately need help with multi-core NIC performance

Pete Kay petedao at gmail.com
Wed Feb 24 23:08:43 UTC 2010


Hi

So is that the limit?  I have heard people being able to run like 10K
call channels before max out CPU cap.

Is this only possible if multiple nics are being used?

Please help.

pete

On Wed, Feb 24, 2010 at 2:53 PM, John R Pierce <pierce at hogranch.com> wrote:
> Bobby wrote:
>> On Wednesday 24 February 2010 14:55:22 John R Pierce wrote:
>>
>>> Pete Kay wrote:
>>>
>>>> What happens is that at around 2K channels running g711 ( 64k) codec,
>>>> all eth0 is used up and no more traffic can go through.
>>>>
>>> 2000 * 64kbit/sec is 128Mbit/sec, not counting any additional protocol
>>>
>>
>> Actually if you are running g.711 over VoIP, the overhead brings it up to
>> something like 87Kbps per direction.
>>
>
> k, that puts it up around 175Mbit/sec.   (and thats just one way...if
> these are full duplex conversations, then there's that amount of data
> being recieved AND transmitted from each end.    now we're up to
> 700Mbit/sec if we're looking at transmit and recieve in and out...
>
>
>
>
>
>
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