[Asterisk-Users] Asterisk resource consumption..

[WipeOut]

Robert Lawrence wrote:

> Unfortunately, it is not as simple as just counting channel types.  
> You need to factor in which compression codecs are used, as each will 
> have a different impact on the system.  Are multiple codecs used 
> requiring transcoding, or just one?  And what is Asterisk being used 
> for?   Is Asterisk monitoring the channels or is native bridging 
> permitted?  Is muisc on hold used, and if so, how many different music 
> on hold contexts?  Is Asterisk recording the channels?  What about 
> meetme conferences?
>
> Regards.
>
>

All valid points..

I realise that it would not be a perfect calculation but if it was 
possible to say that in an average you need X MB for running Asterisk 
and then Y MB per active channel it would at least give people some 
method to calculate the memory requirements, this is similar to most 
software where they will say you need a certain amout of memory to run 
the app and then in server systems they tell you to add an amount per user..

For example, my system uses 83 MB of RAM (excluding buffers and cache) 
when idle and when I make a call to the echo test it uses about 20k.. 
This means that by these numbers a standard system for 100 concurrent 
users would need no more than  128MB of RAM minimum and 256MB would be 
plenty.. Obviously this is very simplistic and only based on a echo test 
but it does mean that the people who are throwing 2GB of memory at their 
asterisk servers are wasting a lot of money that could have been put 
into faster processors to handle more calls and services..

Thats really all I was talking about so that it helps people size their 
systems and would probably mean fewer "What system do I need?" questions..

Later..


>
> WipeOut wrote:
>
>> No this is not another of the "What hardware do I need?" posts.. :)
>>
>> Just wondering if anyone has calculated the memory consumprion for 
>> running asterisk..
>>
>> For example, when its idle it uses U MB or RAM,  uses V MB for each 
>> active Zap channel, W MB for each active SIP channel, X MB for each 
>> active IAX Channel and Y MB for each VM channel..
>>
>> I often read posts where guys are throwing 1-2GB or RAM at a server 
>> and this seems extreme to me but there don't seem to be any numbers 
>> for people to use as a guide (could be placed on voip-info.org)..
>>
>> Unfortunately my system is to small to do any real testing of this 
>> kind but I would be happy to help somone who has a bigger more active 
>> system to get the numbers..
>>
>> Later..
>> _______________________________________________
>> Asterisk-Users mailing list
>> Asterisk-Users at lists.digium.com
>> http://lists.digium.com/mailman/listinfo/asterisk-users
>> To UNSUBSCRIBE or update options visit:
>>   http://lists.digium.com/mailman/listinfo/asterisk-users
>>
>
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
>