asterisk users - Jan 2006 - Processor Update?

I've been Googling around for some time now (a few hours on dial-up).  I
find all kinds of questions similar to mine, but either there is no answer or
the answer has nothing to do with the question.  Hopefully this post isn't
another one of those.

Does Asterisk favor FPU performance or clock speed?  (Meaning AMD or Intel)

I see Asterisk can be compiled for x64 systems.  Does it run any better\worse on
x64 versus i386?

Dual-core CPU performance isn't as good as dual CPU's, but is more often
than not a better deal as it's close, but a lot cheaper.  Dual-core vs. Dual
CPU performance depends on the application.  How does Asterisk respond?

Looking to build out a system capable of 100 concurrent calls (IP pass-through,
so in effect 200).  Looking at the dimensioning, I can get some ideas, but few
of them state the call quality.  I'm hoping to be able to use a single CPU
that is dual core as the price to go to a dual CPU that is single core puts me
at least 60% to a redundant server.

More information about the setup
------------------------------------------------------
No cards of any kind (Tyan board with integrated video, NIC, SATA nothing more
needed)
some IAX2 trunks (ztdummy)
mainly SIP clients, but an increasing number of IAX2
mainly ulaw\alaw, if not solely (the transcoding chews CPU cycles needlessly)


----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

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Mike Hammett wrote:
> I've been Googling around for some time now (a few hours on dial-up).  
> I find all kinds of questions similar to mine, but either there is no 
> answer or the answer has nothing to do with the question.  Hopefully 
> this post isn't another one of those.
>  
> Does Asterisk favor FPU performance or clock speed?  (Meaning AMD or 
> Intel)
In this instance I think you're asking the wrong question.  Asterisk 
will scale better on a processor that handles branching better, so the 
AMDs with the shorter pipelines will help here a lot.
> I see Asterisk can be compiled for x64 systems.  Does it run any 
> better\worse on x64 versus i386?
I have heard good reports from x64 systems.  Especially the AMD variety 
that isn't drain bamaged.
> Dual-core CPU performance isn't as good as dual CPU's, but is more 
> often than not a better deal as it's close, but a lot cheaper.  
> Dual-core vs. Dual CPU performance depends on the application.  How 
> does Asterisk respond?
>  
> Looking to build out a system capable of 100 concurrent calls (IP 
> pass-through, so in effect 200).  Looking at the dimensioning, I can 
> get some ideas, but few of them state the call quality.  I'm hoping to 
> be able to use a single CPU that is dual core as the price to go to a 
> dual CPU that is single core puts me at least 60% to a redundant server.
Asuming no AGI, a single p4 will handle 200 calls.
>  More information about the setup
> ------------------------------------------------------
> No cards of any kind (Tyan board with integrated video, NIC, SATA 
> nothing more needed)
> some IAX2 trunks (ztdummy)
> mainly SIP clients, but an increasing number of IAX2
> mainly ulaw\alaw, if not solely (the transcoding chews CPU cycles 
> needlessly)