[Asterisk-biz] Large Asterisk Setup (~500 Concurrent Calls+Scalability)

David Mandelstam dm at sangoma.com
Thu Apr 21 11:14:57 MST 2005


Hi Bill,

Of course no one is. But there is utterly no problem running multiple quad
port boards on a PCI bus. The standard PCI has a throughput of
132Mbytes/sec, and each quad board has a total load of 2.1Mbytes/sec max
with full E1. So you can throw quite a lot of boards into a PC before you
start getting close to PCI limits. We have operational customers using 4
quads per machine, and I have no reason to suppose that is the maximum.

Regards,

David Mandelstam
Sangoma Technologies Corporation
email:     dm at sangoma.com
web:       www.sangoma.com
Tel:       905-474-1990 x 106
           800-388-2475 x 106
FAX:       905-474-9223

 

> From: asterisk-biz-bounces at lists.digium.com 
> [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of 
> William Boehlke
> Sent: Thursday, April 21, 2005 1:21 PM
> To: 'Commercial and Business-Oriented Asterisk Discussion'
> Subject: RE: [Asterisk-biz] Large Asterisk Setup (~500 
> Concurrent Calls+Scalability)
> 
> 
> Who is building motherboards with a dedicated bus for each PCI slot?
>  
> 
> -----Original Message-----
> From: asterisk-biz-bounces at lists.digium.com
> [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Brian West
> Sent: Wednesday, April 20, 2005 3:37 PM
> To: Commercial and Business-Oriented Asterisk Discussion
> Subject: Re: [Asterisk-biz] Large Asterisk Setup (~500 
> Concurrent Calls
> +Scalability)
> 
> 
> On Apr 20, 2005, at 4:20 PM, Matt Roth wrote:
> 
> > Allow me to clarify that statement.  The traffic on the PCI 
> bus to the 
> > CPU is the bottleneck.  We have sent emails to Digium regarding 
> > multiple quad-span cards in a single PC-class machine and they 
> > recommended against it for this reason.
> >
> 
> Not if you get a good board with a dedicated bus per PCI slot.
> 
> /b
> 
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