VoIP Mailing List Archives

[carles at pina.cat]

Hello,

I wonder how Asterisk scales when we increment the Core's or CPU's of
one computer.

I see that Asterisk is only one process (I guess that it uses threads).
But because Asterisk is only one process, this process is always
executed in the same CPU. So we can have a 8 Cores server, with one Core
running Asterisk, another Core running operating system stuff/other
small daemons and 6 idle cores.

Is this correct? Why not?

If this is correct, increasing CPU number of Asterisk server box would
not increase the performance.

I don't see any other process that could use other Cores (like
transcoding processes, executing dialplan, etc.)

Thank you for your information,

--
Carles Pina i Estany GPG id: 0x8CBDAE64
http://pinux.info Manresa - Barcelona

[burke at tailorhosting...]

[carles at pina.cat]

Hello,

On Jan/23/2008, Ryan Burke wrote:

[stephen.l.davies at gm...]

[abalashov at evaristes...]

On Wed, 23 Jan 2008, Stephen Davies wrote:

[mbrancaleoni at espia.it]

Hi,

On Wed, 2008-01-23 at 16:03 -0500, Alex Balashov wrote:

[dcole at hcit.com.au]

Sorry to be a little OT.. But may I ask what some more of the specs are for that machine? Just trying to get an idea of what different hardware can achieve.

Thanks,
Daniel



________________________________
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Stephen Davies
Sent: Thursday, 24 January 2008 7:57 AM
To: burke at tailorhosting.com; Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Asterisk scalability


I'm sure that an Asterisk developer can chime in and give several examples
of how Asterisk uses its threads to increase scalability. That said, there
will be a point where the number of core/CPU's won't be the bottleneck so
adding more won't help anything.


Asterisk is highly multi-threaded and definitely takes advantage of multiple cores.

There are a few places where concurrency could be further improved, but its really quite good in 1.4. (IAX in 1.4 does handle traffic using a thread pool so will take advantage of multiple cores).

By the way, I have a client with a four-core Xeon box doing SIP to IAX conversion - that box can handle 1000 concurrent calls.

Steve

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[pdhales at optusnet.co...]

There was a cool paper written a a few months ago where they tested some
older dell servers - full details of specs and tests were available.

PaulH

On Thu, 2008-01-24 at 08:54 +1100, Daniel Cole wrote:

[stotaro at totarotechn...]

Link?

Thanks,
Steve Totaro

On Jan 23, 2008 6:08 PM, Paul Hales <pdhales at optusnet.com.au> wrote:

[pdhales at optusnet.co...]

http://www.transnexus.com/White%
20Papers/asterisk_V1-4-11_performance.htm

It was the bottom news item on voip-info.org - I was worried I would
have to really search for it!

later,

PaulH
On Wed, 2008-01-23 at 18:30 -0500, Steve Totaro wrote:

[asteriskal at gmail.com]

Thank you Paul!
Its impressive!
On Jan 23, 2008 4:55 PM, Paul Hales <pdhales at optusnet.com.au> wrote:

[carles at pina.cat]

Hello,

On Jan/24/2008, Paul Hales wrote:

[ariel.monaco at credat...]

Does anyone remember this site? http://www.astertest.com/

Regards,
Ariel

On Wed, 2008-01-23 at 18:30 -0500, Steve Totaro wrote: