[asterisk-users] Asterisk concurrent calls count

[Matt Watson]

You can NOT use bogomips as any kind of measurement for system performance.

First of all, Bogomips is a linux-specific thing and not available on other OS that Asterisk runs on.

The second, and far more important point.  "Bogo" is taken from the word "Bogus".  Bogomips are not a measurement of system performance, it is simply a number used for calibrating parts of the kernel for your CPU.

The problem with coming up with these numbers of concurrent calls is that Asterisk is not a "complete package".  Meaning, it's the software portion only, most other systems when you get them are going to be the software & the hardware in one package, the 2 go hand in hand and are specifically designed for each other.

Asterisk does not fall into that category unless you invest in one of the many asterisk appliances out there.  Digium has no control over what hardware you are going to run Asterisk on, so they can't provide you with these numbers.

Heres a few questions at the top of my head that I think would influence the answer:

are you recording calls? are you transcoding calls?  are you using T1s or SIP/IAX trunks? Did you buy the 7.2krpm, 10krpm, or 15krpm hard-drives?  Do your harddrives have 8mb, 16mb, or 32mb cache? Did you buy the better SAS controller?  Did you buy 667mhz or 800mhz ram? Are you using EXT3, ReisferFS, XFS, JFS, ZFS, UFS?  Are you using AGIs?  Are you using MeetMEs? How many?  Whats the average length of the conferences?  Are devices using re-invites to take Asterisk out of the call loop?

The list goes on and on... and every single one of those answers is going to influence that number for "How many calls can my system handle?"

--
Matt

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of David Backeberg
Sent: Friday, May 16, 2008 9:47 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Asterisk concurrent calls count

I wonder if there's a proportion where somebody could take some
standard kernel output, say bogomips,
and guesstimate some proportionality from that. As in: bogomips says
this, expect ballpark 120 SIP over codec calls.
It certainly seems like there could be some kind of asterisk
benchmarking utility kindof like Sandra for Windows. I know there are
a gazillion variables in asterisk, and that's why asterisk is so
powerful. But some benchmarking utility would at least allow some
(even if phony baloney) relative comparisons between similar hardware.

Has anybody ever tried to roll their own VoIP or Zaptel load
simulator? How did they do it?

On Fri, May 16, 2008 at 7:59 AM, Al Baker <bwentdg at pipeline.com> wrote:
> this is one very weak area for *. There is NO ANSWER.
> Now in fairness to *, the answer DOES depend on a # of critical variables.
> How much CODEC to CODEC transcription is going on.
> How many MEET Me conferences are going on.
>
> On the other hand, DIGIUM COULD, since they have a lab take 4-5
> 'standard' workloads
> on two of the most common hardware boxes, say Dell & HP, and run x # of
> transcriptions and
> show the #'s.
> Then x # of meet-me conferences.
>
> Face it the DB Industry did this 15-2- YEARS ago with TP benckmarks
>
> Rockwell and NORTEL can tell you this for every piece of hardware they sell.
>
> It is a an area DIGIUM need to "man-up" in.
>
> Alexey Shimeshov wrote:
>> Hello, Alexander.
>>
>> AO> Hi Asterisk Users,
>>
>> AO> I'm interested in how many concurrent calls Asterisk can process without
>> AO> troubles. I mean 1 Asterisk server (software) like either proxy or media
>> AO> server (any numbers will be appropriate).
>>
>> AO> 1. Is there any limitations by the software? What is this number?
>> AO> 2. What is the maximum count of concurrent calls you've ever seen/tested?
>>
>> Look at this example
>>
>> http://www.transnexus.com/White%20Papers/asterisk_V1-4-11_performance.htm
>>
>>
>
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