[asterisk-users] 400 calls at g711 how much cpu power

[Jeff LaCoursiere]

On Wed, 3 Jun 2009, Tzafrir Cohen wrote:

> On Tue, Jun 02, 2009 at 04:40:53PM -0500, Erick Perez wrote:
>> I totally agree with you Jeff, however some of us do not actually sell
>> viagra over the phone.
>> This is a campaign to spread a message to the population about the health
>> prevention steps that should be taken in order to prevent diseases that are
>> affecting our population.
>> 
>> I do understand all of you to be reluctant to help with this post. However
>> "judging before listening" has been the most devastating problem humans
>> have. We simply do not trust each other.
>> 
>> However, just for the sake of posterity:
>> 
>> Hardware/Software
>> just one server Dell 2950 / 4GB RAM / four 72Gb ultra320 SCSI hard disks
>> built as RAID-0
>
> Does the disk actually need to work hard? Why?
>
> For Asterisk?
>
> If you look at syslog.conf(5) you'll see:
>
>       You may prefix each entry with the minus ??-?? sign to omit syncing the
>       file  after every logging.  Note that you might lose information if the
>       system crashes right behind a write attempt.
>       Nevertheless  this  might give you back some performance, especially
>       if you run programs that use logging in a very verbose manner.
>
> On ext3 syncing the file can have practically the same impact as syncing
> the filesystem.
>
>
>> Debian as the OS (in 32 bit mode)
>> Asterisk 32 bit 1.4 compiled manually (codecs removed, modules removed,etc,
>> a ton of pure CRAP out!)
>
> Sanity check: what does it give you over simply unloading all the CRAP
> modules?
>
> Or not lopading everything by default and explicitly loading what you
> need?
>
>> Only g711/SIP was used
>> 20 second clip was served from ramdisk
>> Dialer: SmoothTorque (those guys simply ROCK!)( setup outbound mode ONLY!)
>> 
>> Network:
>> 50 Mbit fiber link to telco provider. Pure IP, no QoS.
>> 
>> We were pumping 3k calls-setup/second to the session controller at telco's
>> side. Until we reached controller's max of 10k calls.
>> Server load was NEVER above 3.2
>
> For stress-testing, use several strong Asterisk "clients" and have the
> server "bombard" them.
> your Asterisk server. I think it should be simple enough to write a
> dislplan that will emulate a random callee.
>

I am fairly certain he was simply reporting the results (for posterity) of 
the event having already happened.  Good to know (I guess?) that such 
small hardware can acheive the performance that was squeezed out of it. 
Impressive.

All THAT said, I am unconvinced that there was no sales effort involved in 
sending out millions of unsolicited calls.  Claim if you like that this 
was some public information event (which you fail to expand much upon) and 
convict me of mistrust, but who would have paid for such a thing.  TV ads, 
radio spots, billboards, etc., are much more effective for public 
information.  Unsolicited calls on that order mean only one thing to me - 
SPAM.  So what wonderful product were you "informing" the public about 
with regard to the looming threat of illness?

j