[Asterisk-Users] dimensioning: Where is the CPU vs Asterisk load table

[Erick Perez]

Hi, is there any good calculator/table/reference about proper dimensioning?
I read the wiki and they basically say "xx users run fine in yy hardware"
http://www.voip-info.org/tiki-index.php?page=Asterisk+dimensioning.

SO far I read that:
-Run up to 4 E1s per CPU (which one? an i386 or a dual core?
 -it is very CPU intensive to do transcoding. Try to minimize it.
 -you can help the CPU by using DSP-based boards or optimized boards.
 -Lots of RAM is good too. (like 512MB or 8 GB?).
 -A Front Side Bus of 800mhz is also good.
 -disable HT on Intel CPUs.
-Use Ram disk to avoid some I/O bottlenecks specially on voicemail
(hence, deploy more RAM).
-two single core CPUs better than one dual core CPUs??.
-And the most important I read was: Keep load under 5 in single CPUs
and 10 in dual CPUs (didn't mention dual cores in the article).

Im not sure If Im asking properly, basically in this
asterisk-heavy-load-learning stage, I want to know how to calculate
computer needs based on customer needs.
(i've only done 5 to 50 extens, and up to 2 E1)

And yes, the need comes from a potential customer that is a Hotel with
450 extensions (rooms) and 125 more ext. (employees) making calls
internally, outbound, inboud, voicemail,fax,cell phones, etc.

So far, shame on me, I have no idea where to start in terms of equipment.

Or I can go out there and buy a 20k machine(s) to run 4or5 E1s....It
will run, but I will never learn why.

thanks,



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Erick Perez
Linux User 376588
http://counter.li.org/  (Get counted!!!)
Panama, Republic of Panama