ATOM D525 Server as Telephony Server on a Multiserver setup

[covarrubiasgg]

Hi all, i know there is a lot of posts asking about hardware support and so on, but i want to know if some of you have tried this kind of hardware as Telephony Servers.

I can get some Atom D525 (1.8 Ghz Dual-Core HT), 4 Gb RAM + radi 1 , for about the half price of a i386 Quad Core wich currently i am using. besides it needs much less power to operate.

Have anyone tried a multiserver setup with Atoms as Telephony Servers?

note that i am doing full rec, AMD, outbound calls trough 60 Dahdi channels on each server. (so 60 simultaneous calls with alaw codec max)

Database, Archive and Web Server are on separete Hardware each.

[boybawang]

in my experience an atom is stable for 10 - 15 simultaneus calls with 2 GB of RAM and a regular SATA Hard drive

[boybawang]

Operating System: Ubuntu Server 8.0.4 32 bit with a very light kernel
G729: No
Call Recording: On Demand

I also tried using debian etch net install with a customized kernel the results are just still stable at 10 to 15 simultaneous calls

[williamconley]

maybe you should try gentoo. much easier to modify the kernel (bare bones it ).

[covarrubiasgg]

maybe you should try gentoo. much easier to modify the kernel (bare bones it ).

I Agree Gentoo rockz , but i dont feel experienced enough with vicidial to do a Scratch Install for the telephony server and add it to the cluster, i can work fine with Gentoo, it was my main OS for 2 years .

Based on boybawang experience, 15 simultaneous calls are not quite enough . Thank you so much for share you results .

I am not giving up on this i will order 1 server to do some testing, maybe next week i will have it here, if it works i can save a lot on my servers budget, if not, well jaja i got a mini server for testing other sttuf .

I will be glad to share results....

[williamconley]

i have some old gentoo instructions for vicidial installation. strangely enough, they still work. i'm sure there'd be a few driver changes for that particular hardware, but you may be surprised about your ability to do it. and it is the best way i ever found to "eek out" the most from a CPU by paring down the non-essentials. especially if you don't need the mysql/apache portions (dialer only).

[covarrubiasgg]

i have some old gentoo instructions for vicidial installation. strangely enough, they still work. i'm sure there'd be a few driver changes for that particular hardware, but you may be surprised about your ability to do it. and it is the best way i ever found to "eek out" the most from a CPU by paring down the non-essentials. especially if you don't need the mysql/apache portions (dialer only).

I will really appreciate if you can share it i am going to have the server here, so i cant lose anything but time testing diferent setups on it...

[williamconley]

it's on my sourceforge project, published it a couple years ago ... and nobody cared so i haven't kept it up. LOL

http://sourceforge.net/projects/poundteampbx/

But i have it on good authority that a gentoo person can actually still decode and install (although it was a couple months ago that the last person made that comment).

[covarrubiasgg]

tnx i wiill let you know the results i hope to have it working next week.

[gardo]

We've used some Atom based servers with almost the same specs as yours. It was able to do the following while maintaining good call quality:

1. 10 seats outbound
2. Up to 1:2 dial level ratio
3. All calls recorded
4. G729 codec

If you'd be taking out call recordings and the g729 codec, I'm pretty sure you could squeeze more calls on it.

[williamconley]

1:2? or 2:1? (1:2 would be .5 ratio, 2:1 would be 2.0 dial ratio ... )

[covarrubiasgg]

We've used some Atom based servers with almost the same specs as yours. It was able to do the following while maintaining good call quality:

1. 10 seats outbound
2. Up to 1:2 dial level ratio
3. All calls recorded
4. G729 codec

If you'd be taking out call recordings and the g729 codec, I'm pretty sure you could squeeze more calls on it.

Thanks Gardo , i am not using g729 that can help me a little but i am doing full rec and thats a big down side, in other servers i have (all in one setups) the recording process is the more CPU intensive, note i am just recording i am not even converting the files to MP3.

I hope to have the Atom server this afternoon or tomorrow morning to begin the testing n_n.

[boybawang]

you would also want to install a fast sata hdd with 10,000 rpm to have better results

[gardo]

It's dial level 2 or 1:2 ratio (1 agent to 2 lines).

You can activate RAMdrive or tmpfs for your recordings. This will greatly decrease the bottleneck on the harddrive when recording all calls. Then you can schedule the transcoding or mixing during off hours.

Best harddrives to maximize your Atom server are SSDs (solid state drives).