[Serusers] Scalability Question

[Andrei Pelinescu-Onciul]

On Dec 10, 2003 at 06:56, Darren Sessions <dsessions at ionosphere.net> wrote:
> Here is a little more insight into what I envision to be the core network.
> Hopefully this will help in the scalability question I'm desperate to get a
> better understanding of.
> 
> I'm just not sure if I've under-engineered this, or over-engineered it - and
> what I can get rid of to save money or what more I need to spend.


I don't know about sems, but ser, if tuned for performance can do
4500-4800 cps on a dual athlon mp 2000+. On your configuration (dual
Xeon 3Ghz 1Mb cache) it should do much better (but I think it is very
improbable to have 10000 calls in a second from 100000 users, at least
 not sustained more then a few seconds). You might consider adding more
 memory (4Gb so you can use 3-3.5Gb for ser). This only if you want to
 be prepared for the worse (DOS attacks that try to initiate as many
 calls possible to non-responding destination, creating a lot of
 transaction that will be deleted only after the final response timer
 hits (default 120s); ser uses about 5k/transaction ).


Andrei

> 
> Thanks again for all the help!
> 
>  - Darren
> 
> 
> 
> ---
> 
> 
> Architecture = Intel i386
> 
> Bandwidth = DS3 to OC12
> 
> Population Size = Initially, a 100k user base at 10-1 ratio (10,000
> simultaneous calls) and a 100-1 ratio for voicemail (1,000 simultaneous
> calls). 
> 
> Scenario Implemented:
> 
> 2x centralized database servers (For SER/SEMS) Running Redhat Advanced
> Server 2.1 - Quad 2.5Ghz 1MB Cache Xeon CPUs - 8GB Ram - 60GB Raid Storage
> on host - Multi-Threaded MySQL - Multiple Gigabit Network Interfaces
> 
> 2x centralized storage servers (For VM, Web Content, etc) Running Redhat
> Advanced Server 2.1 - 2GB Ram - 140GB Storage on Host - 2.04TB Raid Storage
> - Multiple Gigabit Network Interfaces
> 
> 4x SER servers Running RedHat AS 2.1 or RedHat 9 - Dual 3Ghz Xeon CPUs per
> server - 2GB RAM - NFS to Storage Server via Deticated Gigabit Network -
> Seperate Network card for Internet Connectivity - 18GB Raid Storage on Host
> 
> 4x SEMS servers Running RedHat AS 2.1 or RedHat 9 - Dual 3Ghz Xeon CPUs per
> server - 2GB RAM - NFS to Storage Server via Deticated Gigabit Network -
> Seperate Network card for Internet Connectivity - 18GB Raid Storage on Host
> 
> 6x WEB Servers
> 3x DNS Servers
> 
> 
> 
> 
> -----Original Message-----
> From: Jan Janak
> To: Darren Sessions
> Cc: serusers at lists.iptel.org
> Sent: 12/10/2003 5:55 AM
> Subject: Re: [Serusers] Scalability Question
> 
> No, it depends on many factors like, architecture used, bandwitdth,
> population size, scenario implemented and so on.
> 
>   Jan.
> 
> On 09-12 12:35, Darren Sessions wrote:
> > Is there a scalability guide anywhere I can use in helping me decide
> how
> > much hardware to buy for SER + SER/SEMS application?
> > 
> > Thanks,
> > 
> >  - Darren
> > 
> > _______________________________________________
> > Serusers mailing list
> > serusers at lists.iptel.org
> > http://lists.iptel.org/mailman/listinfo/serusers
> 
> _______________________________________________
> Serusers mailing list
> serusers at lists.iptel.org
> http://lists.iptel.org/mailman/listinfo/serusers