[Opensim-dev] Auditorium for 500

Sat Dec 13 17:08:57 UTC 2008

I agree it is a lofty goal but some news I read recently about some 3D scene
trickery may help us overcome some of these limits via other methods. I
understand your concerns Neb but I think like HyperGrid and some innovations
in other areas may help us overcome the limits we have through methods as of
yet explored. We have had 10-20 avatars in sims for hours with no
instability but at other times we have had crashes.  

I would say it is 50% up until our method of isolating sims with Hyper-V.
Our last test took us from PubQuiz crashes to zero crashes at 10-20 users. 

 I am hoping we achieve 30-50 next on a single sim. I am also curious grid
wide what concurrency is? I don’t mind 20-30 sims per region if we can have
many regions this full on a single grid.  Thanks for the feedback Neb. I
need more friends to achieve 30-50 lol.

Kyle G
www.reactiongrid.com 

From: opensim-dev-bounces at lists.berlios.de
[mailto:opensim-dev-bounces at lists.berlios.de] On Behalf Of Nebadon Izumi
Sent: Saturday, December 13, 2008 12:04 PM
To: opensim-dev at lists.berlios.de
Subject: Re: [Opensim-dev] Auditorium for 500

sure the team is more than capable, but I'm not convinced .NET and Mono with
C# will ever be able to perform at a level suitable enough for this kind of
performance, Its not a matter of talent, but more a matter of limitations of
the language we are using to program the simulator, I am not claiming 100%
we wont be able to achieve it, the language is very young and there could be
enhancments to .net and mono in the future that will allow for much higher
performing apps.

Nebadon
2008/12/13 Kyle G <create at reactiongrid.com>
Even when compared to mature, production products we offer to host usually
users select OpenSim over all others.  You just have to properly set
expectations and then guide new users through the many limits. I personally
do feel OpenSim will exceed 100 avatars as the development team is amazingly
talented and dedicated. But I am only going by our almost full year of
testing and over a dozen grid owners we service.

Keep us posted Americo!
Kyle G
www.reactiongrid.com 

From: opensim-dev-bounces at lists.berlios.de
[mailto:opensim-dev-bounces at lists.berlios.de] On Behalf Of Nebadon Izumi

Sent: Saturday, December 13, 2008 11:32 AM
To: americo at dmu.com; opensim-dev at lists.berlios.de
Subject: Re: [Opensim-dev] Auditorium for 500

Americo,

No your testing is spot on, if not exceeding what we normally see OpenSim
Capable of being able to do, OpenSIM will likely never be capable of hosting
500 visitors in 1 simulator, Secondlifes Limit is somewhere around 100 and
even with 100 it runs extremly bad.  OpenSims Maximum acceptible user load
on even the most beefy hardware is somewhere between 20-30 visitors on a
good day, generally 10 visitors or even less will bring a sim crashing to
its knees within a matter of hours.  and even a Sim sitting idle generally
at this point doesnt last more than about 24 hours before becoming
completely unstable for use.  You need to remember this project is alpha
level, and very very very buggy software at this stage.  But that said, 500
avatars in one simulator is a lofty goal that probably can not be achieved
with OpenSIM, unfortunatly the programming language we have chosen to
program opensim in will probably prevent us from ever even being able to
have 100 avatars in 1 simulator, let alone 500.  Hope this helps, just be
aware that OpenSIM is just slightly more than 50% complete in its source
code.  There is still a very long road ahead before we get anywhere near the
end, or even begin beta testing with this software, IT IS NOT A PRODUCTION
ENVIRONMENT!  Good luck with your testing.

Nebadon
On Sat, Dec 13, 2008 at 5:31 AM, Americo Damasceno <adamascj at hotmail.com>
wrote:
Thanks, Kyle.

I did some tests, having a "basic" (?) PC (DELL Latitude D 600 w/Centrino 2
GHz  512 Mb), OpenSim StandAlone, 1 region, Windows and "my number" is: NO
MORE THAN 20 visitors/avatares to have a good performance.

Is it a reasonable number or am I doing something wrong?

Thanks,

Americo

http://www.dmu.com
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