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post from dev-mailing list: badumnasim

Ralf Haifisch

Thanks Adam and Gustovo for first infos.

I moved this from dev to users to collect the audience for testing, see

This post should not address security issues - maby open another thread.  I
would suggest to wait until we have some more results and maybe spoken to
the badumna people.   :-)

the link is 

.Net 3.5 SP1 is needed.

since it is a client load balancer - it use a proxy.

All scenarios of proxyserver only make sense if several people are accessing
the same target (think of suid , isa or any web proxy you maybe have @work).

If we want to test drive it, we should do a test scenario with some people.

Preparing the server holding opensim with network statistics , e.g. nagios.

Have a region where no one else is around - but enough content.

Run 1, native

Run 2, with badumnasim

Clear cache of all before each run.

Looks interesting to me - so I would like to run a test at the next weekend
if I get some people. (I will prepapre a server)

If you are interested, download and install badumnasim and better email me
directly since I am on business travel next days.   Ralf (at)


Date: Sat, 4 Apr 2009 06:14:24 -0400
From: "Frisby, Adam" <[hidden email]>
Subject: Re: [Opensim-dev] BadumnaSim
To: "[hidden email]" <[hidden email]>
        <[hidden email]>
Content-Type: text/plain; charset="us-ascii"

I'd say you probably need a better sample size. 36/37 packets isn't
conclusive. Try 2000+.


From: [hidden email]
[mailto:[hidden email]] On Behalf Of Gustavo Alberto
Navarro Bilbao
Sent: Saturday, 4 April 2009 2:51 AM
To: [hidden email]
Subject: Re: [Opensim-dev] BadumnaSim

 Perhaps a union with the Grider ?. I tested Badumna in our server with
PingTester and really noticed the improvement

withot Badumna

Sent:       36
Received:   36
Lost:       0
Loss Rate:  0.00 %
Min Time:   62 ms
Max Time:   375 ms
Avg Time:   113 ms
Avg TTL:    117

With Badumna

Sent:       37
Received:   37
Lost:       0
Loss Rate:  0.00 %
Min Time:   59 ms
Max Time:   298 ms
Avg Time:   96 ms
Avg TTL:    117

2009/4/4 Frisby, Adam <[hidden email]<mailto:[hidden email]>>

I'd just like to do a quick 'look at this' on the forge - the guys who
designed it asked me about how to promote the idea to OS users, and I
suggested the forge. They have put the code up in the SVN here, so go take a

Basically it's a client-centric P2P load balancer.

Packets which are destined to multiple users get sent via a proxying P2P
layer which then gets each client to replicate it to its peers, rather than
relying on the central sim to do so. Their initial results look promising
(about a 50% boost in capacity). Obviously there are some security concerns
too, but I think it's a nifty thing worth taking a look at.


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