[Opensim-users] Information on the number of sensors that an opensim region can support

[Dr Ramesh Ramloll]

Thanks Dahlia, you provided us with a good tip here ... "Keep in mind that
specifying a scan with a key or using llGetObjectDetails with a known key
is likely far more efficient than doing arbitrary scans."
Thank YOU
Ramesh

On Thu, Oct 16, 2014 at 3:46 PM, Dahlia Trimble <dahliatrimble at gmail.com>
wrote:

> Sensors are fairly expensive and inefficient as unless you specify a scan
> with a given key, they must do a linear search of all of the specified
> entity types in the scene (region). In other words, if you ask for avatars
> in an area, it must test all avatars in the region, or if you ask for
> objects it must test all of the objects. These searches also require
> exclusive access to the region entities, so only one can happen at a time
> and anything else that needs access must wait (physics, avatar movement,
> etc.). Therefore adding many sensors doing frequent scans will eventually
> degrade sim performance and could have a cascading effect. I'm not aware of
> any numeric limit; it would depend on how many objects and avatars are in
> the region and how powerful the machine is the sim is running on and how
> busy it is doing other things. I'd think testing this would be difficult as
> you may run into a situation where it appears to work fine when you are
> building/testing but then performs poorly or even fails when there are many
> avatars in the region. Lacking any known limit but with these concepts in
> mind, I guess you'll just have to try adding as many as you need and see
> when something breaks. Keep in mind that specifying a scan with a key or
> using llGetObjectDetails with a known key is likely far more efficient than
> doing arbitrary scans.
>
> Unfortunately OpenSimulator currently lacks any means of doing efficient
> spatial queries. This is something I've brought up in development meetings
> a few times but the idea has never really caught on.
>
> Good luck with your project :)
>
> On Thu, Oct 16, 2014 at 11:21 AM, Dr Ramesh Ramloll <r.ramloll at gmail.com>
> wrote:
>
>> Hello there,
>> Is there some information about any limit on the number of sensors that
>> an opensim region can support by default?
>> We are planning to use many sensors at one time, some even attached to
>> vehicles and projectiles, are there anything we should be especially
>> careful about regarding their use in this manner?
>> Thanks
>> Ramesh
>> --
>> 'Consider how the lilies grow. They do not labor or spin.'
>> *Rameshsharma Ramloll* PhD, CEO CTO DeepSemaphore LLC, Affiliate *Research
>> Associate Professor*, Idaho State University, Pocatello, ID 83209 Tel:
>> 208-240-0040
>> LinkedIn <http://www.linkedin.com/in/rameshramloll>, DeepSemaphore LLC
>> <http://www.deepsemaphore.com>, RezMela <http://www.rezmela.com>, Google+
>> profile <https://plus.google.com/103652369558830540272/about>
>>
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>
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-- 
'Consider how the lilies grow. They do not labor or spin.'
*Rameshsharma Ramloll* PhD, CEO CTO DeepSemaphore LLC, Affiliate *Research
Associate Professor*, Idaho State University, Pocatello, ID 83209 Tel:
208-240-0040
LinkedIn <http://www.linkedin.com/in/rameshramloll>, DeepSemaphore LLC
<http://www.deepsemaphore.com>, RezMela <http://www.rezmela.com>, Google+
profile <https://plus.google.com/103652369558830540272/about>
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