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

[Mic Bowman]

Depending on your requirements... you can use llVolumeDetect() & check for
collisions. That uses the physics acceleration structures.

--mic


On Thu, Oct 16, 2014 at 12:49 PM, Dr Ramesh Ramloll <r.ramloll at gmail.com>
wrote:

> 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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