[Opensim-dev] New Opensim features and minimum hosting hardware requirements

[Dr Scofield]

Melanie wrote:
> Scripting runs in a thread with a BelowNormal priority setting, so 
> it only takes up what capacity is left after the sim has run it's 
> cycles. Therefore, increased load only means that script performance 
> worsens.
> 
> Limiting script or even scripting may be an option for some grids, 
> but not for those that strive to be like SL, as in SL, practically 
> every item is heavily scripted and regions sport up to 9000 scripts 
> in certain cases.
> 
> However, 45000 prims is not reachable with the current server. It 
> may be possible to achieve more than 15000, but i do find that 
> things are somewhat suboptimal when approaching 12000 prims. So, I 
> believe many of these operators will see themselves go back to a 
> 15000 or even lower prim limit.
> 
> Melanie
> 
> 
> Dahlia Trimble wrote:
>> While reading through the messages I receive about new Mantis entries
>> related to scripting and attachments, it occurred to me that the processing
>> needs for a region should go up as these new features are implemented. I've
>> noticed several of the sites out there offering regions on their grids have
>> fairly startup and monthly fees, which I assume may be partially based on
>> the cost of running a simulator with 0.5.8 Opensim code. Some cost
>> assumtions that may not support this could be:
>>
>> * How many scripts are continuously running in a region
>>
>> * How many scripts an avatar is allowed to have in attachments and how often
>> they do expensive operations such as channel 0 listens, sensor scans, and
>> high frequency high load timer events such as those found in many animation
>> overriders
>>
>> * How many prims are in a region and how complex they are. It seems many
>> grid operators are offering 45,000 prim limits but my testing indicates that
>> may be an impossible number, especially when full meshing is used to support
>> physics.

hmm...FRI folks have run it successfully it seems with close to 40k prims.

	cheers,
	dirk

>>
>> There are probably other factors that escape me now, but these are the ones
>> which I currently find salient.
>>
>> While I've enjoyed being able to host several OSGrid regions on minimal
>> hardware up until now, I may have to ration what new features are available
>> in my regions or consider upgrading to more capable hardware. I have the
>> feeling others will also, and I suspect that the prices some of the grid
>> operators are offering will need to rise unless they can successfully ration
>> features as well.
>>
>> Comments? Suggestions?
>>
>>
>>
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>>
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-- 
dr dirk husemann ---- virtual worlds research ---- ibm zurich research lab
SL: dr scofield ---- drscofield at xyzzyxyzzy.net ---- http://xyzzyxyzzy.net/
RL: hud at zurich.ibm.com - +41 44 724 8573 - http://www.zurich.ibm.com/~hud/