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Formula for temp-on-rez prim limits

Andrew Linden
Linden staff
Join date: 18 Nov 2002
Posts: 692
02-03-2009 08:33
There was recent confusion about the formula for calculating how many temp-on-rez prims can exist on a parcel. I looked it up and thought I would post it here for those who are curious. The original bug/discussion was here:

https://jira.secondlife.com/browse/SVC-2380

The formula is:

temp_prim_limit = (regular_prim_limit - current_regular_prims) + minimum(0.5 * regular_prim_limit + 400, 1000)

Consider a parcel with a regular prim limit of 100. The temp_prim_limit depends on how many regular prims that are already there. The two extreme cases are when the parcel is totally empty, or totally full:

Totally empty:

temp_prim_limit = 100 - 0 + minimum(100/2 + 400, 1000) = 100 + 50 + 400 = 550

Totally full:

temp_prim_limit = 100 - 100 + minimum(100/2 + 400, 1000) = 0 + 50 + 400 = 450


Now consider a parcel with a regular prim limit of 2000.

Totally empty:

temp_prim_limit = 2000 - 0 + minimum(2000/2 + 400, 1000) = 2000 + 1000 = 3000

Totally full:

temp_prim_limit = 2000 - 2000 + minimum(2000/2 + 400, 1000) = 0 + 1000 = 1000


I'm going to hunt the public wiki for legacy copies of the formula, but if anyone knows of other places where the formula is posted please update it. Thanks.
Alisha Matova
Too Old; Do Not Want!
Join date: 8 Mar 2007
Posts: 583
02-03-2009 08:48
minimum(0.5 * regular_prim_limit + 400, 1000)

Does the ",1000)" mean a maximum of 1000 temp prims on any sized parcel?
Meade Paravane
Hedgehog
Join date: 21 Nov 2006
Posts: 4,845
02-03-2009 09:00
From: Alisha Matova
minimum(0.5 * regular_prim_limit + 400, 1000)

Does the ",1000)" mean a maximum of 1000 temp prims on any sized parcel?

That's the way I read it. I think the result of Andrews math on the totally empty, 2k-prims parcel might be incorrect.

Not that I'm discouraging him from posting. TY for this info, Andrew!

edit:
From: Andrew Linden
I'm going to hunt the public wiki for legacy copies of the formula, but if anyone knows of other places where the formula is posted please update it. Thanks.

Google is SOOOO much better than mediawiki for searching. If you didn't already know this trick, you can add "site:wiki.secondlife.com" (sans quotes) at google to limit the hits to pages on the wiki..

edit2: and if you felt like it, a forums post about if megaprims can lag a sim wouldn't be unwelcome! :) That seems to be a FAQ around here.. :\
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Djamila Marikh
(shrugs)
Join date: 9 Nov 2006
Posts: 158
02-03-2009 10:35
From: Meade Paravane

TY for this info, Andrew!


/me cheers and agrees sincerely !
Sling Trebuchet
Deleted User
Join date: 20 Jan 2007
Posts: 4,548
02-03-2009 14:47
From: Andrew Linden
.......
Totally full:

temp_prim_limit = 2000 - 2000 + minimum(2000/2 + 400, 1000) = 0 + 1000 = 1000

...


Over in RA, there are a few people who believe that it is their gawd/LL-given right to use a loopped temp rezzer to get 1000 extra 'permanent' prims for that full parcel.

They hold that because the limit is there, LL intend that they can do that.


It's an interesting point of view.
Duh!
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Briana Dawson
Attach to Mouth
Join date: 23 Sep 2003
Posts: 5,855
02-03-2009 15:04
From: Sling Trebuchet
Over in RA, there are a few people who believe that it is their gawd/LL-given right to use a loopped temp rezzer to get 1000 extra 'permanent' prims for that full parcel.

They hold that because the limit is there, LL intend that they can do that.


It's an interesting point of view.
Duh!


What is not expressly forbidden is obviously o.k., don'tcha know?

Yea i hate that way of thinking.
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Jesse Barnett
500,000 scoville units
Join date: 21 May 2006
Posts: 4,160
02-03-2009 16:05
From: Sling Trebuchet
Over in RA, there are a few people who believe that it is their gawd/LL-given right to use a loopped temp rezzer to get 1000 extra 'permanent' prims for that full parcel.

They hold that because the limit is there, LL intend that they can do that.


It's an interesting point of view.
Duh!

LOL. Yep you do not want to read that thread Andrew! It would be nice if you or some Linden put in a disclaimer that this is the maximum number of temp prims allowed and that the formula does not take into account frequency, duration or sim impact. If a sim is being negatively impacted then do not be surprised if rezzer/rezzers are confiscated.
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Sindy Tsure
Will script for shoes
Join date: 18 Sep 2006
Posts: 4,103
02-03-2009 17:05
From: Andrew Linden
temp_prim_limit = (regular_prim_limit - current_regular_prims) + minimum(0.5 * regular_prim_limit + 400, 1000)

67 sheep!
Lear Cale
wordy bugger
Join date: 22 Aug 2007
Posts: 3,569
02-04-2009 08:37
From: Alisha Matova
minimum(0.5 * regular_prim_limit + 400, 1000)

Does the ",1000)" mean a maximum of 1000 temp prims on any sized parcel?
Yes, 1000 over and above your normal prim limit (taking into account the part you omitted).

It *should* go without saying that if you're re-rezzing temp prims, you're abusing the purpose of temp-rez prims, so proceed with caution, and be respectful of those sharing your sim.

I wonder what constitues an ARable offense in this regard.
Sindy Tsure
Will script for shoes
Join date: 18 Sep 2006
Posts: 4,103
02-07-2009 10:14
From: Meade Paravane
That's the way I read it. I think the result of Andrews math on the totally empty, 2k-prims parcel might be incorrect.

No.. The math is right - you're thinking the whole thing is enclosed in the minimum (..., 1000) but it's not.

Heya Andrew! Welcome to the forums! :)

When you try to use more temp prims than allowed, does that speed up the deletion of older ones or do the new ones just silently fail to rez? (/me guesses the later)
Thunderclap Morgridge
The sound heard by all
Join date: 30 Sep 2006
Posts: 517
02-07-2009 23:34
This is awesome info. And I agree that using using Temp rezzers as a building is an abuse.
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