Difference between revisions of "LlGetMemoryLimit"

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Revision as of 10:29, 29 September 2011


Function: integer llGetMemoryLimit( );

Get the maximum memory a script can use.
Returns the integer amount of memory the script can use in bytes.


Gets the memory limit for the script.
  • The memory limit can be up to 64k.
  • All new scripts start with a limit of 64k
  • All existing scripts have a limit of 64k
  • The memory limit is not the amount of real memory actually used by the script, just the upper limit on it.
LSO scripts will always use exactly 16k
Flag Description
LINK_ROOT 1 refers to the root prim in a multi-prim linked set[1]
Flag Description
LINK_THIS -4 refers to the prim the script is in


All Issues ~ Search JIRA for related Bugs



Link Numbers

Each prim that makes up an object has an address, a link number. To access a specific prim in the object, the prim's link number must be known. In addition to prims having link numbers, avatars seated upon the object do as well.

  • If an object consists of only one prim, and there are no avatars seated upon it, the (root) prim's link number is zero.
  • However, if the object is made up of multiple prims or there is an avatar seated upon the object, the root prim's link number is one.

When an avatar sits on an object, it is added to the end of the link set and will have the largest link number. In addition to this, while an avatar is seated upon an object, the object is unable to link or unlink prims without unseating all avatars first.

Counting Prims & Avatars

There are two functions of interest when trying to find the number of prims and avatars on an object.

integer GetPrimCount() { //always returns only the number of prims
    if(llGetAttached())//Is it attached?
        return llGetNumberOfPrims();//returns avatars and prims but attachments can't be sat on.
    return llGetObjectPrimCount(llGetKey());//returns only prims but won't work on attachments.
See llGetNumberOfPrims for more about counting prims and avatars.


If a script located in a child prim erroneously attempts to access link 0, it will get or set the property of the linkset's root prim. This bug (BUG-5049) is preserved for broken legacy scripts.

See Also


•  llGetLinkNumber Returns the link number of the prim the script is in.
•  llSetMemoryLimit
•  llGetFreeMemory
•  llGetUsedMemory
•  llGetObjectDetails

Deep Notes


  • Scheduled for RC Magnum channel, week of August 3, 2011.
Search JIRA for related Issues


  1. ^ LINK_ROOT does not work on single prim objects. Unless there is an avatar sitting on the object.


function integer llGetMemoryLimit();