setting up real and virtual memory in a shared arena/ mem management algorithm

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From: Michael Lewis (mlewis++at++interaccess.com)
Date: 07/18/2001 16:14:48

Hello

I notice from the previous emails on increasing the shared arena by
using PFSHAREDSIZE or if more than
450 MB using the pfSharedArenaSize.

I was wondering when you use the PFSHAREDSIZE env variable or
pfSharedArenaSize to increase the arena size,
is there any virtual memory that is mapped to the arena or or is that
arena is reserved for only physical memory.
If there is virtual memory mapped, is there a way to tell how much of it
is mapped to the shared arena.

Also, is there a way to explicitly set the amount of physical memory and
virtual memory that you want in
your shared arena.

Lastly - if you have a pfSequence node with many children that are
"pfLoadFile" pfNodes such that some
virtual memory is used, when the pfSequence is animated, what memory
algorithm (i.e LRU) does
performer use to swap in an out the pfNode frames . Are there any
papers or info in manuals that that explain performer's
or IRIX memory management algorithm.

  Mike Lewis
 mlewis++at++evl.uic.edu

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