[sldev] [VWR] idle_mem_check()

[Robin Cornelius]

Hey Everyone,

Whist looking through the idle loop i came across the idle_mem_check()
function. What this does is every frame allocate 10MB of memory in 1MB
chunks then frees them again, just to check it can.

This seems like a generally bad idea and if you are already hitting swap
space its going to contribute to a swap storm and lets face it, if you
can't allocate 10MB your pretty screwed anyway, something going to crash
or be terminated *very* soon.

I would also imagine this can lead to memory fragmentation (although i
am blissfully unaware how well OS's cope with this these days).

I did get a small increase in FPS by removing it. My viewer was at
5.9-6.0 FPS in a sim with no avatars in or out (or moving) after
removing the idle_mem_check() i got 7.0 FPS in exactly the same location.

I vote its removed but wanted to see if there are any comments or good
reasons why it needs to still be there.

Robin



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