fallout of 16K stacks

[Andi Kleen]

Since the 16K stack change I noticed a number of problems with
my usual stress tests. They have a tendency to bomb out
because something cannot fork.

- AIM7 on a dual socket socket system now cannot reliably run 
>1000 parallel jobs.
- LTP stress + memhog stress in parallel to something else
usually doesn't survive the night.

Do we need to strengthen the memory allocator to try
harder for 16K?

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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