Re: [discuss] mmap, mbind and write to mmap'ed memory crashes2.6.16-rc1[2] on 2 node X86_64

From: Christoph Lameter
Date: Mon Feb 06 2006 - 13:43:28 EST


On Mon, 6 Feb 2006, Andi Kleen wrote:

> > If node 0 is exhausted then you have an OOM situation.
>
> No - it could just need to free some cleanable pages first. That's
> a long way before going OOM.

Then node 0 still has memory available. So you suspect zone_reclaim?

> > > but with a full free local node that code path is never triggered)
> >
> > Wamt me to test the OOM path for mbind?
> I already know it oopses - someone else reported that. If you feel
> motivated feel free to fix.

We also have a minor issue with huge pages. If the pools are exhausted
then the kernel will terminate the application with Bus Error.

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