Re: [Bug 3268] New: Lowmemory exhaustion problem with v2.6.8.1-mm4 16gb

[Hugh Dickins <hugh@veritas.com>]

On Tue, 24 Aug 2004, keith wrote:
> 
> Ok I created an attachment in the bug for the slab/buddy/mem info.  
> You can watch zone normal get exhausted :)
> http://bugme.osdl.org/show_bug.cgi?id=3268

Thanks.  Yes, your lowmem is full of Slab, and that's entirely
unsurprising since you have CONFIG_DEBUG_PAGEALLOC on: so every
slab object needs a full 4096-byte page to itself (well, there
are some exceptions, but that doesn't change the picture).

That's a _very_ distorting config option, and I think this means that
your report is of no interest in itself - sorry.  But it does raise a
valid question whether it can happen in real, non-debug life - thanks.

I'll do the arithmetic on that when I've more leisure: I expect the
answer to be that it can happen, and I ought to adjust defaulting of
maximum tmpfs inodes.

Hugh

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