Messages in this thread | | | Date | Thu, 25 Jun 2009 07:18:07 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCHSET] percpu: generalize first chunk allocators and improve lpage NUMA support |
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Andi Kleen wrote: >>> >> *Ahem* virtual machines *ahem*... > > And? Even there's not that big typically. > > The traditional problem was just for 128 NR_CPUs kernel were nothing > was sized based on machine capacity. > > Also on large systems the VMs shouldn't be sized for full capacity. >
We have already have cases where the "possible" CPUs have eaten up the entire vmalloc area on 32 bits. In real use. It's a real problem.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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