Re: [PATCH 0/3] NUMA boot hash allocation interleaving

Andi Kleen
2004-12-14T19:13:52Z

On Tue, Dec 14, 2004 at 10:59:50AM -0800, Martin J. Bligh wrote:
> > NUMA systems running current Linux kernels suffer from substantial
> > inequities in the amount of memory allocated from each NUMA node
> > during boot. In particular, several large hashes are allocated
> > using alloc_bootmem, and as such are allocated contiguously from
> > a single node each.
>
> Yup, makes a lot of sense to me to stripe these, for the caches that

I originally was a bit worried about the TLB usage, but it doesn't
seem to be a too big issue (hopefully the benchmarks weren't too
micro though)

> didn't Manfred or someone (Andi?) do this before? Or did that never
> get accepted? I know we talked about it a while back.

I talked about it, but never implemented it. I am not aware of any
other implementation of this before Brent's.

-Andi