Re: [PATCH] Permit inode & dentry hash tables to be allocated >MAX_ORDER size

[Dave Hansen]

On Sat, 2004-06-12 at 08:00, Martin J. Bligh wrote:
> >> Since vmalloc() maps the pages with small pagetable entries (unlike most
> >> of the rest of the kernel address space), do you think the interleaving
> >> will outweigh any negative TLB effects?  
> > 
> > I think so, yes (assuming you run the benchmark on all CPUs)
> 
> On the other hand, there's no reason we can't hack up a version of vmalloc
> to use large pages, and interleave only based on that. 

Think about ppc64 where the large page size is 16MB.  That might hurt
interleaving a bit if the structure is only 32MB.  It's better than
*everything* on node 0, but not by much.  

-- Dave

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