Messages in this thread | | | Subject | Re: [PATCH] Permit inode & dentry hash tables to be allocated > MAX_ORDER size | From | Dave Hansen <> | Date | Tue, 15 Jun 2004 09:40:53 -0700 |
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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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