Re: How to determine what portion of memory is cached?

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> > Is there a way in the kernel startup code (or anywhere in kernel
> > for that matter) to determine what portions of physical system
> > RAM are cached?
>
> The extended memory queries from the BIOS (E820) do actually provide this
> information if I remember rightly

Well, and the same bios call reports ROM memory as being usable RAM on
my toshiba :-).

If you stay away from 640KB..1MB region, common possibilities are that
everything >64MB is not cached, or that everything >16MB is not
cached. It should be rather easy to benchmark that.
Pavel

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• Next message: Chris Wing: "[PATCH] 32-bit UID support for 2.3.27"
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