Re: High Mem Options

William Lee Irwin III (
Wed, 5 Mar 2003 04:26:54 -0800

On Wed, Mar 05, 2003 at 06:28:36AM -0500, Reed, Timothy A wrote:
> Yet another quick there any down side to using the
> 64GB option over the 4GB option if the machine only has 2GB of RAM onboard??
> I would think this would be a performance issue? Does the kernel only use
> the translation table if it has to access any memory location over 4GB?

Yes, the additional level of pagetables slows things down quite a bit.

-- wli
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