Messages in this thread | | | Date | Wed, 5 Mar 2003 04:26:54 -0800 | From | William Lee Irwin III <> | Subject | Re: High Mem Options |
| |
On Wed, Mar 05, 2003 at 06:28:36AM -0500, Reed, Timothy A wrote: > Yet another quick question...is 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |