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- In article <4cf7vs$gfk@ArtWorks.apana.org.au> james@Snark.apana.org.au (James Burton) writes:
- > Christopher D. Judd (cdj@gmk02.chem.rpi.edu) wrote:
- > ...
-
- > This is a common misconception. There is no significant performance hit
- > with virtual memory, the address translations are done in hardware
- > effectively as part of the RAM. If they couldn't be done within a RAM cycle
- > then somebody would find a faster way of doing it (read wider RAM).
- > So there is no performance hit. You do however get the appearance of
- > more RAM, the extra RAM is slower than adding more RAM chips, but to
- > call that a performance hit is misleading. Rather it is extra functionality.
- >
-
- Of course I was referring to the performance due to memory protection,
- not virtual memory. Perhaps this was not clear in the original post.
-
- -Chris
-
- --
- -----------------------------------------------------------------------------
- | Christopher D. Judd |
- | Rensselaer Polytechnic Inst. juddc@rpi.edu NLO & spectroscopy: |
- | Dept. of Chemistry 518 276-8982 Fun with photons |
- | Troy, NY 12180-3590 |
- -----------------------------------------------------------------------------
-