Author: Jesper Antonsson
Date: 01:16:41 07/27/02
Go up one level in this thread
On July 26, 2002 at 00:43:55, Dann Corbit wrote:
>I think if the EGTB files were held in memory, there would be an enormous gain.
>The problem is that disk is thousands of times slower than ram, and benefits are
>eaten by disk accesses (my pet theory).
>
>With 64 bit computing, perhaps we will see systems with 20 or 30 gigs of ram
>before long (maybe a couple years). A gigabyte of ram is already less than 500
>dollars {but 32 bit PC's only address 4 gigs tops}. Then, with more than 20
>gigs of ram, you could hold every 5 man EGTB file [decompressed!] in ram. I
>suspect we will see big benefits in that case.
The problem is, when we get that far, full 6 man tables on a hard drive aren't
far away. Then search performance of the 5 man is irrelevant, since it is 6 man
we'll encounter in search. But perhaps you believe 5 man in RAM is more
beneficial than 6 man on disk (and more RAM for hash tables instead)? I don't,
but that's for experiments to decide, I guess.
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