Hans Reiser wrote:
>
> To explain what hpa says:
>
> hashing destroys correlations in access (locality of reference), B-trees can
> preserve it, RAM is less sensitive to correlations in access than disk is, thus
> there is less motivation for balanced trees for in RAM accesses. The more you
> employ technologies like RAMBUS (somewhat) and NUMA (much more so), the more
> motivation to use trees.
>
With "trees" here read "B-trees, or other trees with high fanout."
In-RAM structures usually use low-fanout trees.
-hpa
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