> Bart wrote:
> 
> Hrm... I've been wondering how much of a hard drive relief
> it would be to put the metadata of the top x most accessed
> files or just up to y MB in of it ramdisk. Considering hard
> drive flutter is a major bummer to performance these days,
> doing a flutter for common filesystem *meta*data seems
> rather silly - and a /lot/ of programs stat() way like crazy.


This has already been approached. See (http://lasr.cs.ucla.edu/conquest) for
details. Basically the mete-data and small files are stored in battery
backed RAM. They showed huge performance increases.

-Tad


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