I think this is a good idea, for indexes that can't fit in IO cache.
Report back if you get good results :)  I think FSD opens up all sorts
of interesting possibilities.

Mike

On Tue, Nov 24, 2009 at 5:31 PM, Otis Gospodnetic
<otis_gospodne...@yahoo.com> wrote:
> Hello,
>
> Would it make sense and be possible to spread different index files over 
> multiple disks (without resorting to putting an index on a RAID)?
> For example, what if the index files didn't live in a single index dir, but 
> were organized by their type in a snallow dir tree, like this:
>
> /path/to/index:
>   tis/<tis files here>
>   ftd/<fdt files here>
>   prx/<prx files here>
>   ...
>
> Then one could symlink these tis, fdt, prx, etc. dirs to locations that are 
> really on different disks.
> Is this doable and would it help imrpve performance?  I think it could 
> improve segment merging, index optimization, and searches, because N disk 
> heads would be able to do ~N times more work because of parallelization.
>
>
> But the idea seems to simple that it makes me think I'm missing something, 
> otherwise it would have already been done. :)
>
> Otis
> --
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