How many of these files are actually accessed within an our? Or within
a day?
>
> 1) There are very few inodes that have more than one parent
> (i.e. more than one filename pointing to them)
No, a news spool of INN actually contains many hard links.
> 3) On most modern hard disks, the cost of reading 4K as
> opposed to reading 1K is minute (it's dominated by
> seek times etc).
It could actually speed up access. But I think prefetching is
done already anyway, at various levels.
>Then it occured to me that if you force aligning inodes on 64 byte
>boundries, the addressable filesystem goes to 256gig (probably enough
>for now).
No. Terabyte disk arrays already exist, and terabyte disks and files
will be there within a few years. If we ignore this we end up with
a degenerate system like Windoze.
>Comments?? (people dying to implement such a beast? :)
I guess something should be done, but not this way. There are
several new filesystems under construction. Perhaps one of these
can implement some optimizations.
hjb
--
Veni, Vidi, VISA:
I came, I saw, I did a little shopping.