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SubjectRe: very large directories
On Tue, Feb 29, 2000 at 09:16:52AM -0500, nbecker@fred.net wrote:
> Sorry, I wasn't very clear. I mean that after the program is done
> creating all these files, that any operations on the files are
> extremely slow. At this time the disk activity has stopped.
>
> I suspect the answer is that the data structures used to represent
> directories are not well suited to efficient operations on extremely
> large directories, but I was just curious.

Indeed they aren't. The more you have filenames in the
directory, the slower the search will be. On overall it
will be in order of O(n^2) where n is number of filenames.

There has been talk about having B-tree on-disk datastructures
for directory processing. Nothing visible of it yet.

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