Le 19/04/2010 14:14, Invisible nous fit lire :

> During these 4 hours, the HD gets absolutely nailed to the wall.

Now, that's a good way to kill a fresh new SSD... 10000 average
writes... oups, done on the directory structure! Thanks for leveraging
the whole disk...

It might be building a cross reference/multi dimensional access: great
for quick read access later... terrible in write mode, especially if the
algorithm used is silly (like O(x^N) or O(exp(N))...)
Basic tests with a small number of entries displayed no issue.... it
just does not scale to production the size of your company!

(indexing by name, firstname, addresses, any silly idea... using a
bubble sort on files)

It might also be a very sophisticated paging system, with some entries
per page: when a page get filled, you move all the other pages and
redistribute the entries (using some patricia tree with extended key
length..) of the current page between the old and a new one.... one
entry at a time, with initial packet unsorted... or worse: in
pathological order.

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