On Friday, Feb 13, at 9:30am +0100, Jim Fulton wrote:
Have you done any scale experiments?

Indeed, I've done tests with some binary trees with a heigth from 2 till 20. The results pointed out, that filling the index structures required very much more time than the query itself (which was expected, of course :) ).

For a tree with a height of e.g. 14 (round about 32000 objects) it took 20 seconds to fill the ZODB (including indexstructures in gocept.objectquery) and less than 2 seconds for some testing queries.

Of course, the times raise exponentially with the height of the tree.

However, the main development focus until now was in stability and not in performance. Probably, performance can be increased with simple code refactorings.

Sebastian Wehrmann · s...@gocept.com
gocept gmbh & co. kg · forsterstraße 29 · 06112 halle (saale) · germany
http://gocept.com · tel +49 345 1229889 12 · fax +49 345 1229889 1
Zope and Plone consulting and development

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