Hi Nils, I just ran your queries with the latest (not yet announced) Feb2009 release (http://monetdb.cwi.nl/downloads/sources/Feb2009/) and received an answer in 1.5 (Q1) and 2.5 (Q2) seconds. If you still have problems with the new version, then please let us know. Jan P.S.: The E-Mail subject seems slightly off topic here :) On Mar 4, 2009, at 16:30, Nils Grimsmo wrote:
Hi, I just upgraded from the Augst to the Noveber super-ball, and the performance has worsened badly.
Example queries on dblp.xml (441 MB):
Q0: count(/dblp//author[text()="Michael Stonebraker"]) Q1: count(/dblp/*/author[text()="Michael Stonebraker"])
Query time in milliseconds:
August November Q0 1100 4867 Q1 3993 17999
I have compiled with --enable-optimise both times. I query with:
mclient --language=xquery --algebra --time < $QUERYFILE
Is this performance degradation expected? If so, why?
BTW: Is there any way of finding how much disk space a collection uses?
Thank you for contributing free software!
Klem fra Nils
-- http://www.idi.ntnu.no/~nilsgri/ Why is this thus? What is the reason of this thusness? - Artemus Ward
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-- Jan Rittinger Lehrstuhl Datenbanken und Informationssysteme Wilhelm-Schickard-Institut für Informatik Eberhard-Karls-Universität Tübingen http://www-db.informatik.uni-tuebingen.de/team/rittinger