Hi Dirk, You are right, I was using an old 8.0 BaseX version (seems to be the one from 23/09/2014). The problem does not appear in the latest release. Thank you !
2015-01-02 19:29 GMT+01:00 Dirk Kirsten <d...@basex.org>: > Hello Jean-Marc, > > what version of BaseX did you use? I tried with the latest snapshot and > used the XMark dataset (with factor 80, which produces around the same > number of elements (133653910 to be exact) you had) and got the following > output with an up-to-date index: > > - 0.01 ms > - 0.01 ms > - 0.0 ms > > If it isn't a bug in a previous version of BaseX, I would guess you > reached the inline limit (http://docs.basex.org/wiki/Options#INLINELIMIT). > You might want to try setting it to a higher value. > > Cheers, > Dirk > > > On 01/02/2015 10:19 AM, jean-marc Mercier wrote: > > Hello (and happy new year 2015 !) > > > > I am facing some performance issues opening "big" databases due to an > > (unexpected for me) argument evaluation during function composition. Is > > this a normal behavior ? > > > > Cheers > > > > Here is a code description : > > > > declare variable $db := db:open("MyBigDataBase"); > > declare function local:elts($db){$db//element()}; > > declare function local:compose($f1 as function(*), $f2 as function(*)) as > > function(*){ function($a) { $f1($f2($a)) }}; > > > > declare function local:count_elt($db) {count(local:elts($db))}; > > prof:time(local:count_elt($db)), > > prof:time(count(local:elts($db))), > > prof:time(local:compose(count#1,local:elts#1) ($db)) > > > > ouput : > > 3.1 ms > > 0.02 ms > > 100047.53 ms > > 134666491 134666491 134666491 > > > > -- > Dirk Kirsten, BaseX GmbH, http://basex.org > |-- Firmensitz: Blarerstrasse 56, 78462 Konstanz > |-- Registergericht Freiburg, HRB: 708285, Geschäftsführer: > | Dr. Christian Grün, Dr. Alexander Holupirek, Michael Seiferle > `-- Phone: 0049 7531 28 28 676, Fax: 0049 7531 20 05 22 > >
