If new Sort() fails to sort by score, that's a bug! Can you please open a Jira issue?
Mike McCandless http://blog.mikemccandless.com On Mon, Sep 9, 2013 at 5:21 AM, Mirko Sertic <mirko.ser...@web.de> wrote: > Hi > > Basically i am running a load test. For every run i executed about 1 million > queries on the same index with the same query string, so it should be warmed > up very well ;-) It performs about 8x faster with an empty Sort() instance > than the first option. Still do not get it. An empty Sort instance should > sort by score, according to the default constructor. > > Providing no sort instance finally invokes > > protected TopDocs search(Weight weight, ScoreDoc after, int nDocs) throws > IOException > > while providing a Sort instance finally invokes > > protected TopFieldDocs search(Weight weight, FieldDoc after, int nDocs, > Sort sort, boolean fillFields, > boolean doDocScores, boolean doMaxScore) > throws IOException > > with doDocScores and doMaxScore set to false. > > Seems like providing an empty Sort() instances should sort by score according > to its default constructor. But no scoring is done by the IndexSearcher, so > there is nothing so sort at all. So from this point of view the scoring > computation does cause the slower queries. > > Regards > Mirko > > Gesendet: Montag, 09. September 2013 um 09:55 Uhr > Von: "Toke Eskildsen" <t...@statsbiblioteket.dk> > An: "java-user@lucene.apache.org" <java-user@lucene.apache.org> > Betreff: Re: Aw: Re: Strange performance of Lucene 4.4.0 > On Sun, 2013-09-08 at 15:15 +0200, Mirko Sertic wrote: >> I have to check, but my usecase does not require sorting or even >> scoring at all. I still do not get what the difference is... > > Please describe how you perform your measurements. How do you ensure > that the index is warmed equally for the two cases? > > - Toke > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
