Hi, I think this describes what's going on:
10 load N stored queries 20 parse N stored queries, keep them in some List forever 30 for each incoming document create a new MemoryIndex instance "mi" 40 for query 1 to N do mi.search(query) Over time this step 40 takes longer and longer and longer -- if some of the queries are MultiPhraseQueries. This is even with with mergeSort being used in MultiPhraseQuery. Otis ---- Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch Lucene ecosystem search :: http://search-lucene.com/ ----- Original Message ---- > From: Michael McCandless <luc...@mikemccandless.com> > To: java-user@lucene.apache.org > Sent: Mon, May 2, 2011 12:15:40 PM > Subject: Re: MultiPhraseQuery slowing down over time in Lucene 3.1 > > By "slowing down over time" do you mean you use the same index (no new > docs added) yet running the same MPQ over and over you see it taking > longer to execute over time? > > Mike > > http://blog.mikemccandless.com > > On Mon, May 2, 2011 at 12:00 PM, Tomislav Poljak <tpol...@gmail.com> wrote: > > Hi, > > after running tests on both MemoryIndex and RAMDirectory based index > > in Lucene 3.1, seems MultiPhraseQueries are slowing down over time > > (each iteration of executing the same MultiPhraseQueries on the same > > doc, seems to require more and more execution time). Are there any > > existing/known issues related to the MultiPhraseQuery in Lucene 3.1 > > which could lead to this performance drop? > > > > Tomislav > > > > --------------------------------------------------------------------- > > 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
