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From Michael McCandless <luc...@mikemccandless.com>
Subject Re: lucene 2.4 sorting slowness
Date Wed, 17 Dec 2008 21:46:18 GMT

Are you warming the searcher first, and then testing the sort  
performance?  (The first query is slow because it populates the  
FieldCache, internally, which is then reused for subsequent queries as  
long as you don't close that reader/searcher).

Mike

Chris Salem wrote:

> Hello,
> I have an index with ~4000000 documents and some 200 fields.   
> Searching without sorting takes around 300 - 500 ms, when sorting on  
> dates (formated as 'yyyy-mm-dd') searching time takes on average 15  
> seconds. Here's the code that does the search:
> hits = searcher.search(query, new Sort(new  
> SortField("slast_modified", false)));
> and here's how that field is being indexed:
> doc.add(new Field("slast_modified", "2008-12-12", Field.Store.NO,  
> Field.Index.NOT_ANALYZED));
> Am I doing something wrong?  Is there a bug in lucene and if so is  
> there a way to work around it so that search speed is increased to  
> something reasonable?
> Thanks
> Sincerely,
> Chris Salem
> Development Team
> Main Sequence Technologies, Inc.
> PCRecruiter.net - PCRecruiter Support
> chris@mainsequence.net
> P: 440.946.5214 ext 5458
> F: 440.856.0312
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