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From Li Li <fancye...@gmail.com>
Subject Re: instantiated contrib
Date Thu, 26 Aug 2010 12:29:11 GMT
do you mean that InstantiatedIndex is not as fast as its document says?

2010/8/26 Earwin Burrfoot <earwin@gmail.com>:
> IMHO, Instantiated sucks GC-wise. Put more docs in it, do enough
> queries, and RAMDir eventually outperforms it.
>
> On Thu, Aug 26, 2010 at 11:24, Li Li <fancyerii@gmail.com> wrote:
>> I have about 70k document, the total indexed size is about 15MB(the
>> orginal text files' size).
>>                dir=new RAMDirectory();
>>                IndexWriter write=new IndexWriter(dir,...;
>>                for(loop){
>>                     writer.addDocument(doc);
>>                }
>>        writer.optimize();
>>        writer.close();
>>
>>        IndexReader ir=IndexReader.open(dir,true);
>>        InstantiatedIndex ii=new InstantiatedIndex(ir);
>>        InstantiatedIndexReader iir=new InstantiatedIndexReader(ii);
>>        is=new IndexSearcher(ir);
>>        is2=new IndexSearcher(iir);
>>
>>              I calculate the time by:
>>        long searchStart=System.nanoTime();
>>        TopDocs docs=is.search(bQuery,Integer.MAX_VALUE);
>>        long searchEnd=System.nanoTime();
>>
>>             I searched 10,000 documents and the time of RAMDirectory
>> and instantiated
>>             the time used is time1: 21s(21812978000 ns) time2:
>> 20s(20713817000 ns)
>>             I also calulate the time including get field value:
>>                total1: 23852ms total2: 22610ms
>>            it seems instantiated is not much faster than
>> RAMDirectory. Is there any thing wrong I used? my max memory is 4GB
>>
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>
>
>
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> Kirill Zakharenko/Кирилл Захаренко (earwin@gmail.com)
> Phone: +7 (495) 683-567-4
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