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 <fancye...@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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Kirill Zakharenko/Кирилл Захаренко (ear...@gmail.com)
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