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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