I like this, thanks for the contribution! Developers: Shall we include this? Shall we include this as is in a new org.apache.lucene.util package? Shall we include this as is in the org.apache.lucene.store package? Shall we just add the convert method to FSDirectory class?
Thanks, Otis --- "Spencer, Dave" <[EMAIL PROTECTED]> wrote: > > A few months ago I suggested adding a utility > that converts a Directory to a RAMDirectory - useful if > the index fits into RAM & are you're performing a series of expensive > searches on the index. It seems to have no additional startup cost > (surprising) and reduces execution time approx 20% (seems to be > reasonable). > I may have missed this or an equivalent utility being in the source > base > but looked > at rc5 and didn't see it. > > So I'm "reposting" this info & putting up a web page so this can > be reused & found by, um, searchers. > > The utility drops in easy to existing code. > You replace a line like this: > searcher = new IndexSearcher( indexName); > with > searcher = new IndexSearcher( Rammer.convert( indexName)); > > And that's it - approx reduction of 20% of runtime in some tests. > For 2 experimental apps that do extensive term analysis (freq of > pairs > of terms) > the time reductions are: > app 1: 45sec to 35sec > app 2: 22sec to 18sec > > This is just by making a 1 line change. > > > I've attached the file here and written it up a bit > on the web: > > http://www.tropo.com/techno/java/lucene/rammer.html > > I'm not an approved code contributor and ask that those who are > consider > adding this to the base - could be a ctr to RAMDirectory or a method > in > Directory of FSDirectory or a separate utility. > > ATTACHMENT part 2 application/octet-stream name=Rammer.java > -- > To unsubscribe, e-mail: > <mailto:lucene-dev-unsubscribe@;jakarta.apache.org> > For additional commands, e-mail: <mailto:lucene-dev-help@;jakarta.apache.org> __________________________________________________ Do you Yahoo!? Faith Hill - Exclusive Performances, Videos & More http://faith.yahoo.com -- To unsubscribe, e-mail: <mailto:lucene-dev-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:lucene-dev-help@;jakarta.apache.org>
