OK, then Yonik might be right about the multi-level skiplists code which is new in 2.2. I'd love to see the performance numbers of the same index built with 2.3, if possible? You could simply migrate it to 2.3 by using IndexWriter.addIndexes().
In my performance tests (LUCENE-866) I measured an average performance gain of 20% for AND queries. Of course, if you run 2.3 against an index built with 2.1, then the more complex multi-level skiplist code gets executed on the simpler 2.1 data structures. However, I don't think the slowdown should be that big (13%). I'll look into the code tomorrow (have to go to bed now, it's 3am), maybe I can find something out. Toke Eskildsen wrote: > On Tue, 2008-01-22 at 02:22 -0800, Michael Busch wrote: >> Is your default operator AND or OR? > > AND > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
