Stanislav, Could you also try a nightly build to test the later performance improvement on BooleanScorer2? The nightly builds are here: http://people.apache.org/builds/lucene/java/nightly/ The jar is called lucene-core-nightly.jar in the .tar.gz build.
It's not likely that this is faster than the 1.4 BooleanScorer, but one never knows. Regards, Paul Elschot On Tuesday 21 November 2006 17:59, Yonik Seeley wrote: > On 11/21/06, Stanislav Jordanov <[EMAIL PROTECTED]> wrote: > > Switch to the old scorer (via BooleanQuery.setUseScorer14(true) ) > > solved the performance issue - now Lucene 1.9.1 & 2.0.0 perform on the > > same load test just as 1.4.3 does > > > > Thanks a lot Yonik! > > > > Any chance there exists a non-professional explanation what's the > > difference between old and new boolean scorers? > > The original BooleanScorer was a bucket-based scorer that could > deliver docs out of order and thus restricted how it could be used. > It also had a limitation of 32 required or prohibited clauses (because > of an int bitmask). > > BooleanScorer2 removes these limitations, and uses skipTo() where > applicable on sub-scorers. > > -Yonik > http://incubator.apache.org/solr Solr, the open-source Lucene search server > > --------------------------------------------------------------------- > 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]
