Querying performance decrease in 1.9.1 and 2.0.0

2006-11-21 Thread Stanislav Jordanov
Hi guys, We've identified a significant querying performance decrease after switching from Lucene 1.4.3 to 1.9.1. It is steadily demonstrated no mater if the concurrent querying threads are 1, 2, 4 or 8 (or even more) - If N queries are executed against 1.9.1 for a given time, then 1.4.3 execu

Re: Querying performance decrease in 1.9.1 and 2.0.0

2006-11-21 Thread Paul Elschot
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 th

Re: Querying performance decrease in 1.9.1 and 2.0.0

2006-11-21 Thread Chris Hostetter
: 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 th

Re: Querying performance decrease in 1.9.1 and 2.0.0

2006-11-21 Thread Yonik Seeley
On 11/21/06, Stanislav Jordanov <[EMAIL PROTECTED]> wrote: We've identified a significant querying performance decrease after switching from Lucene 1.4.3 to 1.9.1. It is steadily demonstrated no mater if the concurrent querying threads are 1, 2, 4 or 8 (or even more) - If N queries are executed a

Re: Querying performance decrease in 1.9.1 and 2.0.0

2006-11-21 Thread Stanislav Jordanov
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 boole

Re: Querying performance decrease in 1.9.1 and 2.0.0

2006-11-22 Thread Stanislav Jordanov
Paul, We are working on delivering the next release by the end of the week so I have to take care of 2 or 3 issues before I try the nightly build. I promise to try it and report the results here. Best, Stanislav Paul Elschot wrote: Stanislav, Could you also try a nightly build to test the la

Re: Querying performance decrease in 1.9.1 and 2.0.0

2006-11-27 Thread Paul Elschot
Stanislav, On Wednesday 22 November 2006 09:52, Stanislav Jordanov wrote: > Paul, > We are working on delivering the next release by the end of the week so > I have to take care of 2 or 3 issues before I try the nightly build. > I promise to try it and report the results here. I have made a firs

Re: Querying performance decrease in 1.9.1 and 2.0.0

2006-11-28 Thread Stanislav Jordanov
Paul, we are using a slightly modified version of Lucene, so in order to run the performance tests on a nightly build, I need Lucene's sources, not the compiled classes. Is there a nice and easy way to get them? Stanislav Stanislav Jordanov wrote: Paul, We are working on delivering the next

Re: Querying performance decrease in 1.9.1 and 2.0.0

2006-11-28 Thread Paul Elschot
On Tuesday 28 November 2006 12:12, Stanislav Jordanov wrote: > Paul, > we are using a slightly modified version of Lucene, > so in order to run the performance tests on a nightly build, I need > Lucene's sources, not the compiled classes. > Is there a nice and easy way to get them? The sources ar