Hello Michael, Thanks for checking. Sorry for bringing this up again. First of all, I am ok with proceeding with the Lucene 9.4 release and leaving the performance investigations for later.
I am interested in what's the maxConn/M value you used for your tests? What was the heap memory and the size of the RAM buffer for indexing? Usually, when we have multiple segments, recall should increase, not decrease. But I agree that with multiple segments we can see a big drop in QPS. Here <https://gist.github.com/mayya-sharipova/e4d66af49a5b67e8a2338d0c3c522a9e> is my investigation with detailed output of the performance difference between 9.3 and 9.4 releases. In my tests I used a large indexing buffer (2Gb) and large heap (5Gb) to end up with a single segment for both 9.3 and 9.4 tests, but still see a big drop in QPS in 9.4. Thank you. On Fri, Sep 9, 2022 at 12:21 PM Alan Woodward <romseyg...@gmail.com> wrote: > Done. Thanks! > > > On 9 Sep 2022, at 16:32, Michael Sokolov <msoko...@gmail.com> wrote: > > > > Hi Alan - I checked out the interval queries patch; seems pretty safe, > > please go ahead and port to 9.4. Thanks! > > > > Mike > > > > On Fri, Sep 9, 2022 at 10:41 AM Alan Woodward <romseyg...@gmail.com> > wrote: > >> > >> Hi Mike, > >> > >> I’ve opened https://github.com/apache/lucene/pull/11760 as a small bug > fix PR for a problem with interval queries. Am I OK to port this to the > 9.4 branch? > >> > >> Thanks, Alan > >> > >> On 2 Sep 2022, at 20:42, Michael Sokolov <msoko...@gmail.com> wrote: > >> > >> NOTICE: > >> > >> Branch branch_9_4 has been cut and versions updated to 9.5 on stable > branch. > >> > >> Please observe the normal rules: > >> > >> * No new features may be committed to the branch. > >> * Documentation patches, build patches and serious bug fixes may be > >> committed to the branch. However, you should submit all patches you > >> want to commit to Jira first to give others the chance to review > >> and possibly vote against the patch. Keep in mind that it is our > >> main intention to keep the branch as stable as possible. > >> * All patches that are intended for the branch should first be committed > >> to the unstable branch, merged into the stable branch, and then into > >> the current release branch. > >> * Normal unstable and stable branch development may continue as usual. > >> However, if you plan to commit a big change to the unstable branch > >> while the branch feature freeze is in effect, think twice: can't the > >> addition wait a couple more days? Merges of bug fixes into the branch > >> may become more difficult. > >> * Only Jira issues with Fix version 9.4 and priority "Blocker" will > delay > >> a release candidate build. > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org > >> For additional commands, e-mail: dev-h...@lucene.apache.org > >> > >> > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org > > For additional commands, e-mail: dev-h...@lucene.apache.org > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: dev-h...@lucene.apache.org > >
