Just update to 9.8.1 пн, 24 мар. 2025 г., 21:42 Natarajan, Rajeswari <rajeswari.natara...@sap.com.invalid>:
> Would like to know if anything helped ?. We are trying to upgrade from 9.3 > to 9.8 and seeing performance degradation in query . Please share your > experience if you have also noticed any query perf degradation > > Thanks > > On 2/7/25, 5:32 AM, "Pavel Chumakou" <pavel.chuma...@gmail.com <mailto: > pavel.chuma...@gmail.com>> wrote: > > > [You don't often get email from pavel.chuma...@gmail.com <mailto: > pavel.chuma...@gmail.com>. Learn why this is important at > https://aka.ms/LearnAboutSenderIdentification < > https://aka.ms/LearnAboutSenderIdentification> ] > > > Hi all, > > > After migrating from* Solr 9.6.1* to *Solr 9.7.0 *we discovered significant > query performance degradation. Solr 9.7 works approximately 1.5-3 times > slower than Solr 9.6.1 under the same conditions (the same Solr > configuration, the same collection, the same user queries and query load). > > > We tried to run Solr 9.7 with Java 17 and Java 21, Windows and Linux, > enabling and disabling *multiThreaded *and* > MMapDirectory.enableMemorySegments *parameters. Results are always the > same: significant performance degradation for Solr 9.7 compared to Solr > 9.6.1. > > > Our documents contain 3-9 text fields, user queries are Boolean with *OR > *logic > (q.op=OR), *edismax *query parser, *qf *parameter contains 6 text fields. > To eliminate possible influence of our custom libraries and data, we > created independent Solr search performance benchmark: > https://github.com/pavel-chumakou/solr-benchmark < > https://github.com/pavel-chumakou/solr-benchmark> > This Solr benchmark tool is based on public data (Wikipedia articles) and > can be easily reproduced. > > > Currently we have the following test results: > *Solr 9.6.1* > Search time, ms: 1564 694 554 447 474 404 359 352 453 475 524 413 560 395 > 432 403 397 353 367 487 > > > *Solr 9.7.0* > Search time, ms: 2453 1650 1447 1593 1527 1380 1335 1293 1454 1341 1747 > 1753 1648 1383 1296 1246 1279 1238 1205 1396 > > > Any advice on how to improve Solr 9.7/Solr 9.8 search performance? We > really don't want to migrate back to Solr 9.6.1. > > > Thanks. > > > >
