Each node has: - 32 GB heap size over 50 GB RAM - 16 core The query is not the same.
-----Messaggio originale----- Da: Deepak Goel <deic...@gmail.com> Inviato: venerdì 8 agosto 2025 11:19 A: users@solr.apache.org Oggetto: Re: Occasional very slow queries (120s) despite low average latency Is it the same query across times? Also, do you mind posting the hardware utilization? Deepak "The greatness of a nation can be judged by the way its animals are treated - Mahatma Gandhi" +91 73500 12833 deic...@gmail.com LinkedIn: www.linkedin.com/in/deicool "Plant a Tree, Go Green" Make In India : http://www.makeinindia.com/home On Fri, Aug 8, 2025 at 1:59 PM Antonio Nunziante <nunzia...@light-sf.com> wrote: > Hello, > > > > we are experiencing an occasional performance issue with our Solr cluster. > > Normally, the average search time is around *50 ms*, but from time to > time we see a query taking *up to 120 seconds* to complete. > > This behavior is rare but concerning, especially because it sometimes > happens during *periods of very low traffic*. > > > > *Technical environment:* > > - Apache Solr 8.11.1 deployed in a 3-node cluster > - Red Hat, Inc. OpenJDK 64-Bit Server VM *11.0.25* (build > 11.0.25+9-LTS) > > > > We would like to understand: > > - What could cause such a sudden slowdown in otherwise fast searches? > - Which Solr metrics, logs, or debugging tools should we check to > pinpoint the root cause? > - Are there recommended practices for capturing detailed query > execution traces when these rare slowdowns occur? > > > > Any guidance or suggestions on how to monitor and diagnose this type > of sporadic latency would be greatly appreciated. > > > > Thank you, > Antonio >
