can you please post the 2 different query(the query which does not cause high response times, the query which takes high response times)
not the hardware specs but the utilisation please (something like : cpu utilization over time, 10%CPU at 10a,m. 20%cpu at 10.10 a.m....and so on) 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 3:52 PM Antonio Nunziante <nunzia...@light-sf.com> wrote: > 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 > > > >
