Hi, I am trying to replace our solr4 cluster with a solr 8.1.1 cluster and am running into a problem where searches are taking way to long to respond. The clusters are set up with the same number of servers, same number of shards, and same number of replicas. They are indexing the same documents, but are returning results the results sometimes as much as 10 times faster on the solr4 cluster than they are on the solr6 cluster.
for example, solr4 cluster 30 machines 1 collection 6 shards replication factor 5 sorl version 4.10.4 debian 9.9 8 vCPU 16 GB memory approximately 18 million documents config *:* query across 10 times returning [13234, 18714, 13384, 12966, 12192, 18420, 16592, 15691, 13373, 12458] vs solr8 cluster 30 machines 1 collection 6 shards replication factor 5 sorl version 8.1.1 debian 9.9 8 vCPU 16 GB memory approximately 18 million documents *:* query across 10 times returning [93359, 94263, 86949, 90747, 91171, 91588, 87921, 88632, 88035, 89137] please let me know what else I can include that may help identify where the slowness is occuring. Thank you, *Manzama*a MODERN GOVERNANCE company Russell Bahr Lead Infrastructure Engineer USA & CAN Office: +1 (541) 306 3271 USA & CAN Support: +1 (541) 706 9393 UK Office & Support: +44 (0)203 282 1633 AUS Office & Support: +61 (0) 2 8417 2339 543 NW York Drive, Suite 100, Bend, OR 97703 LinkedIn <http://www.linkedin.com/company/manzama> | Twitter <https://twitter.com/ManzamaInc> | Facebook <http://www.facebook.com/manzamainc> | YouTube <https://www.youtube.com/channel/UCBo3QoqewyNoo7HiT_BFuRw>
