Hi, We are trying to migrate to Solr-8.11.0 from Solr-6.5.1. Following are the details of Solr installation.
Server : EC2 instance with 32 CPUs and 521 GB Storage : EBS Volume. General Purpose SSD (gp3) with 3000/5000 IOPS Ubuntu :Ubuntu 20.04.3 LTS Java : openjdk 11.0.14 SolrCloud : 12 shards having a total 4+ TB index. Each node has a 30GB max memory limit. GC setting on Solr : G1GC Solr query timeout : 5 minutes During testing we observed a high CPU utilisation and few of the queries with wildcard queries are timing out. These queries are getting executed completely on Solr-6.5.1. After tuning a few of the parameters of GC settings the CPU utilisation came down but it is still high when compared with Solr-6.5.1 and some queries with wildcard queries are still failing. Kindly provide your suggestions. Thanks, Modassar
