Hi, We are encountering issue with GC.
Randomly nearly once a day there are consecutive full GC with no memory reclaimed. So the old generation heap usage grow up to the limit. Solr stop responding and we need to force restart. We are using Solr 6.6.1 with Oracle 1.8 JVM. The JVM settings are the default one with CMS GC. Solr is configured as standalone in master/slave replication. Replication are pooled each 10 minutes. Hardware has 4 vcpu and 16Gb RAM Both Xms and Xmx are set to 6Gb. The core contain 1.200.000 documents, with a lot of fields both stored and indexed without docValues enabled. The file system core size is 11Gb All Solr cache are sized to 1024 with autowarmcount to 256 Queries rate is low (10 per seconds). The only memory consuming feature are sort and facet. There are 10 facets from 10 to 2000 distinct values I don't see errors or warning in solr logs about opening or warming new searchers. here is link to gceasy report. http://gceasy.io/my-gc-report.jsp?p=c2hhcmVkLzIwMTcvMTIvMS8tLXNvbHJfZ2MubG9nLjAuemlwLS0xMS0xNC0zMA== Gceasy suggest to increase heap size, but I do not agree Any suggestion about this issue ? Regards. Dominique -- Dominique Béjean 06 08 46 12 43
