11. Contrail Analytics Performance Tuning

For large installations, the following changes are required to achieve better performance of contrail database.

By default, the analytics_ttl values are set to -1. We recommend changing the default number to ensure the best performance in highly scaled out environments. An example configuration is as follows:

1. /etc/cassandra/cassandra-env.sh

   -JVM_OPTS="$JVM_OPTS -XX:MaxTenuringThreshold=1"
   +JVM_OPTS="$JVM_OPTS -XX:MaxTenuringThreshold=30"
   

2. /etc/contrail/contrail-collector.conf

   analytics_config_audit_ttl=2160
   analytics_statistics_ttl=24
   analytics_flow_ttl=2
   

Note: Please restart the supervisor services ( supervisor-database, supervisor-analytics) after making these changes.