Changing the stack size and memtable space

Change the stack size to improve performance under Tomcat.

cassandra.yaml

The location of the cassandra.yaml file depends on the type of installation:

Package installations
Installer-Services installations

/etc/dse/cassandra/cassandra.yaml

Tarball installations
Installer-No Services installations

installation_location/resources/cassandra/conf/cassandra.yaml

Some Solr users have reported that increasing the stack size improves performance under Tomcat. To increase the stack size, uncomment and modify the default -Xss256k setting in the cassandra-env.sh file. Also, decreasing the memtable space to make room for Solr caches might improve performance. Modify the memtable space using the memtable_heap_space_in_mb and memtable_offheap_space_in_mb properties in the cassandra.yaml file.