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Apache Cassandra Performance Tuning: What We Learned

ScyllaDB · published 19 May 2026

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Cassandra 4.0 vs. Cassandra 3.11: Performance Comparison Read at the source ↗

scylladb.com

https://www.scylladb.com/tech-talk/scylladb-is-no-longer-just-a-faster-cassandra/

scylladb.com

Scaling Performance Comparison: ScyllaDB Tablets vs Cassandra vNodes Read at the source ↗

scylladb.com

https://tobert.github.io/pages/als-cassandra-21-tuning-guide.html

tobert.github.io

https://www.scylladb.com/wp-content/uploads/apache-cassandra-tuning.png

scylladb.com

https://cassandra.apache.org/doc/latest/cassandra/managing/configuration/cass_yaml_file.html

cassandra.apache.org

https://cassandra.apache.org/doc/4.0/cassandra/new/streaming.html

cassandra.apache.org

https://web.archive.org/web/20240829103756/https://cassandra.apache.org/doc/4.1/cassandra/architecture/streaming.html

web.archive.org

https://web.archive.org/web/20250213121633/https://cassandra.apache.org/doc/5.0/cassandra/architecture/streaming.html

web.archive.org

https://www.instaclustr.com/blog/cassandra_latest-yaml/

instaclustr.com

https://github.com/apache/cassandra/blob/trunk/conf/cassandra_latest.yaml

github.com

https://lists.apache.org/thread/otdq082ol1x1cylvgnj81or20532mwfb

lists.apache.org

https://issues.apache.org/jira/browse/CASSANDRA-16315

issues.apache.org

https://issues.apache.org/jira/browse/CASSANDRA-7139

issues.apache.org

https://issues.apache.org/jira/browse/CASSANDRA-20692

issues.apache.org

https://thelastpickle.com/blog/2020/06/29/cassandra_4-0_garbage_collectors_performance_benchmarks.html

thelastpickle.com

https://docs.datastax.com/en/cassandra-oss/3.0/cassandra/operations/opsTuneJVM.html

docs.datastax.com

https://github.com/fee-mendes/scylladb-c5/blob/main/cassandra/scaling/pagecache_scaling/step1-add_3_nodes_20250713142205_rate56000/stdout

github.com

https://github.com/fee-mendes/scylladb-c5/blob/main/cassandra/scaling/pagecache_scaling/step2-add_3_nodes_20250713154910_rate112000/stdout

github.com

https://github.com/fee-mendes/scylladb-c5/blob/main/cassandra/scaling/cache_scaling/step1-add_3_nodes_20250713205746_rate56000/stdout

github.com

https://github.com/fee-mendes/scylladb-c5/blob/main/cassandra/scaling/cache_scaling/step2-add_3_nodes_20250713220743_rate112000/stdout

github.com

https://www.scylladb.com/wp-content/uploads/apache-cassandra-tuning2.png

scylladb.com

https://docs.datastax.com/en/cassandra-oss/3.0/cassandra/operations/opsConfiguringCaches.html

docs.datastax.com

https://www.brendangregg.com/blog/2021-09-26/the-speed-of-time.html

brendangregg.com

https://databasetorque.com/jemalloc-and-cassandra/

databasetorque.com

https://docs.kernel.org/core-api/irq/irq-affinity.html

docs.kernel.org

https://man7.org/linux/man-pages/man1/taskset.1.html

man7.org

TL;DR: Cassandra Java Huge Pages Read at the source ↗

tobert.github.io

https://netflixtechblog.com/bending-pause-times-to-your-will-with-generational-zgc-256629c9386b

netflixtechblog.com

https://lp.scylladb.com/book-strategy-session-offer

lp.scylladb.com