I usually recommend following document: https://docs.datastax.com/en/dse/5.1/dse-dev/datastax_enterprise/config/configRecommendedSettings.html - it's about DSE, but applicable to OSS Cassandra as well...
Kunal at "Thu, 16 Apr 2020 15:49:35 -0700" wrote: K> Hello, K> K> I need some suggestion from you all. I am new to Cassandra and was reading Cassandra best practices. On one document, it was K> mentioned that Cassandra should not be using swap, it degrades the performance. K> My question is instead of disabling swap system wide, can we force Cassandra not to use swap? Some documentation suggests to use K> memory_locking_policy in cassandra.yaml. K> How do I check if our Cassandra already has this parameter and still uses swap ? Is there any way i can check this. I already K> checked cassandra.yaml and dont see this parameter. Is there any other place i can check and confirm? K> Also, Can I set memlock parameter to unlimited (64kB default), so entire Heap (Xms = Xmx) can be locked at node startup ? Will that K> help? K> Or if you have any other suggestions, please let me know. K> K> K> Regards, K> Kunal K> -- With best wishes, Alex Ott Principal Architect, DataStax http://datastax.com/ --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
