Swap is controlled by OS and will use it when running short of memory. I don’t think you can disable at Cassandra level
Regards, Nitan Cell: 510 449 9629 > On Apr 16, 2020, at 5:50 PM, Kunal <kunal.v...@gmail.com> wrote: > > > Hello, > > I need some suggestion from you all. I am new to Cassandra and was reading > Cassandra best practices. On one document, it was mentioned that Cassandra > should not be using swap, it degrades the performance. > My question is instead of disabling swap system wide, can we force Cassandra > not to use swap? Some documentation suggests to use memory_locking_policy in > cassandra.yaml. > > 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 checked cassandra.yaml > and dont see this parameter. Is there any other place i can check and confirm? > > Also, Can I set memlock parameter to unlimited (64kB default), so entire Heap > (Xms = Xmx) can be locked at node startup ? Will that help? > > Or if you have any other suggestions, please let me know. > > > Regards, > Kunal >
