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by dekhn 752 days ago
As a workaround, you can mlock your process which should prevent the application pages from being evicted by swap.
1 comments
jbellis 752 days ago
FWIW this is what Cassandra does on startup, but it didn't seem worth it to go to the trouble of dealing with Unsafe for a demo project.
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nextaccountic 752 days ago
Can't mlock be wrapped out in a safe API?
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jbellis 752 days ago
Probably, but I'm not aware of any Java library that provides that functionality.
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papercrane 752 days ago
If you don't mind using a preview feature you should be able to use the foreign function API to call mlockall without any unsafe code.

Otherwise, JNA is probably the easiest way, and how Cassandra does it.

https://docs.oracle.com/en/java/javase/21/core/calling-c-lib...

https://github.com/java-native-access/jna

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