But then you're putting data that used to be on RAM on storage, in order to keep...

		fluoridation 62 days ago \| parent \| context \| favorite \| on: Origin of the rule that swap size should be 2x of ... But then you're putting data that used to be on RAM on storage, in order to keep copies of stored data on RAM. Without any advance knowledge of access patterns, it doesn't seem like it buys you anything.