Swap: Difference between revisions

[https://docs.kernel.org/admin-guide/sysctl/vm.html#swappiness Swappiness] controls how aggressibely swap space is used, specifically how to free up memory when needed. By default, Linux uses a swappiness value of 60. Higher values will make the kernel prefer swapping out idle processes over dropping caches. Conversely lower values will try to avoid swapping as much as possible, keeping processes in RAM unless absolutely necessary. An optimal value is workload dependent and will will require experimentation.