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Change swappiness at runtime

caution rootSystem and hardwaredebian, ubuntu

Caution: This command changes the system. Understand what it does before you run it.

Adjust the values, the command updates live
root@server
sysctl vm.swappiness=10

Changes how early the kernel moves memory pages to swap. On database and web servers with enough RAM, a value around 10 is common, so active data stays in memory longer. The change takes effect immediately and can be reverted at any time.

Note: To make the value permanent, create a file like /etc/sysctl.d/99-swappiness.conf containing vm.swappiness=10 and load it with sysctl --system.

Also searched as

  • reduce swappiness
  • server swaps too early
  • set vm.swappiness

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