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    • Oracle Linux Inconsistent swappiness value with cgroup "memory.swappiness"

    edited Feb 14, 2024 5:52AM in Linux

    APPLIES TO:

    Linux OS – Version Oracle Linux 8

    Linux x86_64


    SYMPTOMS:

    OL8 instance swap upto 2GB even though the kernel parameter "vm.swappiness " is set to 1.

    NOTE – vm.swappiness value in this example was set to 1 but it can be set to 0,10,60(default) or 100

    * 0: swap is disable

    * 1: minimum amount of swapping without disabling it entirely

    * 10: recommended value to improve performance when sufficient memory exists in a system

    * 60: Default swappiness value

    * 100: aggressive swapping

    $sudo sysctl -a | grep swappiness
vm.swappiness = 1


    $sudo cd /sys/fs/cgroup/memory/ && grep . **/memory.swappiness
init.scope/memory.swappiness:60
machine.slice/memory.swappiness:60
oca.slice/memory.swappiness:60
system.slice/memory.swappiness:60
user.slice/memory.swappiness:60
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