On 8/8/25 10:21, Frits Hoogland wrote:
> If swappiness is set to 0, but swap is available, some documentation
> suggests it will never use anonymous memory, however I found this not to
> be true, linux might still choose anonymous memory to reclaim.
A bug in RHEL8 meant that swappiness was not taken into account unless
cgroupv2 was configured or vm.force_cgroup_v2_swappiness was set to 1.
See references [1] and [2]. Could this be the cause of your observation?
[1] https://access.redhat.com/solutions/6785021
[2] https://github.com/systemd/systemd/issues/9276
