Hi, So after, looking into OSDs memory usage, which seem to be fine, on a v16.2.13 running with cephadm, on el8, it seems that the kernel is using a lot of memory. # smem -t -w -k Area Used Cache Noncache firmware/hardware 0 0 0 kernel image 0 0 0 kernel dynamic memory 65.0G 18.6G 46.4G userspace memory 50.1G 260.5M 49.9G free memory 9.9G 9.9G 0 ---------------------------------------------------------- 125.0G 28.8G 96.3G Comparing with a similar other cluster, same OS, same ceph version, but running packages instead if containers, and machines have a little bit more memory: # smem -t -w -k Area Used Cache Noncache firmware/hardware 0 0 0 kernel image 0 0 0 kernel dynamic memory 52.8G 50.5G 2.4G userspace memory 123.9G 198.5M 123.7G free memory 10.6G 10.6G 0 ---------------------------------------------------------- 187.3G 61.3G 126.0G Does anyone have an idea why when using containers with podman the kernel needs a lot more memory? Luis Domingues Proton AG