I am struggling with large memory usage (fresh rebooted server) eats 6 GB of RAM memory total used free shared buff/cache available Mem: 31776 6363 23424 1 1988 25028 after shutting down services and killing processes (sudo sync; echo 3 > /proc/sys/vm/drop_caches; free -m showed still 6 GB in use…

sudo slabtop should provide some insight into the kernel allocator.

6Gb sounds a lot, but it looks like you have 32Gb. I have 16Gb and 3Gb being used, so it’s a similar ratio.

on other machines I don’t have problems with nonchache memory only with two with the same hardware, I still looking whi lernel uses noncache

Can you post output of sudo slabtop?

at this moment I have some jaa software running on machine smem -tkw Area Used Cache Noncache firmware/hardware 0 0 0 kernel image 0 0 0 kernel dynamic memory 15.1G 9.0G …

Did you ever figure out the reason for the large base memory usage (~5GB) on this process model. I couldn’t find anything useful in dmesg or slabtop to explain but it does seem extremely high to be that on a fresh boot.

unfortunately no solution, at this time I planed migration to non EPYC servers

Rocky Linux 8 6 GB memory in noncache used by kernel

Rocky Linux Help & Support

fkaluza October 28, 2024, 8:50am 7

I also got an reply from OVH support - in short AMD EPYC cpu causes kernel takes more ram

NFS mounts hang forever

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Rocky Linux 8 6 GB memory in noncache used by kernel

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