This is an old desktop I use for some small self hosting services. I never use all my RAM and I don't see any RAM spikes other than when I install/compile things which I haven't done in months. I restarted the machine a couple of times, but the SWAP will eventually go right back up to 100%.
I have an Ubuntu server/yunohost setup and found: https://askubuntu.com/questions/157793/why-is-swap-being-used-even-though-i-have-plenty-of-free-ram
My cat /proc/sys/vm/swappiness value is indeed 60. Im not sure what would reduce the SWAP space usage.
Would changing this swappiness value help? Anyone come across this issue before?
EDIT: Found out what it is, its the matrix server that is running on the system. Its taking up a significant amount of swap. Found out via:
smem -s swap -r -p
turning that off, the system is now using 90% less SWAP.
/opt/yunohost/matrix-synaps was the process.
1gb swap is way too small...
I usually setup swap to be 2x the total ram size. So, 32gb swap in your case.
Nothing wrong here, seems normal. With such little swap.
Actually Linux kernel works better with swap, the more the better. It will lalso perform better than zero swap. Counterintuitive indeed, but that's how it works.
If you don't want swap, use zram.
+1 for
zramswap, especially if you're tight on RAM but have a few CPU cycles to spare.