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.

  • InvertedParallax@lemm.eeEnglish
    5·
    10 hours ago

    It pushes stuff when they’re really really cold, so for instance init services and libs that have basically never been touched since boot but still technically need to be in memory.

    They might have been pushed out because the page cache thought it had something more interesting, or if you have VMs, because the system wanted to make some huge pages.