Why is swappiness set to 133?

[tbg]

In the Garuda FAQ section there is an extended explanation/conversation regarding this topic:

[Outdated] VFS cache and Swappiness

Thanks, @dr460nf1r3 . I notice also in this changelog that swappiness has been altered to use ZRAM. I assume this explains the default setting of 133. I've got lots of RAM, but also an ingrained horror from the early days of SSDs of seeing unnecessary write actions to disk. This is going to take some getting used to. Does this mean I should avoid (or approach differently) some of the other associated tweaks, such as vfs_cache_pressure, etc?

[Outdated] VFS cache and Swappiness

You are right, it does indeed. We no longer ship vfs_cache_pressure, just vm.swappiness (in /usr/lib/sysctl.d/99-sysctl-garuda.conf). If you are concerned about your SWAP partition being used (if I understood correctly) - the ZRAM swap should have a higher priority and should therefore be used prior to utilizing the actual SSD swap space. You can check this with swapon -s.