I do appreciate any ideas at this point. First of all, let me say that I was not aware this setting existed. After reading up on it
a bit, I'm pretty sure I understand what it does.
So, if I understand it correctly, I'm not sure how it could have an effect in my situation, where the swap size gradually and persistently grows over time:
Again, if I understand it correctly, increasing this value should increase swap usage (with the same memory usage), while decreasing it should decrease swap usage. However, by my understanding, this setting should not affect the growth of swap over time.
But, as I said at the beginning, I do appreciate every idea, so I'm going to set it to 10 and report back in a couple of days, when I see if it will have had any effect.