[scott_s]

Disabling swap means setting swappiness to 0; I'm not sure how you can talk about "disabling swap" without talking about swappiness.

[edwintorok]

Because that depends on the kernel version, I took the more reliable approach of using 'swapoff -a' (or in fact not defining any swap in my /etc/fstab). https://news.ycombinator.com/item?id=7940387 https://news.ycombinator.com/item?id=7940136

[scott_s]

Which then means that you're not allowing the kernel to make such decisions as what I described. (Rarely used pages paged out to allow for more disk cache.)