Isn't zswap enabled by default?
having zram + swap on disk isn't the same as having zswap + swap on disk? the difference should be only that zram show as a swap device while zswap does not.
having only zram, you are still confined by the total ram you have. idk how the average compression ratio is, but you can gain 1.5x ram max. to get more, you need a physical swap device.
is there an advantage of using zram instead of zwap? when you still have a physical swap with lower priority.
bonus question: What if I use all 3 of them? would this just be redundant?
i have 8gb on my server, and i need stuff like zram / zwap to keep all the services running. still swaps out ~10gb. but it is on ssd and is fast enough.