I think the question is: if a person is going to make such a tiny swap, why even use swap?
Such a small swap is unlikely to save a system from memory problems and it’s does not seem likely to make a noticeable difference in performance when it’s only able to swap out small amounts of memory.
Why wouldn’t one just put in larger ZRAM or a larger Swap with a reduced swapiness?
If I have a raspberry pi with 1 GB ram, I don’t think a 2 MB swap is worth bothering with.
I wouldn’t put swap on an SD card, no. Even if it had an NVME, it seems like putting up at least a double-digit percent would be more effective than 1%.
Also, since 6.1, swap has been a lot better, with MGLRU. ChromeOS gets away with paltry amounts of RAM due to swapping. So classic overcommitting seems fine as long as you don’t run into situations where more RAM is active at once than is available by hardware.
Me watching my kernel shove 16gb worth of in use virtual memory into zswap in a desperate attempt to run 20 heavy applications on 8gb of physical memory