Say you have a KVM VPS where a 32-bit non-PAE kernel can address all the memory (that is, it has less than ~3 GB RAM). Would you use a 64-bit OS, or would you stick to 32-bit? Does 64-bit still have advantages in that case?
I know in the past, 32-bit has been recommended for low-RAM servers (due to the smaller pointer size resulting in less RAM usage, at least in theory). I stuck to 32-bit on a server with 512 MB for that reason. However, I’m not sure if that recommendation is still accurate. On the flip side to that, since the host machine is 64-bit, is it beneficial if all guests are also 64-bit?