There are other methods you can use to increase performance under memory pressure, but you'd end up handling i/o directly and maintaining your own index of memo

There are other methods you can use to increase performance under memory pressure, but you'd end up handling i/o directly and maintaining your own index of memory and disk accesses, page-aligned reads/writes, etc. It would be easier to just require your users buy more memory, but when there's a hack like this available, that seems preferable to implementing your own VMM and disk i/o subsystem.