P2Pool-main: 8.2 MB saved P2Pool-mini: 66 MB saved P2Pool-nano: 25.2 MB saved The feature is available only when building from source and is intended for use on low-memory systems (for example, a VPS server with < 1 GB RAM). It only makes sense to use with `--no-cache --no-randomx` in the command line because cache and RandomX hasher take much more memory.