Ja, ezt meg a google összefoglaló írta amikor rákerestem a swap tömörítésre:
FreeBSD utilizes swap compression, particularly in scenarios with limited RAM, to enhance system performance and prevent memory exhaustion. This is achieved through features like compressed swap (zRAM) or by enabling compression on ZFS datasets. By compressing data before swapping it to disk, FreeBSD can store more data in the same swap space, reducing the need for physical RAM and potentially improving overall system responsiveness.
A ZFS-es módszerhez meg tudjuk is, hogy minden megvan, mert alapból tudja a tömörítést.