This answer says that zswap decompresses pages before writing them to non-RAM swap.

Is there any way to compress the pages written to disk, ideally with lz4?

I hope to:

  • Reduce SSD write wear
  • Reduce swap disk allocation
  • Speed up swap IO (hopefully fewer blocks are written/read to/from disk)

The only solution I've found is not using a dedicated swap partition and storing the swapfile in a zfs partition.

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