I have found that zswap behaves much better than zram when the size of the used ram approaches 150% of RAM. In theory zram compresses better as zswap has very s

I have found that zswap behaves much better than zram when the size of the used ram approaches 150% of RAM. In theory zram compresses better as zswap has very simple mapping for the location of its cache of compressed pages leading to space underutilization. But, as it has real backing store, it can evict unused pages allowing bigger chunk of uncompressed memory for running applications.