Suitable for machines with low memory and slow disk speed
The speed increase is very noticeable in practice, much better than pure disk swap performance
apt install zram-tools
zramswap stop
nano /etc/default/zramswap
Modify and remove the # at the beginning of the line
ALGO=zstd
PERCENT=50
PRIORITY=100
zramswap start
The configuration of zram is now complete
It enables a high compression ratio for half of the memory, significantly faster than pure disk swap