I used zram + swap for years. I dedicated 25% of my memory to zram. The problem is that zram would get filled with infrequently used data, and disk swap would get the frequently used data. Once that happens everything slows down.

Zswap tries to fix that be creating a compressed swap buffer in memory. Older/less used data will get written to disk, but fresh/frequently used data will stay in the compressed ram buffer. That’s my understanding, at least. I don’t remember how to query Zswap usage stats.

It’s a compressed ram disk (virtual block device) that is often used for swap.

Who knows what Putin told them to get them to visit him? “All is forgiven & I want you to run the ministry of defense”.

The Kremlin has been paying for Wagner from the beginning. Wagner has always belonged to Putin. It’s mercenary status has just been a mechanism of plausible deniability.