Hi all, we have upgraded a bunch of servers from Wheezy to Buster and experiencing a excessive usage of Swap after the upgrades on all systems. We have done some testing on this: Swap usage with stock Buster Linux 4.19: highSwap usage with Buster backports Linux 5.3: highSwap usage with self-compiled Linux 4.19: highSwap usage with self-compiled Linux 5.4: high Swap usage with self-compiled Linux 4.4: zero/low Example server with self-compiled 5.4: root@server: ~ # free -m total used free shared buff/cache availableMem: 24058 4657 448 4625 18952 14383Swap: 1905 678 122 The Swap usage was zero to low with the same load on Wheezy. Swappiness is configured with 0 on all systems. Linux memory management is to much voodoo for us, especially after reading a lot about Linux memory management in the past days. Any help is welcome - thanks and bye- OG
