Linux for PC from 2007: 37 browser tabs+Discord+Skype with no lag on 2 GB RAM

TL;DR:

1. Linux sucks when the memory usage come close to RAM amount, making system barely usable even on modern PCs (here's the report of system freeze with 32 GB RAM[1]). Luckily, the "le9" patch helps with thrashing condition a lot, either aiding in proper swap process or by early killing the offending process with kernel OOM killer.

2. zram memory compression is very effective and fast, even on 13-year-old PC with far from fastest CPU.

[1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/...