OpenWrt Minimum Busybox vCPU/vRAM Settings

Building a small virt lab on a small PC

  • Windows 10 Pro / 21H1
  • Core i5-5250U dual thread CPU @1.6GHz
  • 8 GB Ram
  • 2 Tb SSD

The unit is expandable to 16GB Ram but that's not happening any time soon.

I hope to give four OpenWrt instances minimum sufficient resources to work properly.
My thoughts: 128MB Ram (altogether .5GB) / .125% of once CPU (altogether .5 CPU)

Can this work?

128MB is sufficient for most purposes, but obviously it depends on what additional services you are running.