What can I do about mem swap size

[Dentonknifeworks]

Can I adjust the swap size?

[aaronwmorris]

You should decrease your kernel swappiness to 1 like in https://github.com/aaronwmorris/indi-allsky/wiki/Memory-Optimizations

echo "vm.swappiness = 1" | sudo tee /etc/sysctl.d/90-swappiness.conf

sudo sysctl --system

You can clear swap an raspi (without rebooting) by doing the following:

sudo dphys-swapfile swapoff

sudo dphys-swapfile swapon

Setting swappiness to 1 just sets a preference to decreasing file cache to free memory instead of swapping pages to disk.