High-performing Vagrant settings

Vagrantfile

# Note: If you're serving files via shared folders, for christs sake use NFS
#   but that does require private networking.
#
# The DNS settings were the ones that made the most difference, so if you're resource
#   constrained, the last two settings were the ones that helped the most.

config.vm.provider :virtualbox do |vb|
  vb.customize ["modifyvm", :id, "--memory", "1024"]
  vb.customize ["modifyvm", :id, "--cpuexecutioncap", "90"]
  vb.customize ["modifyvm", :id, "--cpus", 2]
  vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
  vb.customize ["modifyvm", :id, "--natdnsproxy1", "on"]
end