On a 5 year old i5-8600, with Samsung PM871b SSD:

  $ time julia -e "exit"
  real    0m0.156s
  user    0m0.096s
  sys     0m0.100s

  $ time julia -e "using Plots"
  real    0m1.219s
  user    0m0.981s
  sys     0m0.408s

  $ time julia -e "using Plots; display(plot(rand(10)))"
  real    0m1.581s
  user    0m1.160s
  sys     0m0.400s

Not a super fair test since everything was already hot in i/o cache, but still shows how much things have improved.