#!/usr/bin/ruby
# Check how much sleep accuracy we have.
#
# On linux, we can attempt a millisecond sleep and actually get pretty close.
# Even jslinux manages to give us about ~11ms.
# On windows, it seems like the best we can do is ~15ms.

[0.5, 0.2, 0.1,
 0.05, 0.02, 0.01,
 0.005, 0.002, 0.001,
 0.0005, 0.0002, 0.0001].each{|interval|
   t0 = Time::now
   20.times{ sleep interval }
   t1 = Time::now
   print "Desired = #{interval}, actual = #{(t1 - t0) / 20.0}\n"
}