rubytimer

How to time an operation in milliseconds in Ruby?

I'm wishing to figure out how many milliseconds a particular function uses. So I looked high and low, but could not find a way to get the time in Ruby with millisecond precision.

How do you do this? In most programming languages its just something like

start = now.milliseconds
myfunction()
end = now.milliseconds
time = end - start
Solution

  • You can use ruby's Time class. For example:

    t1 = Time.now
# processing...
t2 = Time.now
delta = t2 - t1 # in seconds

    Now, delta is a float object and you can get as fine grain a result as the class will provide.