sys.clock() | LuaRT free and open source Windows programming framework for Lua

sys.clock()

Returns the current elapsed time, that can be used for time-interval measurements.

Return value

This function returns the current elapsed time in millisecond. Lua^rt uses a high performance counter if available, or the current elapsed time since the system has started otherwise.

Example


function benchmark(name, func, ...)
	local start = sys.clock()
	func(...)
	local finish = sys.clock()
	print(name.." benchmark : "..tostring(finish-start).."ms")
end

function fibonacci(n)
  local a, b = 0, 1
  for i = 1, n do
    a, b = b, a + b
  end
  return a
end

benchmark("fibonacci", fibonacci, 5000000)