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domgetter/timing.clj

Created December 14, 2015 17:12
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timing.clj
;; Timings are after the JVM had done all possible optimizations
(defn asdf [a b] (+ a b))
(dotimes [x 1000] (time (dotimes [x 1000000] (+ 2 3)))) ;; "Elapsed time: 0.280724 msecs"
(dotimes [x 1000] (time (dotimes [x 1000000] (asdf 2 3)))) ;; "Elapsed time: 1.114747 msecs"
(defn asdf ^long [^long a ^long b] (+ a b))
(dotimes [x 1000] (time (dotimes [x 1000000] (+ 2 3)))) ;; "Elapsed time: 0.280724 msecs"
(dotimes [x 1000] (time (dotimes [x 1000000] (asdf 2 3)))) ;; "Elapsed time: 0.57473 msecs"
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