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(ns immer-benchmark
(:require [criterium.core :as c]
[clojure.core.rrb-vector :as fv]))
(defn h0 [& args]
(apply println "\n####" args))
(defn h1 [& args]
(apply println "\n====" args))
(defn h2 [& args]
(apply println "\n----" args))
(defn run-benchmarks [N S]
(h0 "Running benchmarks: N =" N " S =" S)
(def c-steps 10)
(defn vector-push-f [v]
(loop [v v
i 0]
(if (< i N)
(recur (fv/catvec (fv/vector i) v)
(inc i))
v)))
(defn vector-push [v]
(loop [v v
i 0]
(if (< i N)
(recur (conj v i)
(inc i))
v)))
(defn vector-push! [v]
(loop [v (transient v)
i 0]
(if (< i N)
(recur (conj! v i)
(inc i))
(persistent! v))))
(defn vector-concat [v vc]
(loop [v v
i 0]
(if (< i c-steps)
(recur (fv/catvec v vc)
(inc i))
v)))
(defn vector-update [v]
(loop [v v
i 0]
(if (< i N)
(recur (assoc v i (+ i 1))
(inc i))
v)))
(defn vector-update-random [v]
(loop [v v
i 0]
(if (< i N)
(recur (assoc v (rand-int N) i)
(inc i))
v)))
(defn vector-update! [v]
(loop [v (transient v)
i 0]
(if (< i N)
(recur (assoc! v i (+ i 1))
(inc i))
(persistent! v))))
(defn vector-update-random! [v]
(loop [v (transient v)
i 0]
(if (< i N)
(recur (assoc! v (rand-int N) i)
(inc i))
(persistent! v))))
(defn vector-iter [v]
(reduce + 0 v))
(defn the-benchmarks [empty-v]
(def full-v (into empty-v (range N)))
(h2 "iter")
(c/bench (vector-iter full-v) :samples S)
(if (> N 100000)
(h2 "skipping updates 'cuz N > 100000 (would run out of mem)")
(do
(h2 "update!")
(c/bench (vector-update! full-v) :samples S)
(h2 "update-random!")
(c/bench (vector-update-random! full-v) :samples S)
(h2 "push!")
(c/bench (vector-push! empty-v) :samples S)
(h2 "update")
(c/bench (vector-update full-v) :samples S)
(h2 "update-random")
(c/bench (vector-update-random full-v) :samples S)
(h2 "push")
(c/bench (vector-push empty-v) :samples S))))
(defn the-rrb-benchmarks [empty-v]
(if (> N 1000)
(h2 "skipping relaxed test 'cuz N > 1000 (rrb-vector bug)")
(do
(def full-v (vector-push-f empty-v))
(h2 "iter/f")
(c/bench (vector-iter full-v) :samples S)
(h2 "update/f")
(c/bench (vector-update full-v) :samples S)
(h2 "update-random/f")
(c/bench (vector-update-random full-v) :samples S)))
(def short-v (into empty-v (range (/ N c-steps))))
(h2 "concat")
(c/bench (vector-concat empty-v short-v)) :samples S)
(h1 "vector")
(the-benchmarks (vector))
(h1 "rrb-vector")
(the-benchmarks (fv/vector))
(the-rrb-benchmarks (fv/vector)))
(defn -main []
(run-benchmarks 1000 100)
(run-benchmarks 100000 20)
(run-benchmarks 10000000 3))
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