Update benchmark

Author: jwagner

package.json

@@ -8,8 +8,9 @@
 
   "devDependencies": {
     "buster": "~0.7.8",
-    "benchmark": "~1.0.0",
-    "microtime": "~0.3.1"
+    "buster": "~0.6.2",
+    "benchmark": "~2.1.0",
+    "microtime": "~2.0.0"
   },
   "bugs": {
       "url": "https://github.com/jwagner/simplex-noise.js/issues"

perf/benchmark.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+sudo cpufreq-set -g performance
+# use core 0 + 4 (which is hyperthreading for core 0)
+sudo nice -n -10 sudo -u $USER taskset -c 0,4 `which node` --random_seed=1 --hash_seed=1 --expose-gc benchmark.js
+sudo cpufreq-set -g powersave