评论由：mfikes发表
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加速摘要
Engine small, medium, with sub-object
V8: 1.42, 1.31, 1.19
SpiderMonkey: 1.14, 1.48, 1.41
JavaScriptCore: 1.48, 1.58, 1.62
Nashorn: 1.27, 1.36, 1.20
ChakraCore: 1.49, 1.77, 1.77
之前
与V8进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，74毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，84毫秒
[sub-obj (js-obj "g" 7 "h" 8 "i" 9 "j" 10) obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6 "s" sub-obj)], (pr-str obj), 1000次运行，75毫秒
与SpiderMonkey进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，95毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，92毫秒
[sub-obj (js-obj "g" 7 "h" 8 "i" 9 "j" 10) obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6 "s" sub-obj)], (pr-str obj), 1000次运行，134毫秒
与JavaScriptCore进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，46毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，41毫秒
[sub-obj (js-obj "g" 7 "h" 8 "i" 9 "j" 10) obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6 "s" sub-obj)], (pr-str obj), 1000次运行，55毫秒
与Nashorn进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，1228毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，1048毫秒
[sub-obj (js-obj "g" 7 "h" 8 "i" 9 "j" 10) obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6 "s" sub-obj)], (pr-str obj), 1000次运行，620毫秒
与ChakraCore进行基准测试
对象(obj) [{"a": 1, "b": 2}], (pr-str obj), 1000次运行，55毫秒
对象(obj) [{"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6}], (pr-str obj), 1000次运行，76毫秒
子对象(sub-obj) [{"g": 7, "h": 8, "i": 9, "j": 10}, obj, {"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6, "s": sub-obj}], (pr-str obj), 1000次运行，129毫秒
之后
与V8进行基准测试
对象(obj) [{"a": 1, "b": 2}], (pr-str obj), 1000次运行，52毫秒
对象(obj) [{"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6}], (pr-str obj), 1000次运行，64毫秒
子对象(sub-obj) [{"g": 7, "h": 8, "i": 9, "j": 10}, obj, {"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6, "s": sub-obj}], (pr-str obj), 1000次运行，63毫秒
与SpiderMonkey进行基准测试
对象(obj) [{"a": 1, "b": 2}], (pr-str obj), 1000次运行，83毫秒
对象(obj) [{"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6}], (pr-str obj), 1000次运行，62毫秒
子对象(sub-obj) [{"g": 7, "h": 8, "i": 9, "j": 10}, obj, {"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6, "s": sub-obj}], (pr-str obj), 1000次运行，95毫秒
与JavaScriptCore进行基准测试
对象(obj) [{"a": 1, "b": 2}], (pr-str obj), 1000次运行，31毫秒
对象(obj) [{"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6}], (pr-str obj), 1000次运行，26毫秒
子对象(sub-obj) [{"g": 7, "h": 8, "i": 9, "j": 10}, obj, {"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6, "s": sub-obj}], (pr-str obj), 1000次运行，34毫秒
与Nashorn进行基准测试
对象(obj) [{"a": 1, "b": 2}], (pr-str obj), 1000次运行，970毫秒
对象(obj) [{"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6}], (pr-str obj), 1000次运行，769毫秒
子对象(sub-obj) [{"g": 7, "h": 8, "i": 9, "j": 10}, obj, {"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6, "s": sub-obj}], (pr-str obj), 1000次运行，518毫秒
与ChakraCore进行基准测试
对象(obj) [{"a": 1, "b": 2}], (pr-str obj), 1000次运行，37毫秒
对象(obj) [{"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6}], (pr-str obj), 1000次运行，43毫秒
子对象(sub-obj) [{"g": 7, "h": 8, "i": 9, "j": 10}, obj, {"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6, "s": sub-obj}], (pr-str obj), 1000次运行，73毫秒
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