评论由：mfikes making
`
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
使用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
使用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
使用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
使用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
使用ChakraCore进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，55毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，76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，129毫秒
之后
使用V8进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，52毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，64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，63毫秒
使用SpiderMonkey进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，83毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，62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，95毫秒
使用JavaScriptCore进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，31毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，26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，34毫秒
使用Nashorn进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，970毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，769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，518毫秒
使用ChakraCore进行基准测试
[obj (js-obj "a" 1 "b" 2)], (pr-str obj), 1000次运行，37毫秒
[obj (js-obj "a" 1 "b" 2 "c" 3 "d" 4 "e" 5 "f" 6)], (pr-str obj), 1000次运行，43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，73毫秒
`
