node vs deno vs qjs vs bun运行速度简单比较

闲聊灌水
1

简单计算性能对比： bun的性能有点夸张啊。。。

gxy@x1c:~/tmp/bun$ time node test.js
avg= 8.914138680538031e-7

real	1m14.575s
user	1m41.410s
sys	0m3.574s
gxy@x1c:~/tmp/bun$ time qjs test.js
avg= 9.886412477566608e-7

real	0m35.836s
user	0m35.170s
sys	0m0.360s
gxy@x1c:~/tmp/bun$ time deno run test.js
avg= 9.817291988234444e-7

real	0m49.849s
user	0m50.780s
sys	0m1.614s
gxy@x1c:~/tmp/bun$ time bun test.js
avg= 0.3678743069661792

real	0m10.866s
user	0m13.523s
sys	0m0.583s
gxy@x1c:~/tmp/bun$ 

gxy@x1c:~/tmp/bun$ deno --version
deno 1.32.4 (release, x86_64-unknown-linux-gnu)
v8 11.2.214.9
typescript 5.0.3
gxy@x1c:~/tmp/bun$ bun --version
0.5.9
gxy@x1c:~/tmp/bun$ node -v
v10.24.1

源代码：

var avg = 0;
var list = [];
for (var i = 0; i < 10000000; i++) {
    var n = Math.random();
    list.push(n);
}
list.sort();
var i = 0;
list.forEach(function (e) {
    avg = (avg * i + e) / (i + 1);
});
console.log("avg=", avg);
2

又跑了一下斐波那契数。

gxy@x1c:~/tmp/bun$ time deno run fibonacci.js 
0.  44 :  1134903170
0.  44 :  1134903170
0.  44 :  1134903170
0ms 0ms 8915ms

real	0m8.945s
user	0m8.906s
sys	0m0.007s
gxy@x1c:~/tmp/bun$ time qjs fibonacci.js 
0.  44 :  1134903170
0.  44 :  1134903170
0.  44 :  1134903170
0ms 0ms 100704ms

real	1m40.708s
user	1m40.098s
sys	0m0.043s
gxy@x1c:~/tmp/bun$ time node  fibonacci.js 
0.  44 :  1134903170
0.  44 :  1134903170
0.  44 :  1134903170
1ms 1ms 8037ms

real	0m8.115s
user	0m8.071s
sys	0m0.014s
gxy@x1c:~/tmp/bun$ time bun  fibonacci.js 
0.  44 :  1134903170
0.  44 :  1134903170
0.  44 :  1134903170
1ms 0ms 5924ms

real	0m5.938s
user	0m5.918s
sys	0m0.010s

代码：

// usage:
// $ time ./fibonacci.js 40
// 0.  40 :  165580141
// 0.  40 :  165580141
// 5ms 3259ms
//
// real     0m3.310s
// user     0m3.301s
// system   0m0.017s

//fibonacci(40)
//fibonacci2(40)

function fibonacci(n) {
  var res;
  if (fibonacci.stack[n]) return fibonacci.stack[n];
  if (n < 2)
    res = 1;
  else
    res = fibonacci(n - 2) + fibonacci(n - 1);

  return (fibonacci.stack[n] = res);
}
fibonacci.stack = {};

function fibonacci2(n) {
  if (n < 2) return 1;
  return fibonacci2(n - 2) + fibonacci2(n - 1);
}

function  fibonacci3(n) {
  n = n || 1;
  var t = 1, i = 1, n1 = 0, n2 = 1;
  for (; i <= n; i++) {
    t = n2 + n1;
    n1 = n2;
    n2 = i < 2 ? 1 : t;
  }
  return t;
}

var ns = [44] 

var s1 = Date.now();

ns.forEach(function (n, i) {
  console.log(i + '. ', n, ': ', fibonacci(n));
});

var s2 = Date.now();

var t1 = s2 - s1;

ns.forEach(function (n, i) {
  console.log(i + '. ', n, ': ', fibonacci3(n));
});

var s3 = Date.now();

var t2 = s3 - s2;

ns.forEach(function (n, i) {
  console.log(i + '. ', n, ': ', fibonacci2(n));
});

var s4 = Date.now();

var t3 = s4 - s3;

console.log(t1 + 'ms', t2 + 'ms', t3 + 'ms');
2 个赞
3

看来你还不知道 Bun 没有自己实现 JavaScript 解释器, 用的是 WebKit 的 JavaScriptCore :smile:

而 JavaScriptCore 热身速度比 V8 更快, 完全热身之后两边不见得谁更有优势

https://twitter.com/jarredsumner/status/1499225725492076544

3 个赞
4

v8的性能要比JavaScriptCore好很多很多。

5

热身指的是jit么？

6

启动速度，zsbd