1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
// Run with: deno run -A ./cli/bench/deno_common.js
function benchSync(name, n, innerLoop) {
const t1 = Date.now();
for (let i = 0; i < n; i++) {
innerLoop(i);
}
const t2 = Date.now();
console.log(benchStats(name, n, t1, t2));
}
async function benchAsync(name, n, innerLoop) {
const t1 = Date.now();
for (let i = 0; i < n; i++) {
await innerLoop(i);
}
const t2 = Date.now();
console.log(benchStats(name, n, t1, t2));
}
// Parallel version benchAsync
async function benchAsyncP(name, n, p, innerLoop) {
const range = new Array(p).fill(null);
const t1 = Date.now();
for (let i = 0; i < n / p; i++) {
await Promise.all(range.map(() => innerLoop()));
}
const t2 = Date.now();
console.log(benchStats(name, n, t1, t2));
}
function benchStats(name, n, t1, t2) {
const dt = (t2 - t1) / 1e3;
const r = n / dt;
const ns = Math.floor(dt / n * 1e9);
return `${name}:${" ".repeat(20 - name.length)}\t` +
`n = ${n}, dt = ${dt.toFixed(3)}s, r = ${r.toFixed(0)}/s, t = ${ns}ns/op`;
}
function benchB64RtLong() {
const input = "long-string".repeat(99999);
benchSync("b64_rt_long", 1e2, () => {
atob(btoa(input));
});
}
function benchB64RtShort() {
benchSync("b64_rt_short", 1e6, () => {
atob(btoa("123"));
});
}
function benchUrlParse() {
benchSync("url_parse", 5e4, (i) => {
new URL(`http://www.google.com/${i}`);
});
}
function benchLargeBlobText() {
const input = "long-string".repeat(999_999);
benchSync("blob_text_large", 3, () => {
new Blob([input]).text();
});
}
function benchDateNow() {
benchSync("date_now", 5e5, () => {
Date.now();
});
}
function benchPerfNow() {
benchSync("perf_now", 5e5, () => {
performance.now();
});
}
function benchWriteNull() {
// Not too large since we want to measure op-overhead not sys IO
const dataChunk = new Uint8Array(100);
const file = Deno.openSync("/dev/null", { write: true });
benchSync("write_null", 5e5, () => {
Deno.writeSync(file.rid, dataChunk);
});
Deno.close(file.rid);
}
function benchReadZero() {
const buf = new Uint8Array(100);
const file = Deno.openSync("/dev/zero");
benchSync("read_zero", 5e5, () => {
Deno.readSync(file.rid, buf);
});
Deno.close(file.rid);
}
function benchRead128k() {
return benchAsync(
"read_128k",
5e4,
() => Deno.readFile("./cli/bench/testdata/128k.bin"),
);
}
function benchRequestNew() {
return benchSync("request_new", 5e5, () => new Request("https://deno.land"));
}
function benchOpVoidSync() {
return benchSync("op_void_sync", 1e7, () => Deno.core.opSync("op_void_sync"));
}
function benchOpVoidAsync() {
return benchAsyncP(
"op_void_async",
1e6,
1e3,
() => Deno.core.opAsync("op_void_async"),
);
}
async function main() {
// v8 builtin that's close to the upper bound non-NOPs
benchDateNow();
// Void ops measure op-overhead
benchOpVoidSync();
await benchOpVoidAsync();
// A very lightweight op, that should be highly optimizable
benchPerfNow();
// A common "language feature", that should be fast
// also a decent representation of a non-trivial JSON-op
benchUrlParse();
benchLargeBlobText();
benchB64RtLong();
benchB64RtShort();
// IO ops
benchReadZero();
benchWriteNull();
await benchRead128k();
benchRequestNew();
}
await main();
|
