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denoland-deno/cli/bench/deno_common.js

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// v8 builtin that's close to the upper bound non-NOPs
Deno.bench("date_now", { n: 5e5 }, () => {
Date.now();
});
function addJS(a, b) {
return a + b;
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}
Deno.bench("add_js", () => addJS(1, 2));
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// A very lightweight op, that should be highly optimizable
Deno.bench("perf_now", { n: 5e5 }, () => {
performance.now();
});
Deno.bench("open_file_sync", () => {
using _file = Deno.openSync("./cli/bench/testdata/128k.bin");
});
// A common "language feature", that should be fast
// also a decent representation of a non-trivial JSON-op
{
let i = 0;
Deno.bench("url_parse", { n: 5e4 }, () => {
new URL(`http://www.google.com/${i}`);
i++;
});
}
Deno.bench("blob_text_large", { n: 100 }, () => {
new Blob([input]).text();
});
const input = "long-string".repeat(99999);
Deno.bench("b64_rt_long", { n: 100 }, () => {
atob(btoa(input));
});
Deno.bench("b64_rt_short", { n: 1e6 }, () => {
atob(btoa("123"));
});
{
const buf = new Uint8Array(100);
const file = Deno.openSync("/dev/zero");
Deno.bench("read_zero", { n: 5e5 }, () => {
file.readSync(buf);
});
}
{
// 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 });
Deno.bench("write_null", { n: 5e5 }, () => {
file.writeSync(dataChunk);
});
}
Deno.bench(
"read_128k",
{ n: 5e4 },
() => Deno.readFile("./cli/bench/testdata/128k.bin"),
);
Deno.bench("request_new", { n: 5e5 }, () => new Request("https://deno.land"));