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53 lines
1.2 KiB
JavaScript
53 lines
1.2 KiB
JavaScript
// Run with: deno run -A ./cli/bench/deno_common.js
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function benchSync(name, n, innerLoop) {
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const t1 = Date.now();
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for (let i = 0; i < n; i++) {
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innerLoop(i);
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}
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const t2 = Date.now();
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const dt = (t2 - t1) / 1e3;
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const r = n / dt;
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console.log(
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`${name}:${" ".repeat(20 - name.length)}\t` +
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`n = ${n}, dt = ${dt.toFixed(3)}s, r = ${r.toFixed(0)}/s`,
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);
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}
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function benchUrlParse() {
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benchSync("url_parse", 5e4, (i) => {
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new URL(`http://www.google.com/${i}`);
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});
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}
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function benchNow() {
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benchSync("now", 5e5, () => {
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performance.now();
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});
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}
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function benchWriteNull() {
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// Not too large since we want to measure op-overhead not sys IO
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const dataChunk = new Uint8Array(100);
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const file = Deno.openSync("/dev/null", { write: true });
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benchSync("write_null", 5e5, () => {
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Deno.writeSync(file.rid, dataChunk);
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});
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Deno.close(file.rid);
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}
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function benchReadZero() {
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const buf = new Uint8Array(100);
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const file = Deno.openSync("/dev/zero");
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benchSync("read_zero", 5e5, () => {
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Deno.readSync(file.rid, buf);
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});
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Deno.close(file.rid);
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}
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function main() {
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benchUrlParse();
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benchNow();
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benchWriteNull();
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benchReadZero();
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}
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main();
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