code-server/packages/requirefs/test/requirefs.bench.ts

49 lines
1.6 KiB
TypeScript
Raw Normal View History

2019-01-08 08:46:19 +08:00
import * as benchmark from "benchmark";
import { performance } from "perf_hooks";
import { TestCaseArray, isMac } from "./requirefs.util";
const files = [
"./individual.js", "./chained-1", "./subfolder",
"./subfolder/goingUp", "./nodeResolve",
];
const toBench = new TestCaseArray();
// Limits the amount of time taken for each test,
// but increases uncertainty.
benchmark.options.maxTime = 0.5;
let suite = new benchmark.Suite();
let _start = 0;
const addMany = (names: string[]): benchmark.Suite => {
for (let name of names) {
for (let file of files) {
suite = suite.add(`${name} -> ${file}`, async () => {
let rfs = await toBench.byName(name).rfs;
rfs.require(file);
});
}
}
_start = performance.now();
return suite;
}
// Returns mean time per operation, in microseconds (10^-6s).
const mean = (c: any): number => {
return Number((c.stats.mean * 10e+5).toFixed(5));
};
// Swap out the tar command for gtar, when on MacOS.
let testNames = ["zip", "bsdtar", isMac ? "gtar" : "tar"];
addMany(testNames).on("cycle", (event: benchmark.Event) => {
console.log(String(event.target) + ` (~${mean(event.target)} μs/op)`);
}).on("complete", () => {
const slowest = suite.filter("slowest").shift();
const fastest = suite.filter("fastest").shift();
console.log(`===\nFastest is ${fastest.name} with ~${mean(fastest)} μs/op`);
if (slowest.name !== fastest.name) {
console.log(`Slowest is ${slowest.name} with ~${mean(slowest)} μs/op`);
}
const d = ((performance.now() - _start)/1000).toFixed(2);
console.log(`Benchmark took ${d} s`);
})
.run({ "async": true });