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208 lines (191 loc) · 5.12 KB
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import {
benchmarkCreateIndex,
benchmarkPopulate,
benchmarkReadTransaction,
benchmarkScan,
benchmarkSingleByteWrite,
benchmarkWriteReadRoundTrip,
} from './replicache.js';
import {benchmarkIDBRead, benchmarkIDBWrite} from './idb.js';
/**
* @typedef {{
* name: string;
* group: string;
* byteSize?: number;
* setup?: () => Promise<void> | void;
* teardown?: () => Promise<void> | void;
* run: (b: Bencher, i: number) => Promise<void> | void;
* }} Benchmark
*
* @typedef {{
* reset: () => void;
* stop: () => void;
* }} Bencher
*
* @typedef {"benchmarkJS"|"replicache"} OutputFormat
*/
/**
* @param {Benchmark} benchmark
* @param {OutputFormat} format
*/
async function runBenchmark(benchmark, format) {
// Execute fn at least this many runs.
const minRuns = 5;
// Execute fn at least for this long.
const minTime = 500;
/** @type number[] */
const times = [];
let sum = 0;
if (benchmark.setup) {
await benchmark.setup();
}
for (let i = 0; i < minRuns || sum < minTime; i++) {
let t0 = performance.now();
let t1 = 0;
await benchmark.run(
{
reset() {
t0 = performance.now();
},
stop() {
t1 = performance.now();
},
},
i,
);
if (t1 == 0) {
t1 = performance.now();
}
const dur = t1 - t0;
times.push(dur);
sum += dur;
}
if (benchmark.teardown) {
await benchmark.teardown();
}
times.sort((a, b) => a - b);
const runs = times.length;
const median = 0.5;
const medianTime = times[Math.floor(runs * median)];
const bytesPerSecond = benchmark.byteSize
? `${formatToMBPerSecond(benchmark.byteSize, medianTime)} `
: '';
if (format == 'replicache') {
const ptiles = [median, 0.75, 0.9, 0.95];
return `${benchmark.name} ${ptiles
.map(p => String(p * 100))
.join('/')}%=${ptiles.map(p =>
times[Math.floor(runs * p)].toFixed(2),
)}ms/op ${bytesPerSecond}(${runs} runs sampled)`;
} else {
const variance =
Math.max(medianTime - times[0], times[times.length - 1] - medianTime) /
medianTime;
return formatAsBenchmarkJS({
name: benchmark.name,
value: bytesPerSecond || `${((runs / sum) * 1000).toFixed(2)} ops/sec `,
variance: `${(variance * 100).toFixed(1)}%`,
runs,
});
}
}
/**
* @param {{name: string; value: string; variance: string; runs: number}} opts
*/
function formatAsBenchmarkJS({name, value, variance, runs}) {
// Example:
// fib(20) x 11,465 ops/sec ±1.12% (91 runs sampled)
// createObjectBuffer with 200 comments x 81.61 ops/sec ±1.70% (69 runs sampled)
return `${name} x ${value}±${variance} (${runs} runs sampled)`;
}
/**
* @param {number} size
* @param {number} timeMS
*/
function formatToMBPerSecond(size, timeMS) {
const bytes = (size / timeMS) * 1000;
return (bytes / 2 ** 20).toFixed(2) + ' MB/s';
}
const benchmarks = [
benchmarkPopulate({numKeys: 1000, clean: true}),
benchmarkPopulate({numKeys: 1000, clean: false}),
benchmarkPopulate({numKeys: 1000, clean: true, indexes: 1}),
benchmarkPopulate({numKeys: 1000, clean: true, indexes: 2}),
benchmarkReadTransaction({numKeys: 1000}),
benchmarkReadTransaction({numKeys: 5000}),
benchmarkScan({numKeys: 1000}),
benchmarkScan({numKeys: 5000}),
benchmarkSingleByteWrite(),
benchmarkWriteReadRoundTrip(),
benchmarkCreateIndex({numKeys: 1000}),
benchmarkCreateIndex({numKeys: 5000}),
];
for (let b of [benchmarkIDBRead, benchmarkIDBWrite]) {
for (let numKeys of [1, 10, 100, 1000]) {
const dataTypes = /** @type {import('./data').RandomDataType[]} */ (
/** @type unknown */ (['string', 'object', 'arraybuffer'])
);
for (let dataType of dataTypes) {
const kb = 1024;
const mb = kb * kb;
const sizes = [
kb,
32 * kb,
// Note: on blink, as of 4/2/2021, there's a cliff at 64kb
mb,
10 * mb,
100 * mb,
];
const group = dataType == 'arraybuffer' ? 'idb' : 'idb-extras';
for (let valSize of sizes) {
if (valSize > 10 * mb) {
if (numKeys > 1) {
continue;
}
} else if (valSize >= mb) {
if (numKeys > 10) {
continue;
}
}
benchmarks.push(b({group, dataType, numKeys, valSize}));
}
}
}
}
let current = 0;
/**
* @param {string[]} groups
* @param {OutputFormat} format
*/
async function nextTest(groups, format) {
while (current < benchmarks.length) {
const b = benchmarks[current++];
if (groups.indexOf(b.group) > -1) {
try {
return await runBenchmark(b, format);
} catch (e) {
return `
4695
${b.name}: Error: ${e.toString()}`;
}
}
}
return null;
}
// @ts-ignore
window.nextTest = nextTest;
// @ts-ignore
window.benchmarks = benchmarks;
// @ts-ignore
window.runAll = async function (groups) {
current = 0;
const out = /** @type {HTMLPreElement} */ (
/** @type {unknown} */ document.getElementById('out')
);
for (;;) {
const r = await nextTest(groups, 'replicache');
if (r == null) {
break;
}
out.textContent += r + '\n';
}
out.textContent += 'Done!\n';
};