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401 lines (372 loc) · 9.85 KB
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const valSize = 1024;
import {Replicache} from '../out/replicache.mjs';
import {makeRandomStrings} from './data.js';
/**
* @typedef {import('./perf').Benchmark} Benchmark
* @typedef {import('./perf').Bencher} Bencher
* @typedef {import('../out/replicache').WriteTransaction} WriteTransaction
* @typedef {import('../out/replicache').ReadTransaction} ReadTransaction
* @typedef {import('../out/replicache').JSONValue} JSONValue
*/
/**
* @param {unknown} b
*/
function assert(b) {
// console.assert is not working inside playwright?
if (!b) {
throw new Error('Assertion failed');
}
}
/**
* @param {{numKeys: number; clean: boolean; indexes?: number;}} opts
* @returns Benchmark
*/
export function benchmarkPopulate(opts) {
return {
name: `populate ${valSize}x${opts.numKeys} (${
opts.clean ? 'clean' : 'dirty'
}, ${`indexes: ${opts.indexes || 0}`})`,
group: 'replicache',
byteSize: opts.numKeys * valSize,
/**
* @param {Bencher} bencher
*/
async run(bencher) {
const rep = await makeRepWithPopulate();
if (!opts.clean) {
await rep.mutate.populate({
numKeys: opts.numKeys,
randomStrings: makeRandomStrings(opts.numKeys, valSize),
});
}
for (let i = 0; i < (opts.indexes || 0); i++) {
await rep.createIndex({
name: `idx${i}`,
jsonPointer: '',
});
}
const randomStrings = makeRandomStrings(opts.numKeys, valSize);
bencher.reset();
await rep.mutate.populate({numKeys: opts.numKeys, randomStrings});
bencher.stop();
await rep.close();
},
};
}
/**
* @param {{numKeys: number;}} opts
* @returns Benchmark
*/
export function benchmarkReadTransaction(opts) {
return {
name: `read tx ${valSize}x${opts.numKeys}`,
group: 'replicache',
byteSize: opts.numKeys * valSize,
rep: /** @type Replicache */ (/** @type unknown */ (null)),
async setup() {
this.rep = await makeRepWithPopulate();
await this.rep.mutate.populate({
numKeys: opts.numKeys,
randomStrings: makeRandomStrings(opts.numKeys, valSize),
});
},
async teardown() {
await this.rep.close();
},
async run(/** @type Bencher */ bench) {
let getCount = 0;
let hasCount = false;
await this.rep.query(async (/** @type ReadTransaction */ tx) => {
for (let i = 0; i < opts.numKeys; i++) {
// use the values to be confident we're not optimizing away.
// @ts-ignore
getCount += (await tx.get(`key${i}`)).length;
// @ts-ignore
hasCount = (await tx.has(`key${i}`)) === true ? 1 : 0;
}
});
bench.stop();
console.log(getCount, hasCount);
},
};
}
/**
* @param {{numKeys: number;}} opts
* @returns Benchmark
*/
export function benchmarkScan(opts) {
return {
name: `scan ${valSize}x${opts.numKeys}`,
group: 'replicache',
byteSize: opts.numKeys * valSize,
rep: /** @type Replicache */ (/** @type unknown */ (null)),
async setup() {
this.rep = await makeRepWithPopulate();
await this.rep.mutate.populate({
numKeys: opts.numKeys,
randomStrings: makeRandomStrings(opts.numKeys, valSize),
});
},
async teardown() {
await this.rep.close();
},
async run() {
await this.rep.query(async (/** @type ReadTransaction} */ tx) => {
let count = 0;
for await (const value of tx.scan()) {
// use the value to be confident we're not optimizing away.
// @ts-ignore
count += value.length;
}
console.log(count);
});
},
};
}
/**
* @returns Benchmark
*/
export function benchmarkSingleByteWrite() {
return {
name: 'write single byte',
group: 'replicache',
byteSize: 1,
rep: /** @type Replicache */ (/** @type unknown */ (null)),
write: /** @type {(a: number) => Promise<void>} */ (
/** @type unknown */ (null)
),
async setup() {
this.rep = await makeRep({
mutators: {
write: (/** @type WriteTransaction */ tx, /** @type number */ i) =>
tx.put('k', i % 10),
},
});
this.write = this.rep.mutate.write;
},
async teardown() {
await this.rep.close();
},
/**
* @param {Bencher} _
* @param {number} i
*/
async run(_, i) {
await this.write(i);
},
};
}
/**
* @param {{numKeys: number;}} opts
* @returns Benchmark
*/
export function benchmarkCreateIndex(opts) {
return {
name: `create index ${valSize}x${opts.numKeys}`,
group: 'replicache',
/**
* @param {Bencher} bencher
*/
async run(bencher) {
const rep = await makeRepWithPopulate();
await rep.mutate.populate({
numKeys: opts.numKeys,
randomStrings: makeRandomStrings(opts.numKeys, valSize),
});
bencher.reset();
await rep.createIndex({
name: `idx`,
jsonPointer: '',
});
bencher.stop();
await rep.close();
},
};
}
/**
* @returns Benchmark
*/
export function benchmarkWriteReadRoundTrip() {
/** @type string */
let key;
/** @type number */
let value;
return {
name: 'roundtrip write/subscribe/get',
group: 'replicache',
rep: /** @type Replicache */ (/** @type unknown */ (null)),
async setup() {
this.rep = await makeRep({
mutators: {
write: (/** @type WriteTransaction */ tx) => tx.put(key, value),
},
});
},
async teardown() {
await this.rep.close();
},
/**
* @param {Bencher} bench
* @param {number} i
*/
async run(bench, i) {
key = `k${i}`;
value = i;
let {promise, resolve} = resolver();
const unsubscribe = this.rep.subscribe(
(/** @type ReadTransaction */ tx) => tx.get(key),
{
onData(/** @type JSONValue | undefined */ res) {
// `resolve` binding needs to be looked up on every iteration
resolve(res);
},
},
);
// onData is called once when calling subscribe
await promise;
// reset these.
({promise, resolve} = resolver());
await this.rep.mutate.write();
const res = await promise;
if (res !== value) {
throw new Error();
}
bench.stop();
unsubscribe();
},
};
}
/**
* @param {number} ms
*/
export function sleep(ms) {
return new Promise(resolve => {
// @ts-ignore
setTimeout(() => resolve(), ms);
});
}
/**
* @param {{count: number;}} opts
* @returns Benchmark
*/
export function benchmarkSubscribe(opts) {
const {count} = opts;
const maxCount = 1000;
const minCount = 10;
const key = (/** @type {number} */ k) => `key${k}`;
if (count > maxCount) {
throw new Error('Please increase maxCount');
}
return {
name: `subscription ${count}`,
group: 'replicache',
/**
* @param {Bencher} bencher
*/
async run(bencher) {
const rep = await makeRep({
mutators: {
/**
* @param {WriteTransaction} tx
* @param {number} count
*/
async init(tx) {
await Promise.all(
Array.from({length: maxCount}, (_, i) => tx.put(key(i), i)),
);
},
/**
* @param {WriteTransaction} tx
* @param {{key: string, val: JSONValue}} options
*/
async put(tx, options) {
await tx.put(options.key, options.val);
},
},
});
await rep.mutate.init(count);
const data = Array.from({length: count}).fill(0);
let >
const subs = Array.from({length: count}, (_, i) =>
rep.subscribe((/** @type {ReadTransaction} */ tx) => tx.get(key(i)), {
onData(/** @type {JSONValue} */ v) {
onDataCallCount++;
data[i] = v;
},
}),
);
// We need to wait until all the initial async onData have been called.
while (onDataCallCount !== count) {
await sleep(10);
}
// The number of mutations to do. These should each trigger one
// subscription. The goal of this test is to ensure that we are only
// paying the runtime cost of subscriptions that are affected byt the
// changes.
const mut = 10;
if (mut < minCount) {
throw new Error('Please decrease minCount');
}
const rand = Math.random();
bencher.reset();
for (let i = 0; i < mut; i++) {
await rep.mutate.put({key: key(i), val: i ** 2 + rand});
}
bencher.stop();
subs.forEach(c => c());
assert( count + mut);
for (let i = 0; i < count; i++) {
assert(data[i] === (i < mut ? i ** 2 + rand : i));
}
await rep.close();
},
};
}
/**
* @param {string} name
*/
function deleteDatabase(name) {
return new Promise((resolve, reject) => {
const req = indexedDB.deleteDatabase(name);
req.>
req. = req.>
});
}
let counter = 0;
async function makeRep(options = {}) {
const name = `bench${counter++}`;
await deleteDatabase(name);
return new Replicache({
name,
pullInterval: null,
...options,
});
}
async function makeRepWithPopulate() {
return makeRep({
mutators: {
populate: async (
/** @type WriteTransaction} */ tx,
/** @type {{numKeys: number, randomStrings: string[]}} */ {
numKeys,
randomStrings,
},
) => {
for (let i = 0; i < numKeys; i++) {
await tx.put(`key${i}`, randomStrings[i]);
}
},
},
});
}
/**
* @template R
* @returns {{promise: Promise<R>, resolve: (res: R) => void}}
*/
function resolver() {
let resolve = /** @type {(res: R) => void} */ (/** @type unknown */ (null));
const promise = new Promise(res => {
resolve = res;
});
return {promise, resolve};
}
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