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rvagg wants to merge 3 commits into from
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benchmark: add microbenchmarks for ES Map #7581

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8b75639
benchmark: add microbenchmarks for ES Map
rvagg Jul 7, 2016
15bd927
squash
rvagg Oct 18, 2016
b550a78
squash, back up to 1 million
rvagg Oct 18, 2016
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benchmark: add microbenchmarks for ES Map
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@rvagg
rvagg committed Oct 18, 2016
commit 8b75639a4d48e517856d23f4bd0873cd50f9a619
96 changes: 96 additions & 0 deletions benchmark/es/map-bench.js
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'use strict';

const common = require('../common.js');
const assert = require('assert');

const bench = common.createBenchmark(main, {
method: ['object', 'nullProtoObject', 'fakeMap', 'map'],
millions: [10]
});

function runObject(n) {
const m = {};
var i = 0;
bench.start();
for (; i < n; i++) {
m['i' + n] = n;

@fhinkel fhinkel Jul 29, 2016

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Are we trying to set the same two properties ('i10000000' and 's10000000') 10 million times? If so, maybe use keys like 'a', 'b'. Or should the keys be 'i' + i and 's' + i?

m['s' + n] = String(n);
assert.equal(m['i' + n], m['s' + n]);
m['i' + n] = undefined;
m['s' + n] = undefined;
}
bench.end(n / 1e6);
}

function runNullProtoObject(n) {
const m = Object.create(null);
var i = 0;
bench.start();
for (; i < n; i++) {
m['i' + n] = n;
m['s' + n] = String(n);
assert.equal(m['i' + n], m['s' + n]);
m['i' + n] = undefined;
m['s' + n] = undefined;
}
bench.end(n / 1e6);
}

function fakeMap() {
const m = {};
return {
get(key) { return m['$' + key]; },
set(key, val) { m['$' + key] = val; },
get size() { return Object.keys(m).length; },
has(key) { return Object.prototype.hasOwnProperty.call(m, '$' + key); }
};
}

function runFakeMap(n) {
const m = fakeMap();
var i = 0;
bench.start();
for (; i < n; i++) {
m.set('i' + n, n);
m.set('s' + n, String(n));
assert.equal(m.get('i' + n), m.get('s' + n));
m.set('i' + n, undefined);
m.set('s' + n, undefined);
}
bench.end(n / 1e6);
}

function runMap(n) {
const m = new Map();
var i = 0;
bench.start();
for (; i < n; i++) {
m.set('i' + n, n);
m.set('s' + n, String(n));
assert.equal(m.get('i' + n), m.get('s' + n));
m.set('i' + n, undefined);
m.set('s' + n, undefined);
}
bench.end(n / 1e6);
}

function main(conf) {
const n = +conf.millions * 1e6;

switch (conf.method) {
case 'object':
runObject(n);
break;
case 'nullProtoObject':
runNullProtoObject(n);
break;
case 'fakeMap':
runFakeMap(n);
break;
case 'map':
runMap(n);
break;
default:
throw new Error('Unexpected method');
}
}