Here is how to get started with RLib Perf
First we'll include libraries we need: rlib-perf and some functions to act as our control group.
const { Perf } = require("rlib-perf");
const _ = require("lodash");
const R = require("rlib");
We will be checking the performance of a iterable filter function.
function* iterableFilter(items, callback) {
for (const item of items) {
if (callback(item)) {
yield item;
}
}
}
We create a new instance of the performance runner.
const p = new Perf();
We can set up some information about our tests.
p.title = "Filter function comparison";
p.trials = 100;
// Setup each test with some data
p.setup( n => {
return R.repeatFunc(1000 * (n + 1), idx => idx);
});
// Label each trial for CSV purposes
p.label(n => `${1000 * (n + 1)}`);
Next we define our individual tests
// Common filter function
function filterFunc(n) {
return n % 3 === 0;
}
p.test("native", state => {
state.filter(filterFunc);
});
p.test("lodash", state => {
_.filter(state, filterFunc);
});
p.test("rlib", state => {
R.filter(state, filterFunc);
});
p.test("iterable", state => {
const it = iterableFilter(state, filterFunc);
[...it];
});
Run our tests...
p.run();
And print out the results!
p.print();
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