Perf compatison

compare-thread-vs-main-loop.js

const {StaticPool} = require('node-worker-threads-pool');

const task = (array) => {
    for (let i = 0; i < array.length; i++) {
        array[i] = array[i] ** 2;
    }
};
const pool = new StaticPool({
    size: 4,
    task,
});

const measureTime = async (fn, data, name, iterations = 100) => {
    let totalDuration = 0;
    for (let i = 0; i < iterations; i++) {
        const start = Date.now();

        await fn(data);

        totalDuration += Date.now() - start;
    }

    console.log(
        'Needed ',
        (totalDuration / iterations).toFixed(3),
        'ms on avg for',
        iterations,
        'iterations for processing',
        name
    );
};

async function main() {
    const sharedArray = new Float32Array(
        new SharedArrayBuffer(Float32Array.BYTES_PER_ELEMENT * 2048)
    );

    sharedArray.fill(1.4);
    await measureTime(pool.exec, sharedArray, 'threadpool');
    sharedArray.fill(1.4);
    await measureTime(task, sharedArray, 'normal run');
}

main();