Node VM context creation benchmark

vm-benchmark.js

const vm = require('vm');

const batchSize = 100;
const limit = batchSize * 30;

let contexts = new Array(limit);
for (let i = 0; i < limit / batchSize; i++) {
  // Compute the average time for each batch
  let start = Date.now();
  for (let j = 0; j < batchSize; j++) {
    contexts.push(vm.createContext({}));
  }
  let averageTime = (Date.now() - start) / batchSize;
  console.log(
    `Average time to create contexts [${i * batchSize}...${(i + 1) * batchSize -
      1}] = ${averageTime}ms`
  );
}