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Hamzali/anonvsref.js

Created March 31, 2018 10:25
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Anonymous function vs Object reference Performance
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anonvsref.js
const NS_PER_SEC = 1e9;
const elapsedTimeMs = diff => (((diff[0] * NS_PER_SEC) + diff[1]) / 1e6);
const testCount = 1000;
const calcResults = (t, heapMem) => console.log("Average Elapsed Time:", (total / testCount).toFixed(2), "ms", "\nHeap Used Memory:", (heapMem / 1e6).toFixed(2), "MB");
let mem = process.memoryUsage();
// anon function :(
const obj = {};
console.log("ANON FUNCTIONS: ");
let total = 0;
let j = 0;
while(j < testCount) {
let i = 10000;
const timeStart = process.hrtime();
while(i--) {
obj.method = () => "helloo";
}
total += elapsedTimeMs(process.hrtime(timeStart));
j++;
}
mem = process.memoryUsage().heapUsed - mem.heapUsed;
calcResults(total, mem);
// object and ref
function methodTest() {
return "hello";
}
const obj2 = {};
console.log("FUNCTION REF AND OBJECT: ");
total = 0;
j = 0;
while(j < testCount) {
let i = 10000;
const timeStart = process.hrtime();
while(i--) {
obj2.method = {m: methodTest, p: ["hell", "yeah"]};
}
total += elapsedTimeMs(process.hrtime(timeStart));
j++;
}
calcResults(total, process.memoryUsage().heapUsed - mem);
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