[Solved] What happens if you fork more workers than CPU cores in a Node.js app using cluster? — Ans: Workers compete for CPU, causing context switching and possible slowdown | Node.js

Node.js - Cluster Module

What happens if you fork more workers than CPU cores in a Node.js app using cluster?

AWorkers compete for CPU, causing context switching and possible slowdown

BExtra workers are ignored and not created

CApp crashes immediately due to overload

DWorkers run faster because of more parallelism

Step-by-Step Solution

Solution:

Step 1: Understand CPU core limits
Each CPU core can run one thread at a time; more workers than cores cause switching overhead.
Step 2: Effect of too many workers
Extra workers cause CPU to switch tasks rapidly, which can slow down performance instead of speeding it up.
Final Answer:
Workers compete for CPU, causing context switching and possible slowdown -> Option A
Quick Check:
Too many workers = D [OK]

Quick Trick: Match workers to CPU cores to avoid slowdowns [OK]

Common Mistakes:

Master "Cluster Module" in Node.js

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