Webpack memory usage on require #9781
Description
I don't know if this is a bug, but I noticed that just requiring webpack increases the memory usage by the process by around 1GB. Why is that? Could the increase number be optional (in size)?
This repo https://github.com/tiagonapoli/webpack-memory has the instructions to reproduce and has the following code:
const webpack = require('webpack')
setInterval(() => {
console.log("Doing nothing :)")
}, 2000)
Memory usage:
Mem: 15617552K used, 701192K free, 478896K shrd, 1820824K buff, 6563680K cached
CPU: 13% usr 11% sys 0% nic 69% idle 0% io 0% irq 4% sirq
Load average: 1.27 1.26 1.05 4/1357 24
PID PPID USER STAT VSZ %VSZ CPU %CPU COMMAND
1 0 root S 1250m 7% 2 0% node index.js
19 0 root R 1524 0% 0 0% top
Memory usage commenting const webpack = require('webpack'):
Mem: 15008652K used, 1310092K free, 460732K shrd, 1823676K buff, 6574888K cached
CPU: 12% usr 7% sys 0% nic 80% idle 0% io 0% irq 0% sirq
Load average: 0.73 1.09 1.01 2/1288 17
PID PPID USER STAT VSZ %VSZ CPU %CPU COMMAND
1 0 root S 211m 1% 3 0% node index.js
13 0 root R 1524 0% 0 0% top
I'm concerned about this because I have a use case where there are around 15 pods in Kubernetes using webpack. Some worker processes are spawned, and when each of them require webpack they increase their memory usage by 1GB, resulting in a memory usage over time of something like this, which may be a problem:
