Webpack Dev Server memory grows in size and crashs sooner or later.

[SebastianStehle]

Hi,

I have an issue with webpack dev server (4.7.4) and webpack (5.69.1).

It works fine but the memory usage grows with each change for about 100 MB and then eventually crashs when 6GB are reached. This is the maximum I have configured.

I have made a memory dump with Chrome and I see a lot of cashed files, but I don't know if this is normal or not.

Sometimes it is even the same file:

Any ideas how to debug this further?

[alexander-akait]

Hello, can your upload files here?

[SebastianStehle]

Cache: false makes everything way slower but does not seem to have an impact.

[alexander-akait]

Sounds like we have a bug/limitation, can you try to set https://webpack.js.org/configuration/cache/#cachemaxgenerations, for large projects you need to have low value

[SebastianStehle]

It seems to help and the memory stays more or less constant. It slowly jump from 3.2GB to 4GB and then falls back to 3.2GB after some time. I guess this is the Node GC.

[alexander-akait]

@SebastianStehle Can you provide now many modules (and their size) you have? You can use webpack bundler analizer

[SebastianStehle]

https://www.dropbox.com/s/nysbxdypyxs5pc8/report.html?dl=0