CPU usage of NextJS runtime

[y-a-v-a]

Summary

I was trying to understand how the CPU usage is of a running NextJS application after next start. I found in the code experimental.cpus, I've seen some os.cpus() calls in the code, but it is not fully clear to me how much CPUs a running nextjs app can or will use.

I'm trying to fune-tune my production configuration when running NextJS in a docker container, and I'm wondering if I can better assign it 1 vCPU or that I can better give it 2 or 4 vCPUs. Of course this might relate to the amount of memory assigned too, but let's say ideally I would like to have the highest event loop and a minimum CPU time per tick.

Could someone shed a light on this? Is experimental.cpus documented somewher? I was unable to find it but I might not have searched deep enough haha.

(running NextJS 14)

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