We currently set GOMAXPROCS to the available number of CPU cores if nothing is explicitly configured by the user:

This doesn't play very nice with CPU quotas. See golang/go#33803

A possible solution might be https://github.com/uber-go/automaxprocs

 if os.Getenv("GOMAXPROCS") == "" { 
 	maxprocs.Set(maxprocs.Logger(log.Printf))
 } 

We can even get away with a simple import, because automaxprocs honors GOMAXPROCS by default:

import _ "go.uber.org/automaxprocs"

A blog post which covers this topic: https://www.riverphillips.dev/blog/go-cfs/