[nasretdinov]

You probably could limit the bloating of Go programs by setting GOMAXPROCS to something like 1 or 2 on smaller machines, but then again you wouldn't get the best performance. So IMO good call here to rewrite it in a language without GC.

[pjmlp]

Or make better use of the language capabilities to use value types.

[nasretdinov]

Value types do indeed reduce the GC pressure, however large Virtual Memory usage (in my understanding) is mostly due to large thread count by default (one per core), and some unavoidable GC overhead in general.