Comment by jandrewrogers

If you are severely I/O bound it isn't intrinsic, it means your server is badly under-provisioned in the I/O department. Linux on a modern server can push 200 GB/s of I/O. Even if web services were engineered to a standard that could consume that much I/O, which they are not, you would have to be astonishingly wasteful to burn it all.

It is rare to be severely I/O bound because software engineered for I/O performance tends to run out of memory bandwidth first.

Games are not throughput-optimized systems in any conventional sense. They are a canonical example of latency-optimized systems.

I have nothing against GCs, I use them regularly even in performance-sensitive contexts. But too many people understate the adverse impact of GCs on performance contrary to evidence and theory.