For this specific example? This isn't really a research project, in the normal sense of the term. This is a report of a very thorough engineering effort to fix

For this specific example? This isn't really a research project, in the normal sense of the term. This is a report of a very thorough engineering effort to fix the scaling of the IO manager already in GHC. It doesn't invent anything new. It does detail every issue they found and how they dealt with it. One thing I'm surprised no one has mentioned is that they found a race condition in epoll that's existed since version 2.4 of the linux kernel.