We haven't spent much time with those benchmarks. We looked at a couple of them and believe that there are better ways to write them in C# and get better results. That's not FUD but our findings.

This is a great community activity. Clearly, the community is more than capable of performance enhancements, based on the improvements they have made in the product.

If people start improving the C# benchmarks, please file an issue on dotnet/core to get feedback and some cred. We may do another blog post on that if there is some gravity around the activity.