Unfortunately, I don't have Go 1.6 numbers.
I benchmarked my parallel 2-d convex hull program in Go 1.5 and Go 1.7 on 
Windows 64-bit platform. The code uses big rational numbers (math/big.Rat) 
which puts pressure on the GC. I observed noticeable reduction in run 
times: 1-core version of the Go 1.7 code took between 76%-86% wall time of 
the Go 1.5 code. The numbers are even better running on 4 cores: the Go 1.7 
code took between 71%-79% wall time of the Go 1.5 code.

You can see the code and benchmark timings at 
https://github.com/reconditematter/pch2

Well done, the Go Team!

-Lenny-


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