How to see vertex reuse(post transform cache, vertex cache) in nsight graphics


I’m working on game industry as programmer.
Recently, I have been trying to optimize vertex shading in our game.
Because Nsight showed “PES+VPC” is very high.

I know modern gpus doesn’t have vertex cache. But I know it de-duplicates vertex indices in vertices batch.
I want to know how many indices is de-duplicated.
If nsight graphics doesn’t show that, Please let me know other tools for it.