Question about GPU Metrics sampling improvements about BAR1 on 2021.3

I have a question about BAR1 measurement on 2021.3 (see Ref1)
The Nsight Systems document does not mention BAR1, is this means PCIe throughput measurement (see Ref2)?

Reference

  1. NVIDIA Nsight Systems | NVIDIA Developer
  2. Nsight Systems User Guide :: Nsight Systems Documentation

BAR1 support was added in Nsys 2021.4.

Unfortunately the BAR1 improvements did not make it into the documentation.

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