Windows dtrace like tool runs faster than on Solaris

I stumbled upon an interesting tool.

NTrace
NTrace uses a novel approach of instrumenting binary code on the fly by leveraging certain aspects of the Microsoft hotpatching infrastructure. This allows NTrace to be both very robust and fast: On x86, NTrace outperforms DTrace by a factor of almost three!
  1. This tool is not yet downloadable.
  2. I think this tool is more closer to truss(strace on linux) than to dtrace.
  3. The author apparently did a good study on dtrace implementations and explains difference between SPARC and IA-32 in "NTrace: Function Boundary Tracing for Windows on IA-32".
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