@amonakov@forrestthewoods@castano Googling "repl" or even "intel-repl" does not yield any worthwhile answers. It is not a well-documented topic.
The examples for perf I found produced a single energy consumption value for the given time, and I wanted a graph. There was not an out-of-the-box solution that I could use for this.
While I found some random utilities on github (most were 10 years old), turbostat was not one of them.