Interesting tool of the day: rr

Jean-Yves Avenard, of HP-48 fame, suggested I take a look at rr, in reaction to my post about the ELFE flight recorder.

The approach taken by rr is entirely different from the one I used in ELFE. From the web page, rr records program execution at the machine level, with the intent to allow later deterministic replay of a recorded session within gdb. I find this idea extremely interesting.

It does not seem to be packaged in Fedora 25 yet. At least, dnf install rr gives nothing. But I think I’m going to spend some time installing and testing it soon. In the meantime, I just share its existence.

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