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Say I create a quick keyboard macro, but find that executing it in quick succession is extremely slow. How can I determine in what functions or packages this command is spending most of its time? Maybe some convenient help binding like C-h % which will then display the performance details for the next command executed.

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Emacs includes a CPU profiler for this purpose.

C-hig (elisp)Profiling RET

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  • Should this binding run info from info.el?
    – Dodgie
    Commented May 31, 2018 at 23:26
  • Yes, that will display the node in question from the elisp manual.
    – phils
    Commented Jun 1, 2018 at 0:15

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