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Benchmarking

If you have a function that you believe is slow, you can benchmark it to find any bottlenecks like this:

Usage​

import Reactotron from "reactotron-react-native"

function slowFunction() {
  const bench = Reactotron.benchmark("slow function benchmark")

  // Code that does thing A
  bench.step("Thing A")

  // Code that does thing B
  bench.step("Thing B")

  // Code that does thing C
  bench.stop("Thing C")
}

Note that the last call is to stop instead of step! This is important, otherwise the benchmark results won't display in Reactotron.

When slowFunction is invoked, Reactotron should show something like this:

Benchmarking Output

Tips: Time bar Thing B is the code execution time from bench.step("Thing A") to bench.step("Thing B").