⏱ Kotlin Multiplatform Benchmark

Several small benchmarks to compare:

• Kotlin JVM
• Kotlin JS
• Kotlin Native
• Java JVM
• Kotlin GraalVM
• Java GraalVM

It contains three benchmarks:

Math

Simple computations

fun benchMath(iterations: Int): Double {
  var c = 0.0
  for (i in 0..iterations) {
    c += (i / 2.0)
    c += (i % 3.0)
    c += sqrt(i * 3.0)
    c += 1
  }
  return c
}

String

String concatenation

fun benchString(iterations: Int) {
    var c = 0L
    var string = ""
    for (i in 0..iterations) {
        c += (i / 3)
        c += 1
        val next = c % 10
        string += next
    }
}

Memory

Class instantiation

fun benchObjectList(iterations: Int): Int {
    val list = mutableListOf<Machine>()
    for (i in 0..iterations) {
        list.add(Machine("ABC-0$i", i, i / 3.0))
    }
    return list.size
}

class Machine(val name: String, val wheels: Int, val weight: Double)