An example of basic performance measurement

Here’s a basic example of an operation to be measured:

fun sampleOperation() {
    Thread.sleep(1)
}

The goal of this example is to find out the following aspects:

• Throughput: How many operations can be performed in a second
• Latency: How long it takes to finish an operation on average

A small function, measureTotalTimeElapsed, must be defined to measure the total time elapsed for all iterations of the operation:

fun measureTotalTimeElapsed(
    iterations: Int,
    operation: (Int) -> Unit,
): Long =
    measureTimeMillis {
        repeat(iterations, operation)
    }

This function uses the measureTimeMillis Kotlin function from Standard Library to capture the time spent in repeating the operation.

Finally, this is the main function to launch the test:

fun main...