Randomize throttling in Gatling

Question

Is there any way we can randomize the request per second in Gatling? In the documentation they have provided reachRps and jumpToRps which doesn't provide dynamic request within a range. How can i setup the script to publish request in range of 500 to 1000 per second range?

package sample

import io.gatling.core.Predef._
import io.gatling.http.Predef._

import scala.concurrent.duration._

class PerformanceTest  extends Simulation {

  object rqstObj {
    val getData =
      exec(
        http("Get SourceId")
          .post(SomeURL)
          .body(SomeBody)
          .check(status.is(200))
      )
  }

  val rqst = scenario("Test1")
  .forever(exec(rqstObj.getData))  

    setUp(rqst.inject(
    constantUsersPerSec(18) during (5 seconds)
    ).protocols(httpProtocol)).throttle(
        //Instead of writing the below code, i need something dynamic as we have for rampUser
      reachRps(650) in (1 minute),
      reachRps(950) in (1 minute),
      reachRps(650) in (1 minute)
      ).maxDuration(3 minutes)
}

score 0 · Answer 1 · answered Aug 13 '18 at 15:44

You can generate list of throttle steps with random values fe.:

val randomThrottlingA = Array.fill(300){Random.nextInt(50)+50}.map(
  limit => reachRps(limit).in(1 second)
)

Or

val randomThrottlingB = for(_ <- 1 to 300) yield {
  reachRps(Random.nextInt(50)+50).in(1 second)
}

Then you can use it as param for throttle():

setUp(myscenario.inject(injectionProfile).throttle(randomThrottlingA))

Of course list do not need to have random values you can build it based on any algorithm you like.

Randomize throttling in Gatling

1 Answers1