Ramp and Hold Users for Some time and Ramp again

0
votes

I have the following scenario to be load tested for a service and it does not seem to work as expected. My scenario is as follows.

  • Test with rampUsers(100) over 15 minutes duration
  • Hold the users for about 10 minutes holdFor(10 minutes)
  • Then again rampUsers(200) over 15 minutes duration
  • Hold the users for about 10 minutes holdFor(10 minutes)
  • Then again rampUsers(200) over 15 minutes duration

I am trying to use throttle option for this but it does not seem to work as expected here is my code snippets combinations that I have tried so far

//NUM_USERS = 300
//DURATION = 15 minutes
//CONSTANT_DURATION = 5 minutes
// Tried with different combinations of NUM_USERS and DURATION but not helpful

scn.inject(
      rampUsers(NUM_USERS*1) during DURATION,
      constantUsersPerSec(1) during CONSTANT_DURATION,
      rampUsers(NUM_USERS*2) during DURATION,
      constantUsersPerSec(2) during CONSTANT_DURATION,
      rampUsers(NUM_USERS*3) during DURATION,
      constantUsersPerSec(3) during CONSTANT_DURATION
)

scn.inject(
          rampUsers(NUM_USERS) during DURATION
        ).throttle(
          reachRps(NUM_USERS/4) in (CONSTANT_DURATION),
          holdFor(CONSTANT_DURATION),
          jumpToRps(NUM_USERS/3),
          holdFor(CONSTANT_DURATION),
          jumpToRps(NUM_USERS/2),
          holdFor(CONSTANT_DURATION)
)

scn.inject(
      rampUsers(NUM_USERS) during DURATION
    ).throttle(
        holdFor(CONSTANT_DURATION),
        reachRps(NUM_USERS+NUM_USERS) in (DURATION+DURATION),
        holdFor(CONSTANT_DURATION)
)

Can any one help on this which one works in this case. I would like to have a graph like this enter image description here

1
performance-testingload-testinggatlingscala-gatling
your graph is in requests per second, but your initial description seems to be in relation to users - what are you after? – James Warr
The graph is just for easy understanding.. no relationship with the use case.. you can ignore the labels – Vinod Krishnan
so you want to target concurrent users? Your script doesn't reflect that – James Warr
I want to hold the user not the concurrent user scenario.. Want to reach to some level of users and maintain that level for some time.. – Vinod Krishnan

1 Answers

0
votes

To target injection rate as you stated you want in the comments, you need something like this

scn.inject(
  rampUsersPerSec(0) to (300) during DURATION,
  constantUsersPerSec(300) during CONSTANT_DURATION,
  rampUsersPerSec(300) to (600) during DURATION,
  constantUsersPerSec(600) during CONSTANT_DURATION,
  ...
)