Gatling simulation with fixed number of users for specific period of time

Question

I have my Gatling scenario set up and now I want to configure a simulation with fixed number of users for specific period of time - number of users should initially be increased gradually to specific value and then kept there by adding new as required as users finish.

I specifically don't want to use constantUsersPerSec (which injects users at a constant rate) but something like .throttle(reachUsers(100) in rampUpTime, holdFor(10 minute)) which should inject users when required.

Can you elaborate on what you mean by "should inject users when required" — niharika_neo, Nov 09 '16 at 04:19
@niharika_neo - I want number of users to be kept constant - when some users finish their scenario Gatling should inject new ones. — Jarek Przygódzki, Nov 09 '16 at 06:23

score 7 · Accepted Answer · answered Aug 26 '17 at 17:55

If it's still relevant: Gatling supports a throttle method pretty much as you outlined it. You can use the following building blocks (taken from the docs):

reachRps(target) in (duration): target a throughput with a ramp over a given duration.

jumpToRps(target): jump immediately to a given targeted throughput.

holdFor(duration): hold the current throughput for a given duration.

So a modified example for your use case could look something like this:

setUp(scn.inject(constantUsersPerSec(100) during(10 minutes))).throttle(
  reachRps(100) in (1 minute),
  holdFor(9 minute)
)

Gatling simulation with fixed number of users for specific period of time

1 Answers1