Feeder not picking data at random

Gatling (Open-Source)
1

Hi, I’ve just noticed that in our load tests our list of users are not being picked at random.

I’m creating a csv feeder (25k users)

val userFeeder = csv(users.csv)

and then loading them with

feed(userFeeder.random.circular)

but each user picked was from the top of the list and works its way down in order.

I also tried

feed(userFeeder.batch.random.circular)

and

feed(userFeeder.batch(25000).random.circular)

each time the same behaviour.

Using version 3.3.1

Thanks

2

Hi,

random and circular are mutually exclusive.

3

Just try with random only

feed(userFeeder.random)

4

OMG, thanks so much! Glad it’s something simple. I assume then as it’s random the file will never run out? After all records are read it starts reading them randomly again?

5

Yes.
If you want to shuffle the records and then have a queue, that’s shuffle for you: https://gatling.io/docs/current/session/feeder/#strategies