# Gatling Injection Doubt

**URL:** <https://community.gatling.io/t/gatling-injection-doubt/6108>\
**Category:** Gatling (Open-Source)\
**Created:** [May 21, 2021, 2:49am UTC](https://community.gatling.io/t/gatling-injection-doubt/6108 "2021-05-21T02:49:01Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![atul\_verma](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@atul\_verma](https://community.gatling.io/u/atul_verma)\
**Post date:** [May 21, 2021, 2:49am UTC](https://community.gatling.io/t/gatling-injection-doubt/6108/1 "2021-05-21T02:49:01Z")

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Hello,

I want to put load with below configuration:  
UserCount:5000  
RepeatCount:10  
Pause time:30 seconds  
MaxDuration:20 minutes

so my first question is–\> In Open model which injection I should use for injecting 5000 request from 5000 users in 30 second…and then again in 30 second 5000 request from 5000 users…???

second Question: Pause time is the time between two users or between two request?

Regards  
Atul Verma

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**Author:** ![atul\_verma](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@atul\_verma](https://community.gatling.io/u/atul_verma)\
**Post date:** [May 21, 2021, 8:35am UTC](https://community.gatling.io/t/gatling-injection-doubt/6108/2 "2021-05-21T08:35:26Z")

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my requirement is after every 30 second 5000 users should fire 5000 requests at a time…please suggest suitable injection?

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**Author:** ![sbrevet](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/sbrevet/32/830_2.png) [@sbrevet](https://community.gatling.io/u/sbrevet)\
**Post date:** [May 21, 2021, 9:09am UTC](https://community.gatling.io/t/gatling-injection-doubt/6108/3 "2021-05-21T09:09:28Z")

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Hi Atul,

As I understand your requirements:

For a single User (ie, the Scenario):

- repeat 10 times:
  - [`rendezvous`](https://gatling.io/docs/current/general/scenario/#rendezvous) with 4999 other users
  - `exec` a request
  - [`pause`](https://gatling.io/docs/current/general/scenario/#pause) for 30 seconds

The simulation is just to `setUp` the injection to create those 5000 `atOnceUsers`.

But, this is not really realistic, don’t you think?

Cheers!

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**Author:** ![atul\_verma](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@atul\_verma](https://community.gatling.io/u/atul_verma)\
**Post date:** [May 21, 2021, 10:19am UTC](https://community.gatling.io/t/gatling-injection-doubt/6108/4 "2021-05-21T10:19:41Z")

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Hi **Sébastien BREVET,**

Can you please provide me two injection which generate the spike as in attachment. PFA

Thanks

![SpikeImage.JPG](https://europe1.discourse-cdn.com/flex013/uploads/gatling2/original/1X/55d1dbbcad6b19b8d69527887e75fbce055715e6.jpeg)