# user number in gatling

**URL:** <https://community.gatling.io/t/user-number-in-gatling/3670>\
**Category:** Gatling (Open-Source)\
**Created:** [April 12, 2017, 4:05pm UTC](https://community.gatling.io/t/user-number-in-gatling/3670 "2017-04-12T16:05:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mohamed-Amine\_Ben\_Na](https://avatars.discourse-cdn.com/v4/letter/m/d2c977/32.png) [@Mohamed-Amine\_Ben\_Na](https://community.gatling.io/u/Mohamed-Amine_Ben_Na)\
**Post date:** [April 12, 2017, 4:05pm UTC](https://community.gatling.io/t/user-number-in-gatling/3670/1 "2017-04-12T16:05:23Z")

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Hello,  
how many user gatling supports?

setUp(scn.inject(atOnceUsers(???))

Thanks a lot.

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<div class="post-metadata">

**Author:** ![aidylewis](https://avatars.discourse-cdn.com/v4/letter/a/e9a140/32.png) [@aidylewis](https://community.gatling.io/u/aidylewis)\
**Post date:** [April 13, 2017, 9:32am UTC](https://community.gatling.io/t/user-number-in-gatling/3670/2 "2017-04-13T09:32:51Z")

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That would depend on a number of things, including the spec of load injectors, kernel tuning, available bandwidth, response times (with scenarios that contain \> 1 request) . But this contrived simulation ran 188336 RPS.  
[https://github.com/bbc/notes-on-perf-testing/blob/master/ch/gatling/benchmark.md](https://github.com/bbc/notes-on-perf-testing/blob/master/ch/gatling/benchmark.md)

Frontline contains more performant Gatling libraries.

Aidy