# Maximum number of concurrent requests

**URL:** <https://community.gatling.io/t/maximum-number-of-concurrent-requests/4405>\
**Category:** Gatling (Open-Source)\
**Created:** [July 2, 2018, 6:43pm UTC](https://community.gatling.io/t/maximum-number-of-concurrent-requests/4405 "2018-07-02T18:43:11Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![arik\_pamnani](https://avatars.discourse-cdn.com/v4/letter/a/b5e925/32.png) [@arik\_pamnani](https://community.gatling.io/u/arik_pamnani)\
**Post date:** [July 2, 2018, 6:43pm UTC](https://community.gatling.io/t/maximum-number-of-concurrent-requests/4405/1 "2018-07-02T18:43:11Z")

</div>

I want to load test my server with 30k concurrent requests. Can I do this with gatling or ab. I tried doing this with ab (using **ab -c 30000 -n 90000 http://…** ). But, I am getting some receive exceptions. I am not sure whether these exceptions are due to limitations of ab or of my server. I had increased the ulimit to greater than 30k.

---

<div class="post-metadata">

**Author:** ![Alan\_Artigao](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@Alan\_Artigao](https://community.gatling.io/u/Alan_Artigao)\
**Post date:** [July 2, 2018, 7:36pm UTC](https://community.gatling.io/t/maximum-number-of-concurrent-requests/4405/2 "2018-07-02T19:36:48Z")

</div>

AFAIK Gatling doesn’t impose a limit on requests (except, of course, if you do ti explicitly).

You’ll have to understand both client and server machines: how many network connections can OS handle, the response time, server is blocking or non-blocking, and so on.

Anyway, 30k RPS is a HUGE challenge. Best of luck with that 😛