Reason for spike in number of active users

General discussions
1

I am running a test for 4 hours, everything seems fine but I noticed a spike in the number of active users at one point. What could be the possible reasons for it.

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2

Hello,

Can you share with me, your injection profile and your test?

3

This is my injection profile

{
setUp(scn
.injectOpen(
constantUsersPerSec(4.17).during(14400),
rampUsersPerSec(4.17).to(0).during(Duration.ofMinutes(2)))
.protocols(httpProtocol)
);
}

I am running a flow which includes 12 api.

4

It most likely matches a spike in response times, causing the users to live longer than usual.