Different load performance between K6 and Postman

Grafana k6
1

HI everyone!
I wrote the stress test for download static file:

scenarios: {
    contacts: {
        executor: 'constant-vus',
        vus: 100,
        duration: '10m',
    }
},

and got result at K6:

image
image1523×463 104 KB

When I ran this test from Postman I got another result:

chrome_crashpad_handler
chrome_crashpad_handler1959×758 104 KB

As we see,
K6 shows 90th = 5,47s
Postman shows 90th = 215ms

And I don’t know why

3

Hi @kiberhetik, sorry for the slow reply, and welcome to the community forum! :tada:

Can you provide some more info on what the script that you are running is and what your postman configuration is?

Do you run them both locally?