Performance and Load Test Tools

ApacheBenc (ab)

locust

Python-based load testing

K6

JS-based load testing

Installation

$ sudo gpg -k

$ sudo gpg --no-default-keyring --keyring /usr/share/keyrings/k6-archive-keyring.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys C5AD17C747E3415A3642D57D77C6C491D6AC1D69
echo "deb [signed-by=/usr/share/keyrings/k6-archive-keyring.gpg] https://dl.k6.io/deb stable main" | sudo tee /etc/apt/sources.list.d/k6.list

$ sudo apt-get update

$ sudo apt install k6 -y

Basic usage

Just create a new ‘.js’ file:

import http from 'k6/http';
import { check, sleep } from 'k6';

export const options = {
  vus: 10, // Virtual Users
  duration: '30s', // Test runs for 30 seconds
};

export default function () {
  const res = http.get('https://<TARGET_DOMAIN>');

  check(res, {
    'status is 200': (r) => r.status === 200,
    'response time < 500ms': (r) => r.timings.duration < 500,
  });

  sleep(1); // wait 1 second between each request
}

Run:

$ k6 run test.js

 k6 run test.js

         /\      Grafana   /‾‾/
    /\  /  \     |\  __   /  /
   /  \/    \    | |/ /  /   ‾‾\
  /          \   |   (  |  (‾)  |
 / __________ \  |_|\_\  \_____/

     execution: local
        script: test.js
        output: -

     scenarios: (100.00%) 1 scenario, 10 max VUs, 1m0s max duration (incl. graceful stop):
              * default: 10 looping VUs for 30s (gracefulStop: 30s)


     ✗ status is 200
      ↳  17% — ✓ 50 / ✗ 230
     ✓ response time < 500ms

     checks.........................: 58.92% 330 out of 560
     data_received..................: 8.6 MB 281 kB/s
     data_sent......................: 45 kB  1.5 kB/s
     http_req_blocked...............: avg=21.52ms  min=241ns    med=1.45µs  max=607.88ms p(90)=2.47µs   p(95)=3.75µs
     http_req_connecting............: avg=1.65ms   min=0s       med=0s      max=47.79ms  p(90)=0s       p(95)=0s
     http_req_duration..............: avg=59.75ms  min=35.99ms  med=51.4ms  max=208.98ms p(90)=88.55ms  p(95)=106ms
       { expected_response:true }...: avg=79.35ms  min=36.44ms  med=57.61ms max=208.98ms p(90)=176.77ms p(95)=183.93ms
     http_req_failed................: 82.14% 230 out of 280
     http_req_receiving.............: avg=8.08ms   min=116.69µs med=4.71ms  max=47.73ms  p(90)=20.02ms  p(95)=23.43ms
     http_req_sending...............: avg=213.08µs min=58.44µs  med=183µs   max=2.8ms    p(90)=309.89µs p(95)=368.7µs
     http_req_tls_handshaking.......: avg=6.64ms   min=0s       med=0s      max=188.73ms p(90)=0s       p(95)=0s
     http_req_waiting...............: avg=51.45ms  min=31.57ms  med=41.78ms max=204.25ms p(90)=71ms     p(95)=92.32ms
     http_reqs......................: 280    9.13127/s
     iteration_duration.............: avg=1.08s    min=1.03s    med=1.05s   max=1.81s    p(90)=1.08s    p(95)=1.1s
     iterations.....................: 280    9.13127/s
     vus............................: 10     min=10         max=10
     vus_max........................: 10     min=10         max=10


running (0m30.7s), 00/10 VUs, 280 complete and 0 interrupted iterations
default ✓ [======================================] 10 VUs  30s

Add

export const options = {
  stages: [
    { duration: '30s', target: 10 }, // ramp up to 10 users
    { duration: '1m', target: 10 },  // stay at 10 users
    { duration: '30s', target: 0 },  // ramp down
  ],
};

Add Credentials (username and password)

import http from 'k6/http'
import { check, sleep } from 'k6'

export default function () {
  const data = { username: 'username', password: 'password' }
  let res = http.post('https://<TARGET_DOMAIN>', data)

  check(res, { 'success login': (r) => r.status === 200 })

  sleep(0.3)
}

Testing Multiple Endpoints

import http from 'k6/http';
import { check } from 'k6';

export default function () {
  const responses = http.batch([
    ['GET', 'https://<TARGET_DOMAIN_1>'],
    [
      'POST',
      'https://<TARGET_DOMAIN_2>',
      JSON.stringify({ username: 'username', password: 'password' }),
      { headers: { 'Content-Type': 'application/json' } },
    ],
  ]);

  // Validate multiple endpoint responses
  check(responses[0], {
    'GET request successful': (r) => r.status === 200,
  });
  check(responses[1], {
    'POST login successful': (r) => r.status === 200,
  });
}