Performance Testing 101

(workshop)

MARIE CRUZ

 

Developer Advocate at k6.io

@mcruzdrake | testingwithmarie.com

@mcruzdrake | testingwithmarie.com

WORKSHOP PREREQUISITES

  • FREE K6 ACCOUNT AT https://app.k6.io/account/register
  • Google Chrome installed in your laptops

@mcruzdrake | testingwithmarie.com

@mcruzdrake | testingwithmarie.com

@mcruzdrake | testingwithmarie.com

@mcruzdrake | testingwithmarie.com

@mcruzdrake | testingwithmarie.com

@mcruzdrake | testingwithmarie.com

Performance Testing

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activity:

 

why is it important to test for performance?

 

DO YOU HAVE EXAMPLES WHERE YOU'VE BEEN FRUSTRATED BY A WEBSITE'S PERFORMANCE?

 

(10 mins)

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Performance Testing

FRONT END/CLIENT SIDE

BACK END/SERVER SIDE

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PERFORMANCE TESTING and LOAD TESTING

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load testing

SMOKE TESTING

SOAK TESTING

STRESS TESTING

LOAD TESTING

SPIKE TESTING

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SMOKE TESTING

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LOAD TESTING

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STRESS TESTING

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SPIKE TESTING

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SOAK TESTING

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WORKSHEET ACTIVITY

(5 MINS)

THE GOLDEN RULE OF WEB PERFORMANCE

80-90% of the load time of a web page or application is spent in the frontend.

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Resource: Steve Souders

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Resource: k6.io

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IT'S METRICS TIME!

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PERFORMANCE TESTING METRICS

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CPU UTILISATION

MEMORY UTILISATION

LATENCY

NUMBER OF CONCURRENT VIRTUAL USERS (VUS)

RESPONSE TIME

FAILURE RATE

REQUEST TIME

THROUGHPUT

@mcruzdrake | testingwithmarie.com

K6

FRONT END/CLIENT SIDE

1. First Contentful Paint

2. Large Contentful Paint

 

4. Time to Interactive

5. Total Blocking Time

6. Cumulative Layout Shift

3. Speed Index

 

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WORKSHEET ACTIVITY

(5 MINS)

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HOW TO GET STARTED?

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performance vs performance insights tab

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HANDS-ON ACTIVITY

(10 MINS)

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K6

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@mcruzdrake | testingwithmarie.com

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

export const options = {
  stages: [
    { duration: '30s', target: 20 },
    { duration: '1m30s', target: 10 },
    { duration: '20s', target: 0 },
  ],
};

export default function () {
  const res = http.get('https://httpbin.test.k6.io/');
  check(res, { 'status was 200': (r) => r.status == 200 });
  sleep(1);
}

K6 as code

K6 browser recorder

@mcruzdrake | testingwithmarie.com

@mcruzdrake | testingwithmarie.com

@mcruzdrake | testingwithmarie.com

HANDS-ON ACTIVITY

(20 MINS)

@mcruzdrake | testingwithmarie.com

SUMMARY

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  1. FRONTEND AND BACKEND PERFORMANCE TESTING ARE EQUALLY AS IMPORTANT.
  2. PERFORMANCE TESTING IS NOT JUST ABOUT LOAD TESTING.
  3. IF YOU CAN'T MEASURE IT, YOU CAN'T IMPROVE IT.
  4. LEVERAGE TOOLS SUCH AS LIGHTHOUSE FOR FRONTEND AND K6 FOR BACKEND.

@mcruzdrake | testingwithmarie.com

MARIE CRUZ

 

Developer Advocate at k6.io

@mcruzdrake | testingwithmarie.com

Performance Testing 101

(workshop)

Performance Testing 101 - 99 Minutes Workshop

By Marie Cruz

Performance Testing 101 - 99 Minutes Workshop

  • 1,158