Gatling vs Loader.io vs Locust

Need advice about which tool to choose?Ask the StackShare community!

Gatling

193
231
+ 1
17
Loader.io

68
134
+ 1
17
Locust

110
203
+ 1
28
Advice on Gatling, Loader.io, and Locust
Ratan Sharmacharya
Needs advice
on
Loader.io
and
Apache JMeter

I have a team that is not heavy on programming skills. I am looking for a load testing tool that is easy to use. Preferably, the tool should be a record and playback tool without much programming. Also, the tool should be able to test APIs apart from web-based applications. What tool should I opt for?

See more
Replies (2)
Deepak Naik
Product Owner at Digite Infotech Private Limited · | 3 upvotes · 8.7K views

My choice would be Apache JMeter, It's free and opensource plus it comes with lots of plugins and extendability. Apache JMeter needs a small amount of a learning curve and a basic understanding of Network, Protocols (TCP/IP ports, HTTP(S) and REST/SOAP, etc.) for initial setup. But it doesn't require programming skills. it has a nice record and playback option. You can still carry on without the developer skillset if you follow these steps. 1. Take backup. 2. Start recording and interact with the application. 3. stop recording and save the test case. This will give you your test-bed, after this, after these steps, every time just do Restore from backup and then Playback and observer results.

If you have longer recordings then an understanding of how to modify the recorded scripts will come handy.

For some of the advanced features such as Configuring variables, implementing loops, throttling adding think time, and automating test scaling to the number of users will require good planning of test scenarios and a Developer experience but this is true for any tool (even loader.io)

See more
Pepe Ruiz
Head of Content at k6.io · | 2 upvotes · 8.6K views
Recommends
k6

Disclaimer: I work at k6, and I recommend you try our tool.

It might require some coding skills, but we support a few options to record a user session to autogenerate the load test. Read How to record a browser session with k6 OSS.

The k6 Cloud also supports recording a user session with a Browser Extension. Additionally, it provides a Test Builder UI to generate a load test for testing APIs.

If you have questions or need help, you can ask on Slack and the Community forum.

See more
Get Advice from developers at your company using Private StackShare. Sign up for Private StackShare.
Learn More
Pros of Gatling
Pros of Loader.io
Pros of Locust
  • 5
    Great detailed reports
  • 5
    Can run in cluster mode
  • 4
    Loadrunner
  • 2
    Scala based
  • 1
    Load test as code
  • 8
    Easy to use
  • 6
    Free tier
  • 3
    Heroku add-on
  • 8
    Supports distributed
  • 5
    Easy to use
  • 4
    Open source
  • 3
    Hackable
  • 3
    Easy to setup
  • 3
    Fast
  • 2
    Test Anything

Sign up to add or upvote prosMake informed product decisions

Cons of Gatling
Cons of Loader.io
Cons of Locust
  • 2
    Steep Learning Curve
  • 1
    Hard to test non-supported protocols
  • 0
    Not distributed
    Be the first to leave a con
    • 1
      Bad design

    Sign up to add or upvote consMake informed product decisions

    - No public GitHub repository available -

    What is Gatling?

    Gatling is a highly capable load testing tool. It is designed for ease of use, maintainability and high performance. Out of the box, Gatling comes with excellent support of the HTTP protocol that makes it a tool of choice for load testing any HTTP server. As the core engine is actually protocol agnostic, it is perfectly possible to implement support for other protocols. For example, Gatling currently also ships JMS support.

    What is Loader.io?

    Loader.io is a free load testing service that allows you to stress test your web-apps/apis with thousands of concurrent connections.

    What is Locust?

    Locust is an easy-to-use, distributed, user load testing tool. Intended for load testing web sites (or other systems) and figuring out how many concurrent users a system can handle.

    Need advice about which tool to choose?Ask the StackShare community!

    What companies use Gatling?
    What companies use Loader.io?
    What companies use Locust?

    Sign up to get full access to all the companiesMake informed product decisions

    What tools integrate with Gatling?
    What tools integrate with Loader.io?
    What tools integrate with Locust?
    What are some alternatives to Gatling, Loader.io, and Locust?
    Selenium
    Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should!) also be automated as well.
    BlazeMeter
    Simulate any user scenario for webapps, websites, mobile apps or web services. 100% Apache JMeter compatible. Scalable from 1 to 1,000,000+ concurrent users.<br>
    k6
    It is a developer centric open source load testing tool for testing the performance of your backend infrastructure. It’s built with Go and JavaScript to integrate well into your development workflow.
    Cucumber
    Cucumber is a tool that supports Behaviour-Driven Development (BDD) - a software development process that aims to enhance software quality and reduce maintenance costs.
    Apache JMeter
    It is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions.
    See all alternatives
    Reviews of Gatling, Loader.io, and Locust
    Staff Software Engineer at Intuit
    Review of
    Locust

    This is the best open source tool i have ever come across which does load testing at its best.

    Python config code is really simple to write and good part is its extendable and there are many hooks available ... what else you need ..

    Lastly, the web UI to monitor your swarming activity is too good and very helpful for identify bottlenecks and spikes real-time.

    How developers use Gatling, Loader.io, and Locust
    StackShare uses
    Loader.io

    I don’t remember exactly how I heard about Loader.io. I think I was adding load testing services to Leanstack. I saw it was a SendGrid Labs project, so there would be competent people behind it. And since they had a Heroku Add-On it was easy to get started. Loader.io is cool because it’s super simple to set up.

    We have about 30 tests set up for different pages: loader.io setup

    When executing tests, you can see error rate and average response times. But we also check the Heroku logs to see if they are real errors.

    My biggest complaint: figuring out what load to set for your tests is difficult. We don’t understand the language they use and no one we’ve spoken to that has used Loader.io understands it either. We’ve been testing at 250 clients (maintain client load) for all of our tests on 2 dynos. That means a constant load of 250 people using the site over a minute, or so I thought. The number of requests at the end of the test suggests it’s more like 250 additional clients hitting the site every second for a minute. But I guess accommodating a higher load is better anyways? 250 concurrent users seems to be our average HN traffic spike so that’s why we went with that load.

    Volkan Özçelik uses
    Loader.io

    I use loader.io for distributed load testing.

    That especially matters when you have a cross-region load-balancer and you want to make sure how your app behaves on a global scale.

    theskyinflames uses
    Gatling

    Stress loading testing tool.