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Load Testing Blog

Extend OctoPerf results with Instana

Today we have a look at the added value you get by using a combination of load testing and APM. Our tool of choice at OctoPerf is Instana, because we share a lot of common values. To put it short we both have a huge focus on ease of use and docker oriented platforms. I think it makes this collaboration even more relevant for our users.

Anyway, as you probably know OctoPerf is oriented toward running realistic tests as easily as possible. And Instana will get you live insight about your entire platform allowing you to instantly understand the consequences of your load test. This blog post is a collaboration with folks at Instana and you can find the second part whith a detailed analysis of the test on their blog.

  • in JMeter
  • 6 min read

JMeter If Controller

You may ask yourself:

  • How can I script Thread groups with dynamic behavior?
  • How to use the JMeter If Controller to leverage conditional behavior?

Good News! We're going to show you the JMeter If Controller by introducing you to conditional statements, advanced conditions and performance considerations.

Use-Cases

The If Controller works great when you need to execute some elements of the Thread Group based on a given state. Let me give you meaningful examples:

  • If the shopping cart is empty, then execute Add a New Product to Cart,
  • If Account balance is below Zero, then Issue a wire transfer to rebalance the Account.

Depending on a given condition, then a given action is taken. That's it!

  • in JMeter
  • 10 min read

Performance Test Strategy

A long time ago, Quality Assurance was executed after development. Performance testing was an activity executed when software was ready for production.

If a performance issue was found, most companies:

  • Fix the issue which means a complete new cycle including QA Tests and performance tests are required,
  • Or put the software live and decided to fix it as part of ongoing development,
  • Or borrow from the future. That's technical debt.

Let’s be fair: this approach isn't optimal.

The root cause is performance testing is not considered viable until the software reached a certain level of maturity.

The DevOps approach is exactly the opposite: performance test early.

It is known as shift left performance testing and it works it just needs Quality Assurance teams to think a little differently when it comes to performance testing and to have a performance test strategy in place to support shift left performance testing.

Let’s explore how to integrate load testing as part of your software development strategy.

OctoPerf 10.4.0 - Better Insights on Errors

We've received a lot of feedback around the way we report errors during the tests. First we only stored the first 100 errors per load generator to avoid having too many. And because of this, many of you were not able to analyse issue happening after a while. This can be frustrating if you want to understand what's going on at that stage. That's the reason behind the two main features of this release:

Improvements

Area chart

It does not only work for errors but it's probably going to be the main use case. This new addition to the report items family will show the percentage/count of the various HTTP/S codes over time:

Area chart

How we tripled our conversion rate?

OctoPerf is a SaaS load testing solution.

A load test simulates a number of predefined virtual users, to validate the application for an expected load of concurrent users. Applications tested range from company intranets to e-commerce websites. This type of test makes it possible to highlight the sensitive and critical points of a technical architecture. It also allows measuring the impact on the servers, the bandwidth required on the network, etc.

Graphical Debt

A load test campaign is usually divided in three steps:

  1. Designing the behavior of the simulated virtual users on the application under test,
  2. Configuring the runtime scenario properties (number of concurrent visitors, locations, browser and network used, etc.),
  3. Analysing the test results to pinpoint potential performance bottlenecks.

When we released the first version of OctoPerf back in 2015 it had far less features than it has today. The GUI was pretty simple and displayed these three steps in a single page, making it obvious for load testers that they had to go from design to runtime to analysis.

First version of OctoPerf's GUI