Blog

Load Testing Blog

JMeter Properties: Configurable Test Plans

Jmeter Jan 14, 2019

An in-depth look at the benefits of using JMeter properties to create configurable test plans.


Your company probably runs JMeter test plans on a regular basis. Tests constantly need to be adjusted to change settings like concurrent users or test duration. Editing the JMX is time consuming and error prone. It’s painful, especially if you run test using Continuous Integration as part of a Shift-Left strategy. Thankfully, there is a way! Let me guide you through all the options to design flexible JMeter test plans using configurable properties.

Networking with OctoPerf 9.6

Networking with OctoPerf 9.6

Innovation Nov 27, 2018

A big focus on the network with this new version of OctoPerf with enhanced proxy support and IP spoofing as the key features.


Since our last post about OctoPerf 9.4, we’ve been working on a lot of different subjects. As usual, you can find all the details in our changelog, but let’s have a look at the key improvements. IP Spoofing IP Spoofing is a technique used to impersonate another computing system. In performance testing it is interesting when you face a load-balancer or anti DDOS mechanism that requires each virtual user to have a different IP.

Asus G701VI: Unlock Hidden Bios Settings

Asus G701VI: Unlock Hidden Bios Settings

Devops Nov 20, 2018

Install Ubuntu on an Asus ROG. This step-by-step guide explains how to unlock Asus G701VI Bios using AMIFlash and AMIBCP .


Have you ever been stuck trying to install Ubuntu on the Asus Rog G701VI? With the default bios, You can’t. It’s not your fault: the Sata controller is stuck in Raid using Intel RST. How does the issue look like? Usually, when trying to install Ubuntu, you simply won’t see any disk installed on the system (despite there is physically one or more). That’s a shame if, like us, you’re a software developer.

Thinkpad T440p Ultimate Buyer's Guide

Thinkpad T440p Ultimate Buyer's Guide

Devops Nov 7, 2018

I’ve compiled all Thinkpad T440p mods, hardware upgrades and software tweaks in one single always up-to-date post.


Like most people, I like fast laptops. But damn, those can be really expensive! Is there an alternative? The short answer is: Yes. Unknown to most people, the Thinkpad T440p is a classic business laptop made in November 2013 (5 years!) by Lenovo. It’s one of the most customizable Thinkpad T Series I’ve ever seen! Let’s see how we can mod and upgrade a used T440p to build a cheap but powerful laptop (about 500€) that can match nowadays high-end laptop performance.

Starwest 2018: Our Feedback

Starwest 2018: Our Feedback

Events Nov 5, 2018

Our feedback on Starwest Expo in Anaheim (Loas Angeles area, Ca). We had a great time there and we hope to see our european customers at the eurostar!


Starwest was the third and the last stage of our American Expo tour. Last, but not least, Starwest is known for being one of the largest conference and expo in the Software testing industry. Like past year, the 2018 edition was organized in Anaheim, California, at the Disney convention center. Techwell is behind the organization of this main event. Quite a long trip for us to fly from south of France to the west coast.

Thinkpad T460: Fiddling with macOS

Thinkpad T460: Fiddling with macOS

Devops Oct 22, 2018

Learn how to install and configure MacOS on the Lenovo Thinkpad T460.


The Lenovo Thinkpad T460 is a powerful 14-inches ultrabook. What makes this laptop attractive is not only the robust design but also its ability to be a great hackintosh. This Step-by-step guide will thouroughly explain how to install and configure MacOS High Sierra on the Lenovo T460 using Clover EFI Bootloader. I would like to thank @tluck for his excellent guide which served as the source of this tutorial.

JMeter 5 and OctoPerf 9.4

JMeter 5 and OctoPerf 9.4

Innovation Sep 26, 2018

A new version of JMeter means a new version of OctoPerf. And for good measure we’ve added a couple of other features on top of it.


JMeter 5 is out, be the first to test with it from the cloud with OctoPerf! Integration of JMeter 5 This brand new version of JMeter brings a lot of new features and fixes. As usual we’ve worked hard to migrate all our load generators to JMeter 5 as fast as possible. Compatibility with previous scripts is still guaranteed since the number of core changes remains small. Results tree The result tree is a long awaited feature displaying statistics for your entire user tree: This way you can quickly tell where the time is spent or see if you have a high error rate on a particular step.

Elasticsearch: Optimization Guide

Elasticsearch: Optimization Guide

Development Sep 21, 2018

After using Elasticsearch for several years in production, we’re sharing our hardware and software best practices to squeeze every bit of performance out of your cluster.


You may already have setup an Elasticsearch cluster but you’re struggling with numerous issues: Indexing is slow: somehow you’re not getting the ingestion performance you expected, Out of Memory: your nodes are regularly hitting the Java Xmx mark and you don’t know why, all CPU cores are not used: somehow you are struggling to vertically scale the database to take advantage of multiple CPU cores, and much more. After spending several years maintaining, upgrading and tweaking Elasticsearch, we’ve learnt a lot of things along the way.

Acer Predator Helios 500 Mods

Acer Predator Helios 500 Mods

Development Sep 2, 2018

Learn how to mod the Acer Predator Helios 500 Bios, Undervolt the CPU and run alternative Operating System like Ubuntu 18.04LTS or newer.


Finally a guide to learn you how to get the most out of your Acer Predator Helios 500 Laptop! I’ve spent a lot of time figuring out all the tweaks described below. This post describes: Why I chose the Acer Predator Helios 500, How to install and run Ubuntu 18.04LTS (generally speaking Linux) smoothly, Undervolting the CPU: A whopping Free 30% CPU Performance Gain while running at cooler temperatures, How to disassemble the Helios 500: access CPU, motherboard, RAM sticks, bios chip, NVMe drives and more hardware, Disconnecting the HDD and battery: I don’t use them but would like to preserve them, And Modding the BIOS: unlock hidden settings to tweak your system even further (like RAM overclocking or increasing Turbo Boost Time).

Summertime update: OctoPerf 9.2

Summertime update: OctoPerf 9.2

Innovation Jul 13, 2018

Another batch of quality of life features in OctoPerf, including using your own AWS or DO account to autostart/stop load agents.


Wondering what’s new in OctoPerf? You’ve come to the right place. Don’t worry I know you have plans for summer so I will keep it short. New Features Private hosts OctoPerf now allows using your own Amazon Web Services or Digital Ocean account. This way OctoPerf will automatically start the load generators for you in your private cloud. And of course we will start them on demand and stop them once the test is finished.