Linux

Prelude This is a followup from my previous post and a sort of continuation on the series of the topic, where we are exploring ways to make our test system more “unreliable” in order to observe if our applications behave nicely under challenging and not-ideal environments. In this article we are going to explore some linux technologies: Network Namespaces (netns) Virtual Ethernet Devices (veth) Network Emulation (netem) scheduling policy The goal is to setup a virtual network link inside our system, make the two network devices talk each other and then simulate a bad/slow/glitchy/flaky communication to test how applications behave under difficult conditions....

“You sound like a broken record” Is something we complain when someone repeats again and again the same concepts. But even broken disks can sometime be useful DISCLAIMER: No filesystem or device were harmed in the making of this experiment 😉 Image credits: Mick Haupt In this article I would like to explore the powerful tools we have in Linux to simulate dealing with broken disks, that is, drives that more or less randomly report errors....

Intro 🚌 D-Bus is a message bus system and standard for inter-process communication, mostly used in Linux desktop applications. Both Qt and GLib have high-level abstractions for D-Bus communication, and many of the desktop services we rely on export D-Bus protocols. Also the omnipresent systemd can be only interfaced via D-Bus API. However, D-Bus has its shortcomings — namely a lack of documentation. In this article we’ll explore how to write our own D-Bus Service in Rust and connect it to our D-Bus client....

The Good 😇 Today I decided to submit an openSUSE package update for the nim compiler. It went almost all well but unfortunately I faced a problem: on the i586 platform it fails to build. ...