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The Linux Podcast with Fexingo: Open Source Operating Systems, Distros, and Server Stack

The Linux Podcast with Fexingo: Open Source Operating Systems, Distros, and Server Stack

By: Fexingo
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Lucas and Luna examine the Linux ecosystem as it powers everything from cloud servers to embedded devices. They trace the evolution of major distributions — Fedora's upstream-first philosophy, Debian's stability-first governance, and the commercial strategies behind Ubuntu and RHEL — without rehashing release notes. Each episode picks one layer of the stack: the container runtime that changed deployment (Docker, Podman), the systemd debate, or why Wayland still hasn't fully replaced X11 on the desktop. They also cover real-world migrations: a startup moving from CentOS to Rocky Linux, a government agency choosing OpenSUSE Leap for long-term support, and the kernel patching workflow at a FAANG-scale datacenter. Lucas brings the command-line fluency — package managers, filesystem hierarchy, SELinux contexts — while Luna asks the questions that matter to sysadmins and developers: What breaks when you upgrade? How do you audit a distro's supply chain? Can Linux ever win the desktop without OEM deals? No fanboy evangelism, no terminal-porn demos. Listeners come for the technical depth — kernel config options, Wayland protocols, cgroups v2 — but stay for the operational judgment: which distro for a Kubernetes node, which init system for an embedded device. What does it take to run Linux at scale without burning out your ops team? #Linux #OpenSource #Technology #FexingoBusiness #BusinessPodcast #Distro #Kernel #Containerization #Docker #Podman #Systemd #Wayland #RHEL #Ubuntu #Fedora #Debian #Sysadmin #DevOps Keep every episode free: buymeacoffee.com/fexingo© 2026 Fexingo. All rights reserved. Economics
Episodes
  • How Linux KSM Is Saving Memory in Virtualized Environments

    How Linux KSM Is Saving Memory in Virtualized Environments
    Jul 4 2026
    Kernel Same-page Merging (KSM) is a Linux kernel feature that deduplicates identical memory pages across processes and virtual machines. In this episode, Lucas and Luna explore how KSM works under the hood, why it's critical for virtualized and containerized workloads, and where it falls short. They walk through a real-world example: a KVM host running 20 Ubuntu VMs that saved over 40 percent of RAM using KSM, based on benchmarks from the Linux Foundation's 2025 virtualization report. Lucas explains the trade-offs — CPU overhead versus memory efficiency — and why KSM is not a silver bullet for every scenario. They also discuss the emerging alternative, UBC (Userspace Block Compiler), and how KSM fits into the broader Linux memory management landscape. A focused, technical conversation for anyone running servers at scale. #Linux #KSM #KernelSamepageMerging #MemoryDeduplication #Virtualization #KVM #QEMU #LinuxKernel #MemoryManagement #Containerization #OpenSource #CloudComputing #DevOps #SysAdmin #Technology #FexingoBusiness #BusinessPodcast #LinuxPodcast Keep every episode free: buymeacoffee.com/fexingo
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    10 mins
  • How Linux Systemd Is Reshaping Service Management

    How Linux Systemd Is Reshaping Service Management
    Jul 4 2026
    In episode 90 of The Linux Podcast, Lucas and Luna dive into systemd - the init system that has become the backbone of modern Linux distributions. They explore why systemd sparked the great Linux civil war, how it unifies service management, logging, and timers into one framework, and what systemd 256 brings with run0 and the new service manager. Specific numbers: nearly 70% of Linux servers now use systemd, and systemd-journald reduces boot time by up to 40% compared to syslog. The hosts discuss practical tradeoffs for sysadmins and the ongoing debate about modularity versus integration. #Linux #Systemd #InitSystem #ServiceManager #LinuxAdministration #OpenSource #Technology #FexingoBusiness #BusinessPodcast #Podcast #Sysadmin #LennartPoettering #RedHat #Ubuntu #Fedora #Debian #Systemd256 #Run0 Keep every episode free: buymeacoffee.com/fexingo
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    9 mins
  • How Linux Uprobes Are Tracing User-Space Applications in Production

    How Linux Uprobes Are Tracing User-Space Applications in Production
    Jul 3 2026
    In this episode, Lucas and Luna dive into Linux uprobes — user-space probes that let engineers trace application code at runtime without recompiling. They explore how uprobes work alongside kprobes, why companies like Netflix use them to debug latency in production microservices, and a concrete example using bpftrace to trace malloc calls in a containerized app. By the end, you'll understand why uprobes are a lightweight alternative to traditional debuggers and how they enable observability in modern distributed systems. This episode is recorded on July 3, 2026, and references real-world use cases from the Linux kernel community. #Linux #Uprobes #UserSpaceProbes #KernelTracing #Observability #BPFtrace #Netflix #PerformanceDebugging #ProductionTracing #Microservices #Technology #OpenSource #LinuxKernel #DynamicTracing #Kprobes #FexingoBusiness #BusinessPodcast #TheLinuxPodcast Keep every episode free: buymeacoffee.com/fexingo
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    11 mins
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