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Kernel: CPU Defects, WireGuard in Linux, Secure Virtual Machine (SVM), Performance and Scalability Systems Microconference

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Linux
  • A Global Switch To Kill Linux's CPU Spectre/Meltdown Workarounds?

    Something I have seen asked in our forums and elsewhere -- most recently on the kernel mailing list -- is whether there is a single kernel option that can be used for disabling all of the Spectre/Meltdown workarounds and any other performance-hurting CPU vulnerability workarounds.

    With many of the mitigation patches for these speculative execution vulnerabilities hitting many processors these days, there's often a measurable "performance tax" associated with them. Fortunately, for most of the mitigations they can be disabled at run-time via various options.

  • WireGuard Takes Another Step Towards The Mainline Linux Kernel

    Jason Donenfeld who has now spent years working on WireGuard as an in-kernel, secure network tunnel sent out a second version of his kernel patches on Friday.

    At the end of July he sent out the initial kernel patches for review and following that month worth of feedback he now has V2. The revised work includes splitting up some of the Zinc crypto code, code clean-ups, and other low-level improvements to this code.

  • IBM Posts Initial Patches For Linux Secure Virtual Machine On POWER

    IBM developers on Friday posted their initial Linux kernel patches for enabling Secure Virtual Machine (SVM) support with POWER hardware.

    These "request for comments" patches are their preliminary work on supporting Secure Virtual Machines on POWER.. The goal is on making the guest's memory inaccessible to the hypervisor, similar to the work done by AMD for EPYC CPUs with Secure Encrypted Virtualization and as well some work by Intel for their CPUs.

  • Performance and Scalability Systems Microconference Accepted into 2018 Linux Plumbers Conference

    Core counts keep rising, and that means that the Linux kernel continues to encounter interesting performance and scalability issues. Which is not a bad thing, since it has been fifteen years since the “free lunch” of exponential CPU-clock frequency increases came to an abrupt end. During that time, the number of hardware threads per socket has risen sharply, approaching 100 for some high-end implementations. In addition, there is much more to scaling than simply larger numbers of CPUs.

  • Quickly & Easily Running Benchmarks On Docker With "phoronix/pts"

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.