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Linux Kernel and Graphics: Jprobes, Performance Analysis in Linux, AMDGPU, UHD Graphics and Vulkan

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Graphics/Benchmarks
Linux
  • An end to jprobes

    "Jprobes" are an ancient kernel mechanism used to trace entry into kernel functions; they were described in this 2005 LWN article.

  • Performance analysis in Linux (continued)

    This blog post is based on the talk I gave at the Open Source Summit North America 2017 in Los Angeles. Let me start by thanking my employer Collabora, for sponsoring my trip to LA.

    Last time I wrote about Performance Assessment, I discussed how an apparently naive code snippet can hide major performance drawbacks. In that example, the issue was caused by the randomness of the conditional branch direction, triggered by our unsorted vector, which really confused the Branch Predictor inside the processor.

  • AMDGPU's DC Gets More Cleanups Ahead Of Linux 4.15

    It's indeed looking like the AMDGPU DC display code stack will finally be pulled for the Linux 4.15 merge window, assuming Linus Torvalds has no issues with it in a few weeks.

    Alex Deucher of AMD today sent in a secondary AMDGPU DC update for staging alongside DRM-Next of this new display code.

  • Running OpenCL With Intel UHD Graphics On Coffeelake Under Ubuntu Linux

    After running some basic OpenCL/Vulkan UHD Graphics tests yesterday using the brand new Core i7 8700K "Coffee Lake" processor, I next ventured into OpenCL computing with the UHD Graphics using Intel's open-source Beignet CL implementation.

  • VK_KHR_maintenance2 Lands For RADV, Other Improvements

    VK_KHR_maintenance2 is the latest extension supported by this open-source Radeon Vulkan driver. VK_KHR_maintenance2 was added in Vulkan 1.0.61 last month as various changes that were previously left out of Vulkan.

  • Intel UHD Graphics 630 "Coffee Lake" On Linux

    This morning I delivered the initial Linux processor benchmarks of the Core i7 8700K and Core i5 8400 for the just-launched "Coffee Lake" desktop processors. With these Intel "Gen 8" processors, the integrated "HD Graphics" from Kabylake have been rebranded to "UHD Graphics". While there wasn't any real changes architecturally to the graphics hardware, right now the Linux support isn't quite out-of-the-box.

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More in Tux Machines

Oracle Adds Initial Support for Linux Kernel 4.14 LTS to VirtualBox

Oracle recently updated their VirtualBox open-source and cross-platform virtualization software with initial support for the latest Linux 4.14 LTS kernel series. VirtualBox 5.2.2 is the first maintenance update to the latest VirtualBox 5.2 stable series of the application, and it looks like it can be compiled and used on GNU/Linux distribution running the recently released Linux 4.14 LTS kernel. It also makes it possible to run distros powered by Linux kernel 4.14 inside VirtualBox VMs. Read more

Today in Techrights

today's leftovers

  • How a Linux stronghold turned back to Windows: Key dates in Munich's LiMux project [Ed: This explains the progression of Microsoft's war on GNU/Linux, typically using proxies]
    The project is temporarily put on hold while a study investigates whether it could be derailed by software patents.
  • End of an open source era: Linux pioneer Munich confirms switch to Windows 10 [Ed: Microsoft paid (bribed) all the right people, got a Microsoft fan -- by his own admission -- in power, gifted him for this]
    Mayor Dieter Reiter said there's never been a unified Linux landscape in the city. "We always had mixed systems and what we have here is the possibility of going over to a single system. Having two operating systems is completely uneconomic.
  • Ubuntu Podcast: S10E38 – Soft Knowledgeable Burn
    This week we refactor a home network, discuss how gaming on Linux has evolved and grown in recent years, bring you a blend of love and go over your feedback.
  • Live ISOs for Slackware-current 20171122
    I have released an update of the ‘liveslak‘ scripts. I needed the tag for a batch of new ISO images for the Slackware Live Edition. These are based on the latest Slackware-current dated “Wed Nov 22 05:27:06 UTC 2017“) i.e. yesterday and that means, the ISOs are going to boot into the new 4.14.1 kernel.
  • Am I willing to pay the price to support ethical hardware?
    The planned obsolescence is even worse with tablets and smartphones, whose components are all soldered down. The last tablet with a removable battery was the Dell Venue 11 Pro (Haswell version) announced in October 2013, but it was an expensive Windows device that cost as much as a mid-range laptop. The last Android tablet with a removable battery was the Samsung Galaxy Note 10.1 (GT-N8000 series), released in August 2012. It is still possible to find mid-range smartphones with removable batteries. Last year the only high end phones with removable batteries were the LG G5 and V20, but even LG has given up on the idea of making phones that will last longer than 2 years once the battery starts to degrade after roughly 500 full charge and discharge cycles. Every flagship phone introduced in 2017 now has its battery sealed in the case. According to the gmsarena.com database, the number of new smartphone models with non-replaceable batteries grew from 1.9% in 2011 to 26.7% in 2014, and now to 90.3% in 2017. It is highly likely that not a single model of smartphone introduced next year will have a replaceable battery.

More Coverage of New Lumina Release

  • Lumina 1.4 Desktop Environment Released
    The TrueOS BSD folks working on their Qt5-powered Lumina Desktop Environment have issued a new feature update of their open-source desktop.
  • Lumina Desktop 1.4.0 Released
    Lumina 1.4.0 carries a number of changes, optimisations, and feature improvements. Lumina is the default desktop of TrueOS, a BSD-based operating system. The desktop itself is lightweight, modular, built using Qt, and uses Fluxbox for window management. Although Lumina is mostly aimed at BSD users it also runs on Linux, including Fedora, Arch and — *mario coin sfx* — Ubuntu.