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Graphics/Benchmarks

Linux Development, Graphics and Linux Foundation

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Graphics/Benchmarks
Linux
  • Fedora Gets An Unofficial Kernel Based On Clear Linux

    While the kernel configuration is just one part of Intel's Clear Linux optimizations for their performance-oriented distribution, a Fedora user has taken the liberty of spinning a Fedora kernel build based upon Clear Linux's kernel configuration.

  • An Idle Injection Framework Queued For Linux 4.19

    Another one of the new frameworks slated for the Linux 4.19 kernel cycle kicking off in August is for idle injection.

    Right now drivers like Intel PowerClamp and the AMD CPU cooling code insert idle CPU cycles when needed on their own, in order to keep below an intended power envelope or thermal threshold. Rather than drivers implementing idle injections on their own, the idle injection code within the Linux kernel has moved into a dedicated framework to make it easier for other kernel users to deploy.

  • IT87 Linux Driver For Supporting Many Motherboard Sensors Is Facing Death

    While Linux hardware support for desktop PCs has advanced a great deal over the years, one area that continues to struggle is support for fan/thermal/power sensors on many of today's motherboards. This area has struggled with not enough public documentation / data-sheets from ASIC vendors as well as not enough upstream Linux kernel developers being interested in the hwmon subsystem. The IT87 Linux driver for many common Super I/O chips found on countless motherboards is unfortunately facing a downfall.

  • Mesa 18.2 Gets Extra Two Weeks Of Development Time

    Serving as the Mesa 18.2 release manager is Andres Gomez of Igalia. He's now pushed back the release plan by two weeks, although Mesa 18.2.0 still should end up shipping in August.

    Rather than branching Mesa 18.2 by week's end, which begins the release candidate phase and marks the feature freeze, that deadline will be pushed back to 1 August. That means there are an extra two weeks of developers to land any desired changes into this next quarterly Mesa feature update.

  • Tips for Success with Open Source Certification

    In today’s technology arena, open source is pervasive. The 2018 Open Source Jobs Report found that hiring open source talent is a priority for 83 percent of hiring managers, and half are looking for candidates holding certifications. And yet, 87 percent of hiring managers also cite difficulty in finding the right open source skills and expertise. This article is the second in a weekly series on the growing importance of open source certification.

    In the first article, we focused on why certification matters now more than ever. Here, we’ll focus on the kinds of certifications that are making a difference, and what is involved in completing necessary training and passing the performance-based exams that lead to certification, with tips from Clyde Seepersad, General Manager of Training and Certification at The Linux Foundation.

  • Xen Project Hypervisor Power Management: Suspend-to-RAM on Arm Architectures

    About a year ago, we started a project to lay the foundation for full-scale power management for applications involving the Xen Project Hypervisor on Arm architectures. We intend to make Xen on Arm's power management the open source reference design for other Arm hypervisors in need of power management capabilities.

Kernel and Graphics: PDS, VKMS and Nouveau

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Graphics/Benchmarks
Linux
  • PDS 0.98s release

    PDS 0.98s is released with the following changes

    1. Fix compilation issue on raspberry pi.
    2. Minor rework and optimization on balance code path.
    3. Fix wrong nr_max_tries in migrate_pending_tasks.

    This is mainly a bug fix and minor optimization release for 4.17. The rework of balance code doesn't go well, it actually make more overhead than current implement. Another rework which based on current implement is still on going, hopefully be included in next release.

  • PDS-MQ CPU Scheduler Revised For The Linux 4.17 Kernel With Minor Optimizations

    Alfred Chen announced this week the release of PDS-mq 0.98s, his latest patch-set of this CPU scheduler against the Linux 4.17 upstream code-base and includes minor optimization work and bug fixes.

    The PDS scheduler stands for the "Priority and Deadline based Skiplist multiple queue scheduler" that is derived from Con Kolivas' former BFS scheduler with Variable Run Queue (VRQ) support. PDS design principles are to be a simple CPU process scheduler yet efficient and scalable. PDS-mq differs from Con Kolivas' current MuQSS scheduler.

  • Add infrastructure for Vblank and page flip events in vkms simulated by hrtimer

    Since the beginning of May 2018, I have been diving into the DRM subsystem. In the beginning, nothing made sense to me, and I had to fight hard to understand how things work. Fortunately, I was not alone, and I had great support from Gustavo Padovan, Daniel Vetter, Haneen Mohammed, and the entire community. Recently, I finally delivered a new feature for VKMS: the infrastructure for Vblank and page flip events.

    At this moment, VKMS have regular Vblank events simulated through hrtimers (see drm-misc-next), which is a feature required by VKMS to mimic real hardware [6]. The development approach was entirely driven by the tests provided by IGT, more specifically the kms_flip. I modified IGT to read a module name via command line and force the use of it, instead of using only the modules defined in the code (patch submitted to IGT, see [1]). With this modification in the IGT, my development process to add a Vblank infrastructure to VKMS had three main steps as Figure 1 describes.

  • The State Of The VKMS Driver, Preparations For vBlank & Page Flip Events

    One of the exciting additions to look forward to with the upcoming Linux 4.19 kernel cycle is the virtual "VKMS" kernel mode-setting driver. The driver is still a work-in-progress, but multiple developers are working on it.

  • NIR Continues To Be Prepped For OpenCL Support

    Longtime Nouveau contributor Karol Herbst who joined Red Hat several months ago has been working on Nouveau NIR support as stepping towards SPIR-V/compute support and this summer the work very much remains an active target.

  • Nouveau Gallium3D Moves Closer Towards OpenGL 4.5 Compliance

    While the RadeonSI and Intel i965 Mesa drivers have been at OpenGL 4.5 compliance for a while now, the Nouveau "NVC0" Gallium3D driver has been bound to OpenGL 4.3 officially.

    This Nouveau Gallium3D driver for NVIDIA "Fermi" graphics hardware and newer has effectively supported all of the OpenGL 4.4/4.5 extensions, but not officially. Originally the NVC0 problem for OpenGL 4.4 and newer was the requirement of passing the OpenGL Conformance Test Suite (CTS), which at first wasn't open-source. But now The Khronos Group has made it available to everyone as open-source. Additionally, the proper legal wrangling is in place so the Nouveau driver could become a conforming Khronos adopter under the X.Org Foundation without any associated costs/fees with Nouveau being purely open-source and primarily considered a community driver.

Comparing Latencies and Power consumption with various CPU schedulers

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Graphics/Benchmarks
Ubuntu

The low-latency kernel offering with Ubuntu provides a kernel tuned for low-latency environments using low-latency kernel configuration options. The x86 kernels by default run with the Intel-Pstate CPU scheduler set to run with the powersave scaling governor biased towards power efficiency.

While power efficiency is fine for most use-cases, it can introduce latencies due to the fact that the CPU can be running at a low frequency to save power and also switching from a deep C state when idle to a higher C state when servicing an event can also increase on latencies.

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Vulkan vs. OpenGL Performance For Linux Games

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Graphics/Benchmarks
Gaming

It has been a while since last publishing some Linux GPU driver benchmarks focused explicitly on the OpenGL vs. Vulkan performance, but that changed today with a fresh look at the performance between these two Khronos graphics APIs when tested with AMD and NVIDIA hardware on the latest RadeonSI/RADV and NVIDIA Linux graphics drivers.

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AMD Graphics: AMDKFD, AMDGPU

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Graphics/Benchmarks
Hardware
  • Raven Ridge Support Posted For AMDKFD Compute Driver

    Felix Kuehling of AMD sent out the remaining six patches for getting the AMD Raven Ridge (Ryzen APUs) working with the AMDKFD kernel compute driver so that the ROCm/OpenCL user-space compute stack can be run on these new APUs.

  • Radeon RX Vega Display Regression Fix Heading To Linux 4.18 Git

    If you have been part of the group of Radeon RX Vega Linux users trying out Linux 4.18 and finding your display no longer lights up, heading to Linux 4.18 Git should be a fix for at least some of the users.

    Sent out on Friday was a batch of AMDGPU DRM-Fixes-4.18. It's just three fixes, but two of them are pertaining to display problems and the other a segmentation fault if the GPU does not power up properly when resuming the system.

Graphics: Libinput, Mir, Wayland and Release of Mesa 18.1.4

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Graphics/Benchmarks
  • Libinput Gets Reworked Trackpoint Acceleration

    Peter Hutterer at Red Hat is trying again to get trackpoint acceleration performing nicely under the libinput library so trackpoints behave nicely across Wayland, X.Org, and Mir systems.

    Hutterer believes now that libinput's previous trackpoint acceleration code was "simply broken", but he believes this new code is on the right track and supports a wider configuration range.

  • libinput has a new trackpoint acceleration

    Just a heads-up, I just merged a branch that fixes trackpoint acceleration
    in libinput. The previous approach was simply broken, the new one is quite
    similar to what we had before anyway - calculating speed from the deltas and
    applying the acceleration curve from that. The curve is adjusted for
    trackpoints with a relatively wide configurable range.

  • Mir 0.32.1 Released With Launcher For Internal Wayland Clients, Fixes

    Canonical developers working on Mir have prepared the release of Mir 0.32.1 with a few fixes and improvements off the recent release of Mir 0.32.

    The Mir abstraction library (libmiral) now has a launcher for internal Wayland clients and the MirAL shell has reinstated the "spinner" in Wayland for when starting the shell. There are also several bug fixes pertaining to Mir's Wayland and Mesa support in this point release.

  • Wayland 1.16 & Weston 5.0 Reach Alpha

    Samsung's Derek Foreman has announced the alpha release of Wayland 1.16 as well as the Weston 5.0 reference compositor.

    As is often the case with recent Wayland releases, they are not all that large. Wayland 1.16 Alpha does away with the deprecated wl_global definition, fixes various oddities, the Wayland code generator now supports foreign enums, and updated contribution documentation.

  • mesa 18.1.4

    Hi list,

    Mesa 18.1.4 is now available for download.

    In this release we have:
    - Several fixes for i965
    - Several fixes for anv
    - A few fixes each for radeonsi, glx, the glsl compiler, the autotools build,
    nir, st/dri, and r600

    Dylan

  • Mesa 18.1.4 Released With Fixes For Intel & Radeon Drivers

    For those abiding by Mesa stable releases, Mesa 18.1.4 is now available -- in time for updating prior to any weekend Linux gaming or other activities -- for these open-source OpenGL/Vulkan driver components.

    Mesa 18.1.4 truth be told isn't all that of an exciting release, unless you happened to be affected by any of the just over two dozen fixes incorporated into this timed point release.

Windows Server 2016 vs. FreeBSD 11.2 vs. 8 Linux Distributions Performance Benchmarks

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Graphics/Benchmarks

Given the recent releases of FreeBSD 11.2, Scientific Linux 6.10, openSUSE Leap 15, and other distribution updates in the past quarter, here are some fresh benchmarks of eight different Linux distributions compared to FreeBSD 11.2 and Microsoft Windows Server 2016. The tested Linux platforms for this go-around were CentOS 7.5, Clear Linux 23610, Debian 9.4, Fedora Server 28, openSUSE leap 15.0, Scientific Linux 6.10, Scientific Linux 7.5, and Ubuntu 18.04 LTS.

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Linux Graphics: AMD and NVIDIA

Filed under
Graphics/Benchmarks
Linux
  • Vega 20 Support Added To RadeonSI Gallium3D Driver

    With the upcoming Linux 4.18 kernel release due out in August there is the AMDGPU kernel driver support for Vega 20, the yet-to-be-released Vega GPU said to be the 7nm part launching later this year in Radeon Instinct products and featuring 32GB of HBM2 and adding some new deep learning instructions. Now the RadeonSI Gallium3D user-space driver for OpenGL within Mesa has Vega 20 support.

  • NVIDIA 396.24.10 Linux Driver Brings Vulkan 8-Bit / Renderpass2 / Conditional Render

    NVIDIA developers today released the 396.24.10 driver, their latest beta driver for Linux focused on the latest Vulkan innovations and improvements and is joined by the Windows 398.58 driver.

    The NVIDIA 396.24.10 Linux driver (and 398.58 beta for Windows) are focused on delivering the functionality added with the recent Vulkan 1.1.80 specification update.

Linux Graphics: AMD and NVIDIA

Filed under
Graphics/Benchmarks
Linux
  • Vega 20 Support Added To RadeonSI Gallium3D Driver

    With the upcoming Linux 4.18 kernel release due out in August there is the AMDGPU kernel driver support for Vega 20, the yet-to-be-released Vega GPU said to be the 7nm part launching later this year in Radeon Instinct products and featuring 32GB of HBM2 and adding some new deep learning instructions. Now the RadeonSI Gallium3D user-space driver for OpenGL within Mesa has Vega 20 support.

  • NVIDIA 396.24.10 Linux Driver Brings Vulkan 8-Bit / Renderpass2 / Conditional Render

    NVIDIA developers today released the 396.24.10 driver, their latest beta driver for Linux focused on the latest Vulkan innovations and improvements and is joined by the Windows 398.58 driver.

    The NVIDIA 396.24.10 Linux driver (and 398.58 beta for Windows) are focused on delivering the functionality added with the recent Vulkan 1.1.80 specification update.

96-core NanoPi Fire3 cluster computer blows past RPi rigs in benchmarks

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Graphics/Benchmarks

Cluster computer projects are increasingly looking beyond the Raspberry Pi to build devices with faster cluster-friendly SBCs. Here’s a 96-core monster that taps the octa-core NanoPi Fire3.

Cluster computers constructed of Raspberry Pi SBCs have been around for years, ranging from supercomputer-like behemoths to simple hobbyist rigs. More recently, we’ve seen cluster designs that use other open-spec hacker boards, many of which offer higher computer power and faster networking at the same or lower price. Farther below, we’ll examine one recent open source design from Paul Smith at Climbers.net that combines 12 octa-core NanoPi-Fire3 SBCs for a 96-core cluster.

Read more

Also: Low-profile Apollo Lake Mini-ITX board runs Linux

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More in Tux Machines

Stable kernel 4.4.142

I'm announcing the release of the 4.4.142 kernel. It's not an "essencial" upgrade, but a number of build problems with perf are now resolved, and an x86 issue that some people might have hit is now handled properly. If those were problems for you, please upgrade. The updated 4.4.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.4.y and can be browsed at the normal kernel.org git web browser: http://git.kernel.org/?p=linux/kernel/git/stable/linux-st... Read more

today's leftovers

  • Ditching Windows: 2 Weeks With Ubuntu Linux On The Dell XPS 13 [Ed: sadly it's behind a malicious spywall]
  • What Serverless Architecture Actually Means, and Where Servers Enter the Picture
  • What are ‘mature’ stateful applications?
    BlueK8s is a new open source Kubernetes initiative from ‘big data workloads’ company BlueData — the project’s direction leads us to learn a little about which direction containerised cloud-centric applications are growing. Kubernetes is a portable and extensible open source platform for managing containerised workloads and services (essentially it is a container ‘orchestration’ system) that facilitates both declarative configuration and automation. The first open project in the BlueK8s initiative is Kubernetes Director (aka KubeDirector), for deploying and managing distributed ‘stateful applications’ with Kubernetes.
  • Winds – Machine Learning Powered RSS and Podcast App
    There are numerous RSS reader apps available in Linux universe, some of them are best and some of them are your native Linux apps. Not all of them are having ability to support podcast though. Winds is very beautiful RSS and podcast app based on stream API and it comes with him nice user interface and loaded with features.
  • Reaper audio editing software gets a native Linux installer
    Reaper is a powerful, versatile digital audio workstation for editing music, podcasts, or other audio projects. I’ve used it to edit and mix every single episode of the LPX podcast and Loving Project podcast. The software is also cross-platform. There 32-bit and 64-bit builds available for Windows and macOS, and there’s been an experimental Linux version for a few years.
  • Common Vision Blox 2018 with Enhanced 3D and Linux Functionality
    CVB Image Manager is the core component of Common Vision Blox and offers unrivalled functionality in image acquisition, image handling, image display and image processing. It is also included with the free CameraSuite SDK licence which is supplied with all GigE Vision or USB3 Vision cameras purchased from Stemmer Imaging. CVB 2018 Image Manager features core 3D functionality to handle point clouds and pre-existing calibrations as well as the display of 3D data. A new tool called Match 3D, which operates in both Windows and Linux, has been added. This allows a point cloud to be compared to a template point cloud, returning the 3D transformation between the two. It can be useful for 3D positioning systems and also for calculating the differences for quality control applications. The new features in CVB 2018 Image Manager have also been extended to Linux (on Intel and ARM platforms), making it even more suitable for developing solutions in embedded and OEM applications.
  • Oldest swinger in town, Slackware, notches up a quarter of a century
    Slackware, the oldest Linux distribution still being maintained, has turned 25 this week, making many an enthusiast wonder where all those years went. Mention Slackware, and the odds are that the FOSS fan before you will go a bit misty-eyed and mumble something about dependency resolution as they recall their first entry into the world of Linux. Released by Patrick Volkerding on 17 July 1993, Slackware aimed to be the most “UNIX-like” Linux distribution available and purports to be designed “with the twin goals of ease of use and stability as top priorities”. Enthusiasts downloading the distro for the first time might take issue with the former goal – the lack of a cuddly graphical installer can be jarring.
  • SDR meets AI in a mash-up of Jetson TX2, Artix-7, and 2×2 MIMO
    Deepwave Digital has launched an Ubuntu-driven, $5K “AIR-T” Mini-ITX board for AI-infused SDR, equipped with an Nvidia Jetson TX2, a Xilinx Artix-7 FPGA, and an AD9371 2×2 MIMO transceiver.
  • 8BitDo’s DIY Kit Can Turn Your Fave Retro Gamepad into a Wireless Steam Controller
    The “8BitDo Mod Kit” is a DIY package that gives you everything you need to convert an existing wired game pad for the NES, SNES, or Sega Mega Drive/Genesis systems into a fully-fledged wireless controller. A wireless controller you could then use with Ubuntu. No soldering is required. You just unscrew the case of an existing controller and the PCB inside and replace it with the one included in the mod kit. Screw it all back up and, hey presto, wireless gaming on a classic controller. Modded controllers are compatible with Steam on Windows and macOS (one assumes Linux too), as well the Nintendo Switch, and the Raspberry Pi — that’s a versatility classic game pads rarely had!
  • Are These a Risky Play with big payoff? PayPal Holdings, Inc. (PYPL) and Red Hat, Inc. (RHT)
  • How These Stocks Are Currently Valued TechnipFMC plc (FTI), Red Hat, Inc. (RHT)?
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Kernel: Linux 4.19 and LWN Coverage Unleashed From Paywall

  • Linux 4.19 To Feature Support For HDMI CEC With DP/USB-C To HDMI Adapters
    Adding to the big batch of feature additions and improvements queuing in DRM-Next for the upcoming Linux 4.19 kernel merge window is another round of drm-misc-next improvements. While the drm-misc-next material consists of the random DRM core and small driver changes not big enough to otherwise warrant their own individual pull requests to DRM-Next, for Linux 4.19 this "misc" material has been fairly exciting. Last week's drm-misc-next pull request introduced the Virtual KMS (VKMS) driver that offers exciting potential. With this week's drm-misc-next pull are further improvements to the VKMS code for frame-buffer and plane helpers, among other additions.
  • Nouveau Changes Queue Ahead Of Linux 4.19
    Linux 4.19 is going to be another exciting kernel on the Direct Rendering Manager (DRM) front with a lot of good stuff included while hours ago we finally got a look at what's in store for the open-source NVIDIA "Nouveau" driver. Nouveau DRM maintainer Ben Skeggs of Red Hat has updated the Nouveau DRM tree of the latest batch of patches ahead of sending in the pull request to DRM-Next. As has been the trend in recent times, the Nouveau DRM work mostly boils down to bug/regression fixes.
  • IR decoding with BPF
    In the 4.18 kernel, a new feature was merged to allow infrared (IR) decoding to be done using BPF. Infrared remotes use many different encodings; if a decoder were to be written for each, we would end up with hundreds of decoders in the kernel. So, currently, the kernel only supports the most widely used protocols. Alternatively, the lirc daemon can be run to decode IR. Decoding IR can usually be expressed in a few lines of code, so a more lightweight solution without many kernel-to-userspace context switches would be preferable. This article will explain how IR messages are encoded, the structure of a BPF program, and how a BPF program can maintain state between invocations. It concludes with a look at the steps that are taken to end up with a button event, such as a volume-up key event. Infrared remote controls emit IR light using a simple LED. The LED is turned on and off for shorter or longer periods, which is interpreted somewhat akin to morse code. When infrared light has been detected for a period, the result is called a "pulse". The time between pulses when no infrared light is detected is called a "space".
  • The block I/O latency controller
    Large data centers routinely use control groups to balance the use of the available computing resources among competing users. Block I/O bandwidth can be one of the most important resources for certain types of workloads, but the kernel's I/O controller is not a complete solution to the problem. The upcoming block I/O latency controller looks set to fill that gap in the near future, at least for some classes of users. Modern block devices are fast, especially when solid-state storage devices are in use. But some workloads can be even faster when it comes to the generation of block I/O requests. If a device fails to keep up, the length of the request queue(s) will increase, as will the time it takes for any specific request to complete. The slowdown is unwelcome in almost any setting, but the corresponding increase in latency can be especially problematic for latency-sensitive workloads.

Microsoft's Lobbying Campaign for Android Antitrust Woes

  • Google Hints A Future Where Android Might NOT Be Free
  • Android has created more choice, not less
  • Google Fined Record $5 Billion by EU, Given 90 Days to Stop ‘Illegal Practices’

    EU regulators rejected arguments that Apple Inc. competes with Android, saying Apple’s phone software can’t be licensed by handset makers and that Apple phones are often priced outside many Android users’ purchasing power.

  • EU: Google illegally used Android to dominate search, must pay $5B fine

    Thirdly, Google allegedly ran afoul of EU rules by deterring manufacturers from using Android forks. Google "has prevented manufacturers wishing to pre-install Google apps from selling even a single smart mobile device running on alternative versions of Android that were not approved by Google," the commission said.

  • EU hits Google with US$5b fine over alleged Android misuse

    The European Union has hit Google with a second fine in as many years, demanding that the search behemoth pay €4.34 billion (US$5.05 billion, A$6.82 billion) for breaching anti-trust rules over its Android mobile operating system.

    Announcing the fine on Wednesday in Brussels, the EU said Google must end such conduct within 90 days or pay a penalty of up to 5% of the average daily turnover of its parent company, Alphabet.

    The company has said it will appeal against the fine.

  • iPhone users buy half as many apps as Android users, but spend twice as much

    Apple's app store is still yielding twice the revenue of Google Play, and yet is only recording half the number of downloads.

    The figures for Q1&2 of the year suggest Apple owners spent $22.6bn on apps, whilst Android users only spent $11.8bn.

  • The EU fining Google over Android is too little, too late, say experts

    The Play Store is free to use under licence from Google, but comes with a set of conditions smartphone manufacturers must meet. The most important of these, and the one the EC has a problem with, is the requirement to set Google as the default search engine and the pre-installation of certain apps, including Google Chrome, YouTube and the Google search app. Google also dictates that some of the pre-installed apps be placed on the homescreen.

  • Don’t Expect Big Changes from Europe’s Record Google Fine

    The decision by the European Commission, the EU’s regulatory arm, found that Google manages Android, which runs roughly 80 percent of the world’s smartphones, in ways that illegally harm competition. The ruling focused on three practices: the bundling of Google's Chrome web browser and its search app as a condition for licensing the Google Play store; payments Google makes to phone manufacturers and telecom companies to exclusively preinstall the Google search app on their devices; and Google's practice of prohibiting device makers from running Google apps on Android “forks,” or alternative versions of the software unapproved by Google. In its ruling, the commission ordered Google to stop all of those practices.