Language Selection

English French German Italian Portuguese Spanish

About Tux Machines

Friday, 24 May 19 - Tux Machines is a community-driven public service/news site which has been around for over a decade and primarily focuses on GNU/LinuxSubscribe now Syndicate content

Search This Site

Kernel: Wayland, NVIDIA and Linux Development (LWN)

Filed under
Graphics/Benchmarks
Linux
  • Problems Being Investigated Under Wayland Itches Program, Including Gaming Performance

    Last week we wrote about a "Wayland Itches" program being devised by prolific open-source contributor Hans de Goede of Red Hat. The goal of this program is to address itches/paper-cuts/problems in using GNOME Shell atop Wayland. He's received a fair amount of feedback so far and has some early indications to share.

    Hans de Goede wrote two blog posts today outlining the early feedback to his Wayland Itches project. Two items he is going to look into initially are middle-click on title/header bar to lower the Window not working for native applications and sudo/pfexec not working on Wayland. For the sudo/pfexec support, Hans is planning to optionally support the ability for GUI apps to connect when running as root. That was rejected upstream before but his plan is for this to be an optional feature for enabling the xauth file for allowing XWayland as root by GNOME-Shell/Mutter.

  • NVIDIA 418.52.07 Linux Driver Wires In Two More Extensions

    NVIDIA today released the 418.52.07 Linux driver as an updated build intended for Vulkan developers with it introducing support for two more extensions.

  • BPF: what's good, what's coming, and what's needed

    The 2019 Linux Storage, Filesystem, and Memory-Management Summit differed somewhat from its predecessors in that it contained a fourth track dedicated to the BPF virtual machine. LWN was unable to attend most of those sessions, but a couple of BPF-related talks were a part of the broader program. Among those was a plenary talk by Dave Miller, described as "a wholistic view" of why BPF is successful, its current state, and where things are going.

    Years ago, Miller began, Alexei Starovoitov showed up at a netfilter conference promoting his ideas for extending BPF. He described how it could be used to efficiently implement various types of switching fabric — any type, in fact. Miller said that he didn't understand the power of this idea until quite a bit later.

  • The first half of the 5.2 merge window

    When he released the 5.1 kernel, Linus Torvalds noted that he had a family event happening in the middle of the 5.2 merge window and that he would be offline for a few days in the middle. He appears to be trying to make up for lost time before it happens: over 8,300 non-merge changesets have found their way into the mainline in the first four days. As always, there is a wide variety of work happening all over the kernel tree.

  • DAX semantics

    In the filesystems track at the 2019 Linux Storage, Filesystem, and Memory-Management Summit, Ted Ts'o led a discussion about an inode flag to indicate DAX files, which is meant to be applied to files that should be directly accessed without going through the page cache. XFS has such a flag, but ext4 and other filesystems do not. The semantics of what the flag would mean are not clear to Ts'o (and probably others), so the intent of the discussion was to try to nail those down.

    Dan Williams said that the XFS DAX flag is silently ignored if the device is not DAX capable. Otherwise, the file must be accessed with DAX. Ts'o said there are lots of questions about what turning on or off a DAX flag might mean; does it matter whether there are already pages in the page cache, for example. He said that he did not have any strong preference but thought that all filesystems should stick with one interpretation.

    While Christoph Hellwig described things as "all broken", Ts'o was hoping that some agreement could be reached among the disparate ideas of what a DAX flag would mean. A few people think there should be no flag and that it should all be determined automatically, but most think the flag is useful. He suggested starting with something "super conservative", such as only being able to set the flag for zero-length files or only empty directories where the files in it would inherit the flag. Those constraints could be relaxed later if there was a need.

  • A filesystem for virtualization

    A new filesystem aimed at sharing host filesystems with KVM guests, virtio-fs, was the topic of a session led by Miklos Szeredi at the 2019 Linux Storage, Filesystem, and Memory-Management Summit. The existing solution, which is based on the 9P filesystem from Plan 9, has some shortcomings, he said. Virtio-fs is a prototype that uses the Filesystem in Userspace (FUSE) interface.

    The existing 9P-based filesystem does not provide local filesystem semantics and is "pretty slow", Szeredi said. The FUSE-based virtio-fs (RFC patches) is performing "much better". One of the ideas behind the new filesystem is to share the page cache between the host and guests, so there would be no data duplication for multiple guests accessing the same files from the host filesystem.

    There are still some areas that need work, however. Metadata and the directory entry cache (dcache) cannot be shared, because data structures cannot be shared between the host and guests. There are two ways to handle that. Either there can be a round trip from the guest to the host for each operation to ensure the coherence of the metadata cache and dcache, or the guest can cache that information and somehow revalidate the cache on each operation without going to the host kernel.

  • Common needs for Samba and NFS

    Amir Goldstein led a discussion on things that the two major network filesystems for Linux, Samba and NFS, could cooperate on at the end of day one of the 2019 Linux Storage, Filesystem, and Memory-Management Summit. In particular, are there needs that both filesystems have that the kernel is not currently providing? He had some ideas of areas that might be tackled, but was looking for feedback from the assembled filesystem developers.

    He has recently just started looking at the kernel NFS daemon (knfsd) as it is a lesser use case for the customers of his company's NAS device. Most use Samba (i.e. SMB). He would like to see both interoperate better with other operating systems, though.

  • NFS topics

    Trond Myklebust and Bruce Fields led a session on some topics of interest in the NFS world at the 2019 Linux Storage, Filesystem, and Memory-Management Summit. Myklebust discussed the intersection of NFS and containers, as well adding TLS support to NFS. Fields also had some container changes to discuss, along with a grab bag of other areas that need attention.

    Myklebust began with TLS support for the RPC layer that underlies NFS. One of the main issues is how to do the upcall from the RPC layer to a user-space daemon that would handle the TLS handshake. There is kernel support for doing TLS once the handshake is complete; hardware acceleration of TLS was added in the last year based on code from Intel and Mellanox, he said. RPC will use that code, but there is still the question of handling the handshake.

Some Difficulty That Are Often Experienced By New Linux Users

Filed under
GNU
Linux

On a Linux Users forum, I asked about the difficulties experienced by users. Apparently, I got many interesting and varied answers. Here are some of the difficulty that Linux users feel based on the opinions of people in the forum.

Read more

OSI: Powering Potential and Open Source Hong Kong (OSHK)

Filed under
OSS
  • You're Invited: Celebrating Powering Potential.

    OSI Affiliate Member Powering Potential Inc. (PPI) is currently preparing for their annual fundraising event scheduled for Wednesday, June 5, 2019, from 6 to 8:30 p.m. at NoMad Studio, located at 29 W. 39th Street, 10th Floor, in New York City.

    This year PPI celebrates their 10 Year Partnership with the Segal Family Foundation. The close, long-time relationship has been a key factor in the amazing progress PPI has made in bringing their “Educating through Technology” programs to the rural students in Tanzania.

    Proceeds from this year’s event will go towards the Sazira Secondary School SPARC+ Lab Upgrade impacting 800+ students in rural Tanzania: an ambitious project needing $23,500. While this is significant, The Collegiate Churches of New York recently awarded Powering Potential a generous grant of $13,000 towards this goal.

    PPI has an incredible event planned for their guests. Back by popular demand, Tanzanian dancers performing traditional dance led by Justa Lujwangana, CEO and founder of Curious on Tanzania will provide entertainment for the evening. A buffet will also feature authentic Tanzanian dishes based on menus from Taste of Tanzania by Miriam Malaquais. The author has donated twenty of her books for sale at the event with proceeds going to PPI.

  • Open Source Hong Kong Becomes an OSI Affiliate Member

    The Open Source Initiative (OSI), the founding organization of the open source software movement, is excited to announce the Affiliate Membership of the Open Source Hong Kong (OSHK). For ten years OSHK has worked across Asia to support open source communities, foster open source development, and increase the use of open source software, their recent OSI Membership highlights both organizations' desires to collaborate across communities.

    “OSHK mission is promoting Open Source Software projects in Hong Kong and foster its development by connecting to the global open source community. In joining OSI as an Affiliate Member, OSHK connects with OSI, and other open source organizations, to support the promotion of open source,' said Sammy Fung, President of OSHK. "Open Source Software is not just about viewing the source code, it also guarantees the right to use the software, and modify it for our own use. By working together, I believe both organizations will be able to extend our reach and missions."

    “We are excited to welcome OSHK as an OSI Affiliate Member,” said Molly de Blanc, OSI President. “The open source community truly is global, and their dedication to that idea is what inspires us as an organization. Our work for the future of open source is driven by that global community, and having the voices of OSHK in our affiliate membership helps us meet our goal in promoting and protecting open source and communities. We look forward to supporting their efforts and collaborating to help spread the message of open source even further.”

Games: GOG, Zork and Epic Games

Filed under
Gaming
  • GOG are revamping GOG Galaxy, to help you manage multiple launchers and still no Linux support

    It's like a much fancier version of Steam's own ability to add games installed from other sources, as Galaxy 2.0 will also support cross-launcher friends lists and chat making it sound pretty darn handy. They do also state you can "Connect more platforms and add new features with open-source integrations.". Those hoping that is some kind of olive branch being extended for Linux will likely be disappointed though, going by their FAQ on the newer dedicated Galaxy site it sounds more like it's simply for adding other services into the client itself for those GOG haven't yet done.

    This would have been the perfect time to finally announce the ridiculously long-overdue Linux support for GOG Galaxy (especially with the Epic Store also not supporting Linux), sadly GOG are continuing to leave Linux out. In response to a user question on Twitter about Linux, the GOG team simply said "GOG GALAXY 2.0 will be available for Windows and Mac.". While an honest answer, it's also pretty blunt. No mention of it coming, just a whole lot of nothing.

  • Zork And The Z-Machine: Bringing The Mainframe To 8-bit Home Computers

    Computer games have been around about as long as computers have. And though it may be hard to believe, Zork, a text-based adventure game, was the Fortnite of its time. But Zork is more than that. For portability and size reasons, Zork itself is written in Zork Implementation Language (ZIL), makes heavy use of the brand-new concept of object-oriented programming, and runs on a virtual machine. All this back in 1979. They used every trick in the book to pack as much of the Underground Empire into computers that had only 32 kB of RAM. But more even more than a technological tour de force, Zork is an unmissable milestone in the history of computer gaming. But it didn’t spring up out of nowhere.

    [...]

    While home computers were still scarce, the concept of selling software to regular consumers was also new. This was the time when the Atari 2600 had just gone on sale, starting the second generation game consoles that were expandable to play more that one game through the use of plug-in cartridges. It was a new market, with many questions among MIT, Stanford and other students regarding the open hacker culture versus the world of commercial software. Some, like Richard Stallman, not changing their stance on this much since their student days at MIT.

    As the Zork developers were graduating, they realized that with the success of Zork on their hands, they had this one chance to commercialize it, taking their lives and careers into an entirely different direction from their original goals. With little standing in their way, Infocom was founded on June 22nd, 1979.

  • Gaming Platform War Update: Epic Games Store Suspends Accounts...For Buying Too Many Games

    As we've talked about before, it seems an era of gaming platform wars is upon us. While Valve's Steam platform mostly only had to contend with less-used storefronts like GOG and Origin, a recent front was opened up by the Epic Games Store, which has promised better cuts to publishers to get exclusive games and has attempted to wage a PR battle to make people mad at Steam. It's all quite involved, with opinions varying across the internet as to who the good and bad guys in this story are.

Programming Leftovers

Filed under
Development
  • Intel Icelake Brings New Top-Down Performance Counters

    Back to the Sandy Bridge days there have been "Top-Down" metrics for exposing CPU pipeline statistics around bottlenecks in the processor front-end, back-end, bad speculation, or retiring. Those metrics have been done using generic counters but with Icelake and Intel CPUs moving forward, there are in-hardware fixed performance counters for these metrics.

  • Intel Open-Source 19.19.12968 Compute Runtime Released

    For those making use of Intel's OpenCL "NEO" Compute Runtime, a new tagged release is now available.

    The Intel 19.19.12968 Compute Runtime is this latest release consisting of the latest code around their OpenCL LLVM/Clang components with the graphics compiler, GMM Library, and related bits. With today's release, they pulled in the Intel Graphics Compiler 1.0.4 update.

  • Running Python in the Browser

    Running Python in the web browser has been getting a lot of attention lately. Shaun Taylor-Morgan knows what he’s talking about here – he works for Anvil, a full-featured application platform for writing full-stack web apps with nothing but Python. So I invited him to give us an overview and comparison of the open-source solutions for running Python code in your web browser.

  • Python Logging: A Stroll Through the Source Code

    The Python logging package is a a lightweight but extensible package for keeping better track of what your own code does. Using it gives you much more flexibility than just littering your code with superfluous print() calls.

    However, Python’s logging package can be complicated in certain spots. Handlers, loggers, levels, namespaces, filters: it’s not easy to keep track of all of these pieces and how they interact.

    One way to tie up the loose ends in your understanding of logging is to peek under the hood to its CPython source code. The Python code behind logging is concise and modular, and reading through it can help you get that aha moment.

    This article is meant to complement the logging HOWTO document as well as Logging in Python, which is a walkthrough on how to use the package.

  • Enhance your AI superpowers with Geospatial Visualization
  • Kushal's Colourful Adafruit Adventures

    Friend of Mu, community hero, Tor core team member, Python core developer and programmer extraordinaire Kushal Das, has blogged about the fun he’s been having with Adafruit’s Circuit Playground Express board, CircuitPython and Mu.

Elisa 0.4.0 Release

Filed under
KDE

I am happy to announce the release of 0.4.0 version of the Elisa music player.

The new features are explained in the following posts New features in Elisa, New Features in Elisa: part 2 and Elisa 0.4 Beta Release and More New Features.

There have been a couple more changes not yet covered.

Read more

Space Station welcomes free-flying, Ubuntu-powered autonomous robots

Filed under
Ubuntu

NASA has deployed three free-flying “Astrobee” robots on the ISS for house-keeping tasks. The bots run Ubuntu/ROS and Android 7.1 on Snapdragon-based Inforce modules and a Wandboard and feature 3x payload bays, 6x cameras, and a touchscreen.

We haven’t heard a news from the IBM Watson connected CIMON social robot since it debuted with a truly strange video last December in which CIMON accused International Sopace Station astronaut Alexander Gerst of being “mean.” However, NASA has now deployed and tested three somewhat similar “Astrobee” robots on the ISS for assisting the astronauts rather than chatting them up.

Read more

Software: ICQ, KDSoap, Nikita and Dockly

Filed under
Software

Graphics: Red Hat's Wayland Agenda and AMD Begins Queueing Graphics Driver Changes For The Linux 5.3 Kernel

Filed under
Graphics/Benchmarks
  • Hans de Goede: Wayland itches summary

    1. Middle click on title / header bar to lower the Window does not work for native apps. Multiple people have reported this issue to me. A similar issue was fixed for not being able to raise Windows. It should be easy to apply a similar fix for the lowering problem. There are bugs open for this here, here and here.

    2. Running graphical apps via sudo or pxexec does not work. There are numerous examples of apps breaking because of this, such as lshw-gui and usbivew. At least for X11 apps this is not that hard to fix. But sofar this has deliberately not been fixed. The reasoning behind this is described in this bug. I agree with the reasoning behind this, but I think it is not pragmatic to immediately disallow all GUI apps to connect when run as root starting today.

  • Hans de Goede: Better support for running games under Wayland (with GNOME3/mutter as compositor)

    First of all I do not want people to get their hopes up about $subject of this blogpost. Improving gaming support is a subjects which holds my personal interest and it is an issue I plan to spend time on trying to improve. But this will take a lot of time (think months for simple things, years for more complex things).

  • AMD Begins Queueing Graphics Driver Changes For The Linux 5.3 Kernel

    Being past the Linux 5.2 kernel merge window, AMD's open-source Linux graphics driver developers have already begun queuing changes anticipated for Linux 5.3 via a work-in-progress tree.

    Given the short time that this 5.3 WIP tree has been around, there isn't too much exciting about the changes -- yet. But surely over the weeks ahead it will get interesting. Making things particularly interesting is that we are expecting initial Navi support to make it for Linux 5.3... In recent weeks AMD began pushing AMDGPU LLVM compiler back-end changes for GFX10/Navi and we expect the AMDGPU DRM kernel driver enablement to come for Linux 5.3. Linux 5.3 will already be arriving after the rumored release of the first Navi graphics cards so having to wait past 5.3 for mainline support would already be tragic. But given the recent LLVM activity, we expect AMD to push out the Navi kernel driver changes soon. For that likely massive patch-set to be reviewed in time, the Navi patches would need to make their debut within the next few weeks.

today's howtos and programming

Filed under
Development
HowTos

Fedora 30 Workstation review - Smarter, faster and buggier

Filed under
Red Hat

Fedora 30 is definitely one of the more interesting releases of this family in a long-time. It brings significant changes, including solid improvements in the desktop performance and responsiveness. Over the years, Fedora went from no proprietary stuff whatsoever to slowly acknowledging the modern needs of computing, so now it gives you MP3 codecs and you can install graphics drivers and such. Reasonable looks, plus good functionality across the board.

However, there were tons of issues, too. Printing to Samba, video screenshot bug, installer cropped-image slides, package management complications, mouse cursor lag, oopses, average battery life, and inadequate usability out of the box. You need to change the defaults to have a desktop that can be used in a quick, efficient way without remembering a dozen nerdy keyboard shortcuts. All in all, I like the freshness. In general, it would seem the Linux desktop is seeing a cautious revival, and Fedora's definitely a happy player. But there are too many rough edges. Well, we got performance tweaks after so many years, and codecs, we might get window buttons and desktop icons one day back, too. Something like 6/10, and definitely worth exploring.

I am happy enough to do two more tests. I will run an in-vivo upgrade on the F29 instance on this same box, and then also test the distro on an old Nvidia-powered laptop, which will showcase both the support for proprietary graphics (didn't work the last time) and performance improvements, if they scale for old hardware, too. That's all for now.

Read more

Events: Automotive at LF, Linux Clusters Institute, Linux Plumbers Conference (LPC)

Filed under
OSS
  • Automotive Linux Summit and Open Source Summit Japan Keynote Speakers and Schedule Announced

    The Linux Foundation, the nonprofit organization enabling mass innovation through open source has announced the speaker line up for Open Source Summit Japan and Automotive Linux Summit. One registration provides access to all content at both events, which will be held July 17-19 at the Toranomon Hills Forum in Tokyo.

    Open Source Summit Japan (OSSJ) and Automotive Linux Summit (ALS) will bring together top talent from companies on the leading edge of innovation including Toyota Motor Corporation, Uber, Intel, Sony, Google, Microsoft and more. Talks will cover a range of topics, with ALS talks on everything from infrastructure and hardware to compliance and security; and OSSJ sessions on AI, Linux systems, cloud infrastructure, cloud native applications, open networking, edge computing, safety and security and open source best practices.

  • Register Now for the 2019 Introductory Linux Clusters Institute Workshop

    Registration is now open for the 2019 Linux Clusters Institute (LCI) Introductory Workshop,which will be held August 19-23, 2019 at the Rutgers University Inn & Conference Center in New Brunswick, NJ. This workshop will cover the fundamentals of setting up and administering a high-performance computing (HPC) cluster and will be led by leading HPC experts.

  • Additional early bird slots available for LPC 2019

    The Linux Plumbers Conference (LPC) registration web site has been showing “sold out” recently because the cap on early bird registrations was reached. We are happy to report that we have reviewed the registration numbers for this year’s conference and were able to open more early bird registration slots. Beyond that, regular registration will open July 1st. Please note that speakers and microconference runners get free passes to LPC, as do some microconference presenters, so that may be another way to attend the conference. Time is running out for new refereed-track and microconference proposals, so visit the CFP page soon. Topics for accepted microconferences are welcome as well.

Security Leftovers

Filed under
Security
  • Security updates for Wednesday
  • Illumos-Powered OmniOS Gets Updated Against MDS / ZombieLoad Vulnerabilities

    While it was just earlier this month that the OpenSolaris/Illumos-based OmniOS saw a big LTS release, it's already been succeeded by a new release given the recent Intel MDS / Zombieload CPU vulnerabilities coming to light.

    There are new spins of OmniOS for all supported releases. These new OmniOS Community Edition releases mitigate against the Multiarchitectural Data Sampling (MDS) vulnerabilities and also bundle in the updated Intel CPU microcode.

  • Hackers Hack A Forum For Hacked Accounts: Here’s How

    A group of hackers failed to deploy security mechanisms to secure the storage where they store hacked accounts and another hacker group hacked it.

    The story is indeed funny and real. Infamous forum named OGUSERS which is popular amongst hackers for obtaining “OG” Instagram, Twitter usernames, hacked accounts of Domino’s Pizza, Steam, PlayStation Network, and other online accounts was hacked by a hacker group and its data was published in another hacker forum.

  • Security Announcement: Disabling SMT by default on affected Intel processors

    This is an important announcement with an upcoming change in the next Core Update of IPFire.

    Because of the recent vulnerabilities in Intel processors, the IPFire team has decided, that - to keep systems as secure as possible - Simultaneous Multi-Processing (SMT) is automatically disabled if the processor is vulnerable to one of the attacks.

    SMT is also called Intel(R) Hyper-Threading Technology and simulates more virtual cores than the system has. This allows to perform faster processing when applications benefit from it. Unfortunately with networking, we benefit from that. Therefore the effect of disabling SMT will be a very signifiant performance impact of around 30% or more. Applications that will be affected in IPFire are the firewall throughput itself as well as other CPU and memory-bound tasks like the web proxy and the Intrusion Prevention System. On systems that are not vulnerable for this attack, SMT is being left enabled. If you still want to disable it, please do so in the BIOS of your firewall.

Red Hat and the rise of RHEL

Filed under
Red Hat

If the success of the open source company Red Hat can be ascribed to one thing, it's the Enterprise Linux operating system that it releases

The company recently unveiled the general release of the latest version, RHEL 8, and it serves as a bellwether for how software development has changed over the years.

Developers are now shouldering more operational responsibilities, which is largely due to the rise in the use of containers. This enables teams to use microservices to build applications. With RHEL 8, Red Hat has also placed container tools such as Buildah, Podman and Skopea directly into the operating system.

Read more

Red Hat, Fedora and SUSE/OpenStack

Filed under
Red Hat
Server
SUSE
  • Rook-Ceph storage Operator now on OperatorHub.io

    We are excited to announce the addition of the Rook-Ceph storage Operator to OperatorHub.io. Operators are design patterns that augment and implement common day one and day two activities with Kubernetes clusters, simplifying application deployments and empowering developers to focus on creation versus remediation. The Rook-Ceph Operator is an upstream effort that Red Hat is leading and is using as part of its work towards Red Hat OpenShift Container Storage 4.

    Developing and deploying cloud-native applications at scale can be complex and challenging. The new Rook-Ceph storage Operator is designed to automate the packaging, deployment, management, upgrading, and scaling of Ceph clusters that provide persistent storage to stateful applications as well as infrastructure services (logging, metrics, registry) in Kubernetes clusters. The release of Rook’s Ceph Operator augments Kubernetes scheduling with a complement of stateful storage services including block, filesystem and object storage.

  • Red Hat Satellite 6.4.3 has been released

    Red Hat Satellite 6.4.3 is generally available. The main drivers for the 6.4.3 release are a Request for Feature Enhancement (RFE) for capsule syncing control as well as general stability fixes.

    The capsule syncing control feature enables the user to have control over when capsule syncs occur. Traditionally the capsule sync occurs automatically after a content view is updated, but some customers may want more granular control over when the synchronization occurs. Satellite 6.4.3 introduces a new setting in Administer —> Settings —> Content —> Sync Capsules after Content View promotion.

  • Contributors are Empowered When They Know the Process

    There is a saying in the legal profession that you should never ask a question you don’t already know the answer to. Despite how this sounds, it is actually a rule most people follow in life. This is the source of that feeling you get when you’re too scared to raise your hand and ask a question. In Open Source we need to make sure that contributors feel like they already “know” the answers, so they will feel confident in making the request.

    As a university lecturer, I always encouraged my students to first think about what they thought the answer was and then ask the question. In some cases, I encouraged them to actually write down what they thought the answer was. In this way, they could judge both their skills and their ability to grow based on what the answer turned out to be. It created an additional feedback loop.

  • Alisha and Shraddha: Positive feedback loops in Fedora

    This post is the second introduction to the Fedora Summer Coding interns Class of Summer 2019. In this interview, we’ll meet Alisha Mohanty and Shraddha Agrawal, who are both working on Fedora Happiness Packets to promote positive feedback loops in the Fedora community.

  • The OpenStack User Survey is now open

    The 2019 OpenStack User Survey is now open and waiting for your input. Whether you’re a user of OpenStack, or an operator utilising it to power your offerings, the OpenStack Foundation (and the rest of the community) want to hear about your usage.

    2018 saw the 11th OpenStack User Survey unveiled at the Berlin OpenStack Summit, giving some fantastic insight into how and where people are using OpenStack across 63 different countries. Usage in Asia surged dramatically in 2018, with 48% of respondents based in that continent, with Europe 2nd at 26% and North America 3rd with 20% of respondents.

Programming: KubeCon, PHP, Python, GitLab, and Rust

Filed under
Development
  • Team OpenCensus or OpenTracing? It'll be neither and both now: Hello, OpenTelemetry

    Something odd happened at KubeCon 2019. Rather than snipe at each other from the safety of Twitter, two very similar open-source projects opted to pool their ideas into one: OpenTelemetry.

    The project is geared towards solving the problem of working out just what the heck is happening in today's microservices or container-based apps. Logging without incurring a chunky overhead both in terms of generating useful telemetry and actually collating the output.

    Distributed tracing is a bit more than fancy logging, as one commentator put it. Think more a transaction log over all the containers, services and components used in an application.

    Two projects emerged to deal with the challenge – OpenCensus from Google and OpenTracing, co-created by Ben Sigelman of Lightstep.

  • PHP 7.4 as Software Collection.

    Version 7.4.0-alpha1 will be soon released. It's now enter the stabilization phase for the developers, and the test phase for the users.

    RPM of this upcoming version of PHP 7.4, are available in remi repository for Fedora 29, 30 and Enterprise Linux 7, 8 (RHEL, CentOS, ...) in a fresh new Software Collection (php74) allowing its installation beside the system version.

    As I strongly believe in SCL potential to provide a simple way to allow installation of various versions simultaneously, and as I think it is useful to offer this feature to allow developers to test their applications, to allow sysadmin to prepare a migration or simply to use this version for some specific application, I decide to create this new SCL.

  • HEIC / HEIF images support

    The HEIF image format (High Efficiency Image File Format) is now widely used, especially since iOS 11, so it make sense to be able to process these images.

  • EuroPython 2019: First batch of accepted sessions
  • Hello CodeGrades!

    This is a blog about CodeGrades, an experiment to help folks learn about programming (initially in Python). We’ll use it to celebrate the successes, learn from the failures and reflect upon the feedback of participants. We’ll also share project news here too.

  • Setting Up GitLab CI for a Python Application

    This blog post describes how to configure a Continuous Integration (CI) process on GitLab for a python application.

  • How OpenTracing & OpenCensus Merger Helps Users Like GitLab

    In this episode of Let’s Talk, Andrew Newdigate – Staff Site Reliability Engineer at GitLab talks about OpenTracing, OpenCensus, and the newly announced OpenTelemetry project.

  • This Week In Rust: This Week in Rust 287
  • Kushal Das: Game of guessing colors using CircuitPython
Syndicate content

More in Tux Machines

GNOME: Theming, Mutter and Sprint 1

  • App Devs Ask Linux Distros to “Stop Theming Our Apps”
    A group of independent Linux app developers have written an open letter to ask wider GNOME community to ask: “stop theming our apps”. The letter is addressed to the maintainers of Linux distributions who elect to ship custom GTK and icons themes by default in lieu of upstream defaults. By publicising the issues they feel stem from the practice of “theming” it’s hoped that distros and developers might work together to create a “healthier GNOME third party app ecosystem”.
  • A Group of Independent Linux App Developers Has Asked Wider GNOME Community To 'Stop Theming' Its Apps
  • GNOME's Mutter Makes Another Step Towards X11-Less, Starting XWayland On-Demand
    GNOME 3.34 feature development continues at full-speed with a lot of interesting activity this cycle particularly on the Mutter front. On top of the performance/lag/stuttering improvements, today Mutter saw the merging of the "X11 excision" preparation patches. The Mutter patches by longtime GNOME developer Carlos Garnacho around preparing for X11 excision were merged minutes ago.
  • Georges Basile Stavracas Neto: New Background panel, Calendar search engine, GTK4 shortcut engine (Sprint 1)
    GNOME To Do is full GTK4 these days. Which means it’s both a testbed for new GTK4 features, and also a way to give feedback as an app developer for the GTK team. Unfortunately, it also means To Do is blocked on various areas where GTK4 is lacking. One of these areas is keyboard shortcut. Last year, Benjamin wrote a major revamp for keyboard shortcuts. As part of this cycle, I decided to rebase and finish it; and also make To Do use the new API. Unfortunately, I failed to achieve what I set myself to. Turns out, adding a shortcuts engine to GTK4 is more involving and requires way more context than I had when trying to get it up to speed. I failed to predict that one week would have not been enough to finish it all. However, that does not mean all the efforts were wasted! The rebasing of the shortcuts engine was a non-trivial task successfully completed (see gtk!842), and I also fixed a few bugs while working on it. I also got a working prototype of GNOME To Do with the new APIs, and confirmed that it’s well suited — at least for a simpler application such as To Do. In retrospect, I believe I should have been more realistic (and perhaps slightly pessimistic) about the length and requirements of this task.

Programming: SVE2, Graphical Interface, Guile, Python and More

  • Arm SVE2 Support Aligning For GCC 10, LLVM Clang 9.0
    Given the significant performance benefits to Arm's Scalable Vector Extension 2 (SVE2), they are working on ensuring the open-source Linux compiler toolchains support these new CPU instructions ahead of SoCs shipping that support this big addition. Arm announced Scalable Vector Extension 2 (SVE2) recently as their latest advancement around SIMD programming and increasing data-level parallelism in programs. SVE2 is designed to ultimately deliver better SIMD performance than their long-available Neon extensions and to scale the performance with vector length increases as well as enabling auto-vectorization techniques. More details in this post on SVE2.
  • Intake: Discovering and Exploring Data in a Graphical Interface
    Do you have data that you’d like people to be able to explore on their own? Are you always passing around snippets of code to load specific data files? These are problems that people encounter all the time when working in groups and using the same datasources or when trying to distribute data to the public. Some users are comfortable interacting with data entirely programatically, but often it is helpful to use a GUI (Graphical User Interface) instead. With that in mind we have reimplemented the Intake GUI so that in addition to working in a jupyter notebook, it can be served as a web application next to your data, or at any endpoint.
  • lightening run-time code generation
    The upcoming Guile 3 release will have just-in-time native code generation. Finally, amirite? There's lots that I'd like to share about that and I need to start somewhere, so this article is about one piece of it: Lightening, a library to generate machine code.
  • Python Language Creator: “Male Attitude” Is Hurting The Programming Space
    Guido van Rossum is a famous name in the programming world. He is the creator of the Python programming language which was developed back in 1989. It is only since the last few years when this general-purpose programming language started gaining popularity. The number of Python users has increased significantly and it was not only named as the best programming language by IEEE but also the most asked-about language on Stack Overflow, overthrowing JavaScript — the all-time winner for decades.
  • Avant-IDLE: an experiment

Dear Ubuntu: Please Stop Packaging Epiphany If You Won’t Do It Properly

When users try Epiphany on Ubuntu, they receive a sub-par, broken browser. If you’re not willing to do this right, please just remove Epiphany from your repositories. We’d all be happier this way. You are the most popular distributor of Epiphany by far, and your poor packaging is making the browser look bad. Read more

Security Leftovers

  • Security updates for Friday
  • Episode 19: Democratizing Cybersecurity
    Katherine Druckman and Doc Searls talk to Alex Gounares of Polyverse Linux about Cybersecurity for everyone.
  • Introducing the Librem Tunnel
    You probably know by now that the Librem Tunnel is part of Librem One, a suite of privacy-protecting, no-tracking apps and services created by our team at Purism, which also includes Librem Mail, Librem Chat and Librem Social. Librem Tunnel offers an encrypted, no-logging, virtual private network tunnel, making sure all your network traffic is secure and your privacy fully protected. This means you can safely and conveniently use any public hotspot and not have to worry about how private your connection really is, using standards-based OpenVPN with any compatible client. You are not the product in Librem Tunnel: you will not be tracked, we do not sell your data, and we don’t advertise.
  • Trump Explains Why He Banned Huawei, And It’s Not Convincing
    The world’s two biggest economies are indulged in a trade war and the toll is being paid by the Chinese company Huawei, which is being erased from existence in the US. The US government has already blacklisted Huawei, causing a big blow to its growing smartphone business across the globe. After the temporary license ends in August, it won’t be able to do any business with US-based companies unless the ban is lifted.
  • Snort Alerts
    It was previously explained on LinuxHint how to install Snort Intrusion Detection System and how to create Snort rules. Snort is an Intrusion Detection System designed to detect and alert on irregular activities within a network. Snort is integrated by sensors delivering information to the server according to rules instructions. In this tutorial Snort alert modes will be explained to instruct Snort to report over incidents in 5 different ways (ignoring the “no alert” mode), fast, full, console, cmg and unsock. If you didn’t read the articles mentioned above and you don’t have previous experience with snort please get started with the tutorial on Snort installation and usage and continue with the article on rules before continuing this lecture. This tutorial assumes you have Snort already running.