Phoronix

Yesterday I noted some early performance regressions I've found on the Linux 6.19 kernel compared to Linux 6.18 LTS stable. Those initial benchmarks were on an AMD EPYC server. Since then I've seen many of the same workloads regressing similarly on an AMD Ryzen Threadripper workstation between Linux 6.18 and Linux 6.19 Git. Given the significant impact and AMD Threadripper processors always helping out to speed-up Linux kernel build times to make for a quicker and more manageable kernel bisecting experience, here is a look at some of the results for the Linux 6.19 performance regressions.

AMD today announced their newest member of their expansive EPYC family: the EPYC Embedded 2005 series. The new AMD EPYC Embedded 2005 Series are intended primarily for networking, storage, and industrial devices while these BGA processors will likely see other interesting thin-server uses as well.

For benefiting their Azure cloud and other users of Hyper-V virtualization at large, Microsoft has rolled out a number of feature additions and improvements for their Hyper-V kernel code in Linux 6.19...

For the past 15 years the Smatch static analysis tool has been routinely run for uncovering countless bugs within the Linux kernel. Dan Carpenter who authored Smatch and has been routinely analyzing the Linux kernel with it has authored more than 5,568 patches over the years to become one of the top bug fixers for the kernel. But his funding at Linaro has been cut and the project's future now in question...

Last week saw the main set of block and IO_uring feature patches for the Linux 6.19 merge window but some additional block subsystem material was merged on Monday. There are various NVMe updates now merged plus enabling per-CPU BIO caching by default to help with file-system performance...

The Flash-Friendly File-System "F2FS" is enjoying more performance optimizations and other improvements for the Linux 6.19 kernel cycle...

Since Showtime replaced Totem as the default video player of GNOME, the desktop has lacked thumbnail capabilities for audio and video files. But to address that defect, the Rust-based gst-thumbnailers project has been in development to leverage GStreamer and paired with Rust to provide safe thumbnail generation capabilities for audio and video content...

The newest Mesa 26.0-devel code as of today has landed initial support for Qualcomm Adreno Gen 8 graphics into the Freedreno Gallium3D driver. The Adreno Gen 8 graphics so far are most notably used by the new Snapdragon X2 Elite laptop SoC with its X2-85 GPU as well as the new Snapdragon 8 Elite Gen 5 with Adreno 840 graphics...

Beginning with the Linux 6.19 kernel, the hung task detector and system lock-up detector are now optionally able to provide greater insight into the issues by dumping additional system information. The new lockup_sys_info and hung_task_sys_info sysctl knobs were merged over as part of the pull requests managed by Andrew Morton...

Google engineers for the past number of months have been working on the Live Update Orchestrator as a new way of applying live Linux kernel updates. The Live Update Orchestrator "LUO" builds atop the Kexec Handover "KHO" functionality already within the kernel. Google has since been deplyoing LUO in their production environments for faster security updates to kernels, especially when involving VMs. LUO is now upstream in Linux 6.19...

Meson 1.10 is out today as the newest feature release for this popular cross-platform build system...

The Mozilla Firefox 146.0 release binaries are now available with a very exciting improvement for Linux users relying on Wayland...

Recently there were Phoronix benchmarks looking at the Intel Battlemage GPU compute performance since last year when the Arc B580 graphics card launched as well as the OpenGL and Vulkan graphics performance for the B580 on Linux since launch. There was much progress on the open-source Intel Linux graphics drivers at large this year but especially for Battlemage. Following that a Phoronix Premium reader asked about seeing some fresh Llama.cpp AI benchmarks with its Vulkan back-end now for the Arc B580 compared to competing AMD and NVIDIA graphics cards. Here are those benchmarks as requested.

While just half-way through the Linux 6.19 merge window, over the weekend I began running some benchmarks of the current Linux 6.19 Git state compared to Linux 6.18 LTS stable. There are some minor performance improvements to note in a few of the tests on the first system I tested but also some regressions at this very early pre-RC1 state of the Linux 6.19 kernel...

One of the new Linux engineering initiatives out of AMD is working to further enhance Linux performance on today's large core count systems by introducing push-based load balancing...

All of the Human Interface Devices (HID) subsystem updates were merged a few days ago for the ongoing Linux 6.19 kernel merge window. Standing out this cycle on the HID side are seeing new/improved support for several Logitech devices...

I2C in Linux 6.19 brought support for Rust-written I2C drivers. The newer I3C "Improved Inter-Integrated Circuit" interface changes have now been merged and the big feature there is HDR support. Not to be confused with the more common High Dynamic Range acronym usage for HDR, HDR in the I3C context is for the "High Data Rate" mode for facilitating faster data transfers...

The ARM64 code changes were merged last week into the in-development Linux 6.19 kernel. The most notable of the ARM64 architecture changes this cycle is landing the Arm MPAM driver for Arm's Memory System Resource Partitioning and Monitoring...

Released today is a new version of Iced, the popular cross-platform GUI library for the Rust programming language. Iced is notably used by the COSMIC desktop environment and a growing variety of different Rust apps...

Merged to the mainline Linux kernel last year was GPIB drivers in the kernel's "staging" area. GPIB is the General Purpose Interface Bus launched by HP back in 1972 for lab equipment and more. After a year of cleaning up the code in the kernel's staging area, for Linux 6.19 the GPIB drivers have been promoted out of the staging area and into the Linux kernel proper. The Linux kernel now has stable driver support for this 8 Mbyte/s parallel bus that was introduced 53 years ago...

One of the most exciting merges this weekend to the Linux 6.19 kernel is establishing the infrastructure for supporting PCI Express link encryption and device authentication. Multiple vendors are working on PCIe link encryption for their hardware while this initial pull begins laying the foundation of AMD SEV-TIO Trusted I/O support for the mainline kernel...

Merged last night for the Linux 6.19 kernel merge window were all of the USB and Thunderbolt driver changes. Standing out this cycle is Apple Silicon devices like the M1 Macs now having working USB3 support on the mainline Linux kernel...

In addition to NVIDIA improving peer-to-peer (P2P) DMA for block devices in Linux 6.19, NVIDIA also led an effort providing DMA-BUF support for VFIO PCI devices for opening up some interesting new cases moving forward. As part of the VFIO pull request this new functionality has landed for Linux 6.19...

A week ago I wrote about AI being used to help modernize Ubuntu's Error Tracker. Microsoft GitHub Copilot was tasked to help adapt its Cassandra database usage to modern standards. It's worked in some areas but even for a rather straight forward task, some of the generated functions ended up being "plain wrong" according to the developer involved...

On top of the Rust driver core changes and other Rust code for Linux 6.19, the modules infrastructure for this new kernel version is also bringing some new code. Surprisingly, it's taken until now for Rust kernel modules/drivers to support module parameters as is common practice for passing different options when booting the kernel or manually loading kernel drivers with extra non-default options...

Sent in for the Linux 6.19 merge window when it comes to the frame-buffer device "FBDEV" subsystem are just a set of "fixes" for FBDEV drivers and code clean-ups. But it does also include a new console font option for better supporting modern laptops with high density displays...

The Non-Volatile Memory Device (NVDIMM) subsystem updates were merged today for the in-development Linux 6.19 kernel. Most notable this cycle for the NVDIMM code is a new open-source driver addition courtesy of Microsoft...

Making for a bit more exciting weekend is that minutes ago AMD has posted their first patch for enabling Zen 6 processor support within the GNU Compiler Collection (GCC) for -march=znver6 targeting...

The latest improvement to the RadeonSI Gallium3D driver by prominent AMD Mesa developer Marek Olak is enabling support for up to 64K x 64K textures with RDNA4 GPUs...

The set of six branches containing SoC and platform updates/additions for the Linux 6.19 kernel have been merged for enabling a lot of new RISC-V and ARM 64-bit hardware as well as enhancing some existing SoCs/platforms...

FEX 2512 is out today as the newest monthly update for this software that enables running x86/x86_64 Linux binaries on ARM64 Linux, including the likes of Wine and Valve's Steam Play (Proton) for being able to run Windows games on 64-bit ARM Linux devices...

Flowblade 2.24 released today as the newest version of this open-source, non-linear video editing application. Flowblade 2.24 brings a number of refinements while also interesting is their commentary concerning the future with Wayland and GTK4 porting...

For anyone still relying on Solaris in production or just nostalgic Solaris users from the grand Sun Microsystems days, Solaris 11.4 SRU 87 was released by Oracle this week as one of the heavier stable release updates in recent memory...

Beyond the main set of Rust changes to land in Linux 6.19 earlier this week, as we near the end of the first week of two for the Linux 6.19 merge window... More Rust changes. This time around the driver core updates for the kernel bring a number of Rust changes...

It was a busy start of December for KDE Plasma developers in working out several hardware fixes for the current Plasma 6.5 series while also working on new Plasma 6.6 features like the per-DRM-plane color pipelines...

There have been many Intel Linux/open-source software engineers to leave the company over the past year among other setbacks for their Linux/open-source initiatives. Announced this Friday night is one of their highest profile departures of the year as it pertains to their Linux efforts...

As anticipated the first release candidate of Wine 11.0 is now available in working toward the annual stable release in January...

For Linux 6.19 as what will be the first stable kernel release of 2026, the IEEE-1394 Firewire stack continues dealing with device quirks and improving support for different Firewire-connected devices. In 2026 is also when the Linux Firewire maintainer plans to begin recommending users migrate away from the IEEE-1394 bus followed by closing the Linux Firewire efforts in 2029...

The IO_uring and block subsystem changes have been merged for the Linux 6.19 merge window with a few improvements worth highlighting this cycle...

Finnish company Jolla started out 14 years ago where Nokia left off with MeeGo and developed Sailfish OS as a new Linux smartphone platform. Jolla released their first smartphone in 2013 after crowdfunding but ultimately the Sailfish OS focus the past number of years now has been offering their software stack for use on other smartphone devices. But now it seems they are trying again with a new crowd-funded smartphone...

Nearly four years have passed since AMD launched their EPYC Milan-X processors with 3D V-Cache. When recently rearranging some servers in the lab and realizing the four year anniversary was coming up in March, curiosity got the best of me in wondering where the Linux performance and energy efficiency on Milan-X is now with the latest Linux software stack compared to the numbers when Milan-X launched back in March 2022.

Intel engineer Tim Chen has sent out a second version of the proposed Cache Aware Scheduling patches for the Linux kernel to enhance the CPU performance of modern processors sporting multiple cache domains...

Venus is the VirtIO-GPU driver that allows for Vulkan support within guest virtual machines permitting sufficient host driver support and other requirements in place with hypervisors like CrosVM and QEMU. The Venus driver now supports Vulkan's mesh shader capabilities and in turn advances the DXVK-Proton support for Linux gaming within VMs...

On top of enabling Xe3P graphics for Nova Lake and Crescent Island plus other changes like CASF adaptive sharpening for Lunar Lake and newer, another set of Intel kernel graphics driver updates were merged overnight as a big win for the open-source Intel graphics stack on Linux...

While NTFSPLUS continues to be developed as a new and modern NTFS open-source driver for Linux systems, at the moment NTFS3 from Paragon Software remains the most capable NTFS file-system driver within the mainline kernel. For the Linux 6.19 merge window a variety of fixes have landed for this driver...

The sound subsystem updates were merged on Thursday for enabling a variety of new audio hardware with the Linux 6.19. Among the hardware standing out is getting Intel Nova Lake audio support in order...

The big set of kernel graphics driver features were merged today for the Linux 6.19 kernel. As usual there is a lot of new feature work on the AMD Radeon, Intel, and NVIDIA graphics drivers plus the smaller Arm/embedded graphics like now having initial Qualcomm Gen8 GPU support. Plus the growing number of accelerator "accel" drivers for NPUs / AI accelerators...

Amazon AWS today announced Graviton5 as their newest-generation ARM64 server processor for their EC2 cloud. Graviton5 is being promoted as offering 25% higher performance over existing Graviton4 processors...

NVIDIA just released CUDA 13.1 for what they claim is "the largest and most comprehensive update to the CUDA platform since it was invented two decades ago." The most notable addition with the CUDA 13.1 release is CUDA Tile as a new tile-based programming model...

The many hardware monitoring (HWMON) subsystem updates were merged today for Linux 6.19 that is predominantly around delivering new hardware support...