Svobodný software

Drgn is the programmable debugger developed by Meta engineer Omar Sandoval that has proven quite versatile and popular with Linux kernel developers and others. After nearly two dozen releases already, Drgn v0.1 was released this week as another big step forward for this open-source debugger...

When beginning some early Linux 7.0 kernel benchmarking this week for looking at its performance in its early development state, I started off testing on Core Ultra X7 "Panther Lake" in being hopeful for better performance with the maturing Arc B390 Xe3 graphics and the like. But I ended up finding Intel Panther Lake seeing some performance regressions on Linux 7.0. So next up I turned to an AMD EPYC Turin server since if regressions existed there at least it's much faster to carry out bisecting of the kernel performance regressions. But with that initial testing wrapped up, I didn't find any regressions like with Panther Lake and standing out were some rather enticing PostgreSQL database server performance benefits when running atop Linux 7.0.

Following GNOME 50's Mutter merging sdr-native color mode support for wide color gamut displays this week, another late addition to Mutter has now been merged ahead of next month's GNOME 50 stable release...

While we are on the horizon of seeing PCI Express 6.0 devices, there are already early Linux kernel patches beginning to surface for PCI Express 7.0...

Ahead of the Linux 7.0 merge window ending this weekend, the PHY updates were merged this week for this next major kernel release. There are some notable PHY additions particularly for Apple Silicon USB Type-C support as well as additions for Qualcomm's new Snapdragon X2 laptop SoCs...

Canonical engineer Utkarsh Gupta announced today on the behalf of the Ubuntu Release Team that the Ubuntu 26.04 "Resolute Raccoon" has entered its feature freeze...

Cloud Hypervisor 51 is now available for this Rust-based VMM focused on secure cloud computing. For what began as an Intel open-source project years ago is continuing to be largely led by Microsoft, Cyberus Tech, Tencent, Ant Group, and others...

Last year LunarG announced KosmicKrisp as a new Vulkan implementation atop Apple's Metal API. Initially targeting macOS, KosmicKrisp since was merged to Mesa and has evolved quite nicely as a modern implementation of Vulkan-on-Metal for Apple Silicon. It continues moving ahead with an eye for iOS, more performance optimizations, and completing Vulkan 1.4 support...

All of the Thunderbolt/USB driver changes were merged this week for the nearly-over Linux 7.0 merge window...

Vulkan 1.4.344 is out today as the latest routine spec update for this high performance graphics and compute API. Besides a handful of fixes and clarifications, Vulkan 1.4.344 brings a new extension courtesy of Valve engineers...

It's not too surprising but the upcoming Ubuntu 26.04 Long Term Support release will be transitioning to OpenJDK 25 as its default Java version...

Merged today to Mesa 26.1 Git is a one-line change to the Intel "ANV" Vulkan driver that is showing to deliver some slight performance benefits or up to 3% noted in some select games...

The Turbostat command-line utility for reporting processor frequency and idle statistics along with other useful information for AMD and Intel CPUs can now report some L2 cache stats for recent Intel CPUs beginning with Linux 7.0...

Linux block maintainer and IO_uring lead developer Jens Axboe recently was debugging some slowdowns in the AHCI/SCSI code with IO_uring usage. When turning to Claude AI to help in sorting through the issue, patches were devised that can deliver up to a "literally yield a 50-80x improvement on the io_uring side for idle systems." The code is on its way to QEMU...

The Gigabyte MZ33-AR1 is a single socket AMD EPYC 9004/9005 E-ATX server motherboard for those wanting up to 24 RDIMMs, dual 10 Gigabit LAN, and plenty of storage potential via six MCIO connectors and four PCIe Gen5 x16 slots. Beyond offering nice capabilities for this modern AMD EPYC server motherboard at a ~$700 USD price point, it's uniquely positioned for an open-source firmware future thanks to ongoing work around AMD openSIL and hopefully followed by OpenBMC.

The newest addition to AMD's ROCm/HIP portfolio is HIP Threads "hipThreads" as a C++ style concurrency library for AMD GPUs...

When searching for "MT7902" and "Linux" there is no shortage of users asking about Linux driver support for the Mediatek MT7902 WiFi chipset or users complaining about their MT7902 WiFi not working under Linux with that chipset found in numerous laptops in recent years. Fortunately, there is finally Linux driver support for the MT7902 surfacing for review on the Linux kernel mailing list...

After delays, Weston 15.0 shipped this morning as the latest feature release to this reference Wayland compositor. Weston 15.0 comes in heavy on new features - including a Vulkan renderer in experimental form...

Merged on Wednesday were some additional memory management "MM" updates for the Linux 7.0 merge window. Most interesting out of these latest three dozen patches is support for batched unmapping of file-backed large folios...

Simdjson is the open-source project for high performance JSON parsing by leveraging SIMD instructions for "parsing gigabytes of JSON per second." Notably it showed years ago the huge performance advantage to using AVX-512 in JSON parsing for surprisingly big benefits. Simdjson has continued advancing since then with various optimizations over the years and today is out with simdjson 4.3 that brings yet more SIMD optimizations...