The Performance Cost To A Proposed Fedora 37 CFLAGS/CXXFLAGS Change
The Performance Cost To A Proposed Fedora 37 CFLAGS/CXXFLAGS Change
102 Minutes Ago - Software - 9 Comments

Coming about last week was a Fedora 37 change proposal to improve the profiling and debugging of Fedora packages but with possible performance costs. That suggested change is about adding "-fno-omit-frame-pointer" to the default CFLAGS/CXXFLAGS when building packages so the frame pointer is always available for improving the debugging/profiling of the stock Fedora packages. Unfortunately, it can come with significant performance costs as these benchmarks show.

F2FS File-System Driver Preparing A Low-Memory Mode
3 Hours Ago - Linux Storage - F2FS Low Memory Mode - 2 Comments

Google engineers are working on the notion of "memory modes" for the Flash-Friendly File-System (F2FS) with the intent on introducing a "low memory" mode for storage devices that would alter its behavior. Presumably Google is working on this new F2FS feature for low-end Android devices.

26 June

25 June

Open-Source VIA Graphics Driver Hopes To Be Mainlined For Linux 5.20
Open-Source VIA Graphics Driver Hopes To Be Mainlined For Linux 5.20
25 June 06:09 AM EDT - VIA - OpenChrome DRM Driver - 21 Comments

2022 is certainly looking to be interesting on the open-source graphics driver front... You probably didn't have Imagination publishing an open-source PowerVR Vulkan driver on your 2022 bingo card nor NVIDIA working on an open-source GPU kernel driver. The latest 2022 surprise is the OpenChrome driver project is hoping to finally be mainlined in Linux 5.20 for open-source VIA graphics for those still running vintage VIA x86 hardware.

Zstd Compression Being Eyed For Use Within LLVM
Zstd Compression Being Eyed For Use Within LLVM
25 June 05:35 AM EDT - LLVM - Zstandard - 11 Comments

LLVM developers are eyeing Zstandard "Zstd" use within this compiler stack as a secondary compression method to Zlib. Zstd could be used for compressing ELF debug sections, AST data structures, and other purposes within this open-source compiler stack.

24 June

Linus Torvalds' Latest Commentary Against -O3'ing The Linux Kernel
Linus Torvalds' Latest Commentary Against -O3'ing The Linux Kernel
24 June 02:44 PM EDT - Linux Kernel - Compiler Optimizations - 84 Comments

This shouldn't be too surprising considering some of Linus Torvalds past commentary about compiler optimizations and bad experiences long ago with GCC, but Linus Torvalds is not interested in seeing a tunable Kconfig option for using the -O3 compiler optimization level for building the Linux kernel without substantial justification.

D3Cold-Off Power Savings Being Prepped For Intel's Linux Driver For Arc Graphics
D3Cold-Off Power Savings Being Prepped For Intel's Linux Driver For Arc Graphics
24 June 01:53 PM EDT - Intel - D3Cold-Off For Alchemist - 2 Comments

Intel's open-source Linux graphics driver developers remain very busy preparing the open-source driver stack for Arc Graphics DG2/Alchemist hardware. While much of the base enablement work is complete and now with Linux 5.19 the compute support is even exposed to user-space, one of the areas seeing more work in recent times has been around power management.

Linux Full Disk Encryption Performance For The AMD Ryzen 7 PRO / HP Dev One
Linux Full Disk Encryption Performance For The AMD Ryzen 7 PRO / HP Dev One
24 June 09:09 AM EDT - Software - 23 Comments

One of the great defaults when installing Pop!_OS or receiving a pre-loaded laptop/desktop from System76 or the new HP Dev One is that it encourages full-disk encryption and prominently shown during the install process. I highly recommend full-disk encryption especially for laptops. As it's been a few years since running benchmarks looking at the overhead of LUKS encryption, here are some benchmarks of Pop!_OS 22.04 on the HP Dev One with the full disk encryption enabled and then a fresh install without encryption.

Fedora 37 Looks To Ship With Stratis Storage 3.1 Support
Fedora 37 Looks To Ship With Stratis Storage 3.1 Support
24 June 06:16 AM EDT - Fedora - Stratis 3.1 - 19 Comments

While many Red Hat open-source projects end up being relatively instant successes that then end up being widely adopted in the open-source community, Red Hat's Stratis Storage effort seems to be trending as one of the exceptions. Red Hat continues investing in Stratis but it doesn't seem to have the sizable adoption or widespread interest that tends to come with most of their projects. In any event, Fedora 37 later this year should ship with the newest Stratis tech.

23 June

Ubuntu Developers Have An Idea For Handling The Over-Eager Systemd OOMD App Killing
23 June 07:06 PM EDT - Ubuntu - systemd-oomd - 56 Comments

With the recent release of Ubuntu 22.04 LTS it is shipping systemd-oomd by default on their desktop for trying to better handle low-memory / out-of-memory situations. However, in real-world use systemd-oomd is too easily killing user-space applications like Firefox and Chrome when approaching memory pressure. This is a poor Ubuntu 22.04 user experience but the developers now have an idea for their approach to addressing this solution.

LightDM Display Manager 2022 Status Update: Not Much Going On
23 June 05:24 AM EDT - Ubuntu - LightDM - 22 Comments

From 2011 to 2017 while Ubuntu had been using the LightDM display manager developed by Canonical, their engineers were actively supporting it and making new releases to coincide with new Ubuntu Linux updates. But with Ubuntu now using GDM as its default desktop display manager, there hasn't been a new LightDM release in three years and not much in the way of upstream activity. Today Canonical's lead LightDM maintainer issued a status update for the project.

22 June

Patches Updated For Booting Linux On The Nintendo Wii U
22 June 01:55 PM EDT - Linux Kernel - Linux On The Wii U - 7 Comments

Back in March there were Linux kernel patches posted for review to boot Linux on the Nintendo Wii U game console after this Linux porting work has long been done out-of-tree. A new iteration of those Wii U enablement patches for the Linux kernel have now been posted.

AMD Posts Patch Enabling Vega APU/GPU Support For Blender's HIP Backend
22 June 05:41 AM EDT - Radeon - Vega HIP on Blender - 19 Comments

With the AMD Radeon "HIP" acceleration in Blender 3.2 with the Cycles back-end, an unfortunate early limitation is that this is limited to just AMD RDNA2 (Radeon RX 6000 series) graphics processors while prior generation RDNA1 GPUs have issues with some textures like those used in the benchmarks. This week though AMD did post a new patch for Blender enabling HIP support on Windows and Linux for Vega/GFX9 graphics.

AMDVLK 2022.Q2.3 Vulkan Driver Released With Some Performance Optimizations
22 June 04:22 AM EDT - Radeon - AMDVLK 2022.Q2.3 - 4 Comments

AMD today released a new update to AMDVLK, their official open-source Radeon Vulkan driver for Linux systems that is derived from their internal Vulkan driver sources while plumbed to use the open-source LLVM AMDGPU shader compiler back-end. For Linux gamers this driver doesn't remain as popular as Mesa's RADV but the update today does deliver on some game performance optimizations.

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