Phoronix

We are now one week through the two week long Linux 5.7 kernel merge window where new/improved functionality is introduced. Here is a look at the changes so far for Linux 5.7...

C-SKY is a Chinese 32-bit CPU architecture intended for low-power devices from media boxes / DVRs to printers and other consumer electronics. C-SKY has also worked its way into a ~$6 development board. With its updates for the Linux 5.7 kernel are various additions to this maturing architecture support along with a speculative execution fix...

Last week Intel released an initial set of micro-benchmarks for their oneAPI Level Zero and with L0 support being plumbed into their open-source Intel Compute Runtime, this weekend I started toying around with some Level Zero benchmarks on a variety of Intel processors.

A new patch series sent out just under one month ago was providing opt-in L1 data cache flushing on context switching. That work has now been revived again and now with documentation added it's clear that this work is being done in response to a recent CVE being made public...

Ongoing work around Linux's exec() code should make it less deadlock prone in future kernel versions...

The Linux 5.7 kernel will bring random performance improvements as in /dev/random...

Kaidan is the open-source project that last year joined KDE as a Jabber/XMPP chat client. After a half year of work, Kaidan 0.5 has finally been released...

The perf subsystem continues to be quite lively with improvements and for Linux 5.7 is seeing a number of low-level improvements...

The second development release of the Phoronix Test Suite 9.6 cross-platform benchmarking software is now available for evaluation and testing...

On Friday I posted some initial numbers looking at the LVI mitigation impact when using the LLVM Clang compiler with that open-source, multi-platform compiler having landed its mitigation this week for Intel's Load Value Injection (LVI) vulnerability that was disclosed in March. Through the weekend I have been running some additional tests of this compiler-based mitigation and in this article are some numbers off Cascade Lake Refresh, which while recently released is reported by Intel to still be vulnerable to this new disclosure.

Both of IBM's s390 and POWER CPU architectures are seeing secure/protected guest virtual machine support with KVM on the in-development Linux 5.7 kernel...

While XFS dates back to the 90's and has been in the Linux kernel for nearly two decades, this proven file-system continues aging gracefully and continuing to see more improvements. With Linux 5.7 is another step forward for XFS...

KDE developers managed to squeeze some long-problematic I/O optimizations into the KDE code-base this week along with other enhancements to make for a nice first week of April...

The work led by VMware on allowing the Direct Rendering Manager's TTM memory management code support huge page tables has been added to Linux 5.7...

An important infrastructure change with the Linux 5.7 kernel now allows the ability to create a process in a different cgroup from the parent process...

The MIPS architecture improvements for Linux 5.7 are headlined by Loongson support improvements for those Chinese manufactured MIPS64 platforms...

One of the most promising open-source game projects of the 2010s when it comes to gameplay and visual quality is the Unvanquished project but sadly in recent years has been fairly quiet although new code continues to be contributed to their repository. It looks like in the weeks ahead could finally be a new release...

As we have been expecting the new Samsung-developed file-system driver for Microsoft's exFAT has successfully landed into the Linux 5.7 kernel to replace the existing exFAT driver added in Linux 5.4 last year after Microsoft published the file-system specifications and gave their blessing to have the support mainlined in the Linux kernel...

Some exciting ARM SoCs and devices are supported by the mainline Linux 5.7 kernel...

With our early benchmarking of Ubuntu 20.04 in its current nearing the end of development state, we've been seeing Ubuntu 20.04 boosting Intel Xeon Scalable performance, running well with AMD EPYC Rome, and good AMD Ryzen performance, among other tests. Strangely though the one platform where I've found Ubuntu 20.04 hard regressing so far is with the Dell XPS 7390 Ice Lake...

This week marked the release of ROCm 3.3 as the newest version of the Radeon Open Compute stack...

Added over a year ago to the mainline Linux kernel was the high resolution mouse wheel scrolling support. While the support landed on kernel-side for to provide "buttery smooth" wheel scrolling, the work has yet to be wrapped up on the user-space side for making this a reality on the Linux desktop...

It's been another busy week for Mesa's RADV Vulkan driver with the Valve-backed ACO compiler back-end alternative to AMDGPU LLVM...

With Steam and other online gaming platforms seeing record usage in recent weeks as a result of home isolation around the world as a result of the coronavirus, one of the matters of curiosity has been how this will impact the Linux gaming percentage...

Greg Kroah-Hartman on Friday sent in his "char/misc" updates for the Linux 5.7 kernel several days later than normal...

Valve is finishing up work on Proton 5.0-6 as the next version of their Wine downstream that powers Steam Play. With Proton 5.0-6 are some promising improvements...

The recently covered NIR vectorization pass ported from AMD's ACO back-end for improving the open-source Intel Linux graphics performance has landed now in Mesa 20.1...

Ada is a beautiful programming language when it comes to code safety with it continuing to be used by aircraft and other safety critical systems. There is now Ada++ as an unofficial fork of the language focused on making the language more accessible and friendlier in an era of the likes of Rust and Golang attracting much interest...

The PCI subsystem changes were sent out today for the ongoing Linux 5.7 kernel merge window...

Made public in March was the Load Value Injection (LVI) attack affecting Intel CPUs with SGX capabilities. LVI combines Spectre-style code gadgets with Meltdown-type illegal data flows to bypass existing defenses and allow injecting data into a victim's transient execution. While mitigations on the GNU side quickly landed, the LLVM compiler mitigations were just merged today.

For those with extra time on their hands due to being at home and social distancing, Canonical released the Ubuntu 20.04 LTS beta today for testing...

Last month I noted a new Linux driver for a buggy and funky looking mouse. A special driver was created by a community developer due to not all the mice button working otherwise due to not abiding by HID specifications. Now that the driver was merged for Linux 5.7, Linus Torvalds had words to share on this open-source driver...

POCL 1.5 has been released as the "Portable CL" implementation for running OpenCL on CPUs and other devices with LLVM back-ends...

Intel on Thursday released version 1.3 of their Deep Neural Network Library (DNNL) formerly known as MKL-DNN in offering a open-source performance library for deep learning applications...

SUSE's Takashi Iwai who oversees the sound subsystem for the Linux kernel sent in his changes on Thursday that are ready for the 5.7 kernel...

One of the common criticisms for those trying to use Clear Linux on the desktop is that it lacks easy access to proprietary packages like Google Chrome and Steam. There has been plumbing within its swupd package/bundle management system to support third-party repositories to expand the ecosystem and now we're finally seeing that happen...

While NetBSD 9.0 has been out since mid-February, for those still on the NetBSD 8 series the NetBSD 8.2 milestone is now available with various fixes. As a result of the coronavirus, the NetBSD 7 series is also being extended...

Andy Shevchenko submitted on Tuesday the x86 platform driver updates targeting the Linux 5.7 kernel merge window...

For the past two months we have been testing the System76 Thelio Major and it's been working out extremely well with performance and reliability. The Thelio Major offering with options for Intel Core X-Series or AMD Ryzen Threadripper and resides between their standard Thelio desktop with Ryzen/Core CPUs and the Thelio Massive that sports dual Intel Xeon CPUs.

For years we have been looking forward to X-Plane with a new Vulkan renderer to replace its aging OpenGL renderer. Finally today the X-Plane 11.50 Beta has been made public for this realistic flight simulator that supports Metal on Apple platforms and Vulkan everywhere else...

Following last month's release of GNOME 3.36 with its many new features and performance improvements, GNOME 3.36.1 is out today with the first batch of updates/fixes to this H1'2020 open-source desktop...

Well known open-source AMD OpenGL driver developer Marek Olšák has enabled more Linux games to run with Mesa's GLTHREAD functionality enabled for helping with the performance...

Ahead of the Ubuntu 20.04 LTS release later this month, the Canonical folks working on LXD for Linux containers and VMs have released LXD 4.0 LTS...

SUSE's David Sterba sent in the Btrfs file-system updates this week for the Linux 5.7 kernel...

Yesterday we noted Intel's programming reference manual being updated with new Golden Cove instructions for Sapphire Rapids and Alder Lake and with that Intel's open-source developers have begun pushing their changes to the compilers. The latest updates add TSXLDTRK, a new HYBRID bit for Core+Atom hybrd CPUs, and a new SERIALIZE instruction. After GCC was receiving the patch attention yesterday, LLVM is getting its attention today...

Basically a half-week after Linux 5.6 shipped as stable, we are up to the second point release of it...

Days after AMD announced their full Ryzen 4000 series mobile CPU line-up, Intel has now introduced their 10th Gen Core H-series processors...

The month of April usually sees the new annual GNU Compiler Collection (GCC) feature releases and for GCC 10 in the form of GCC 10.1 as the first stable release in the series does stand chances of releasing this month...

A few months back when we last looked at the performance impact of having SELinux enabled there was a hit but not too bad for most workloads. But we'll need to take another look soon as with the Linux 5.7 kernel are some performance improvements and more for SELinux...

While many of you are users of Mesa Git for experiencing the bleeding-edge graphics drivers especially if you are a gamer wanting peak performance, for those on the Mesa stable series the Mesa 20.0.3 update has now shipped...