Phoronix

With yesterday's overview and benchmarks of Intel's Jump Conditional Code Erratum one of the areas where the performance impact of the updated CPU microcode exceeding Intel's 0~4% guidance was on the web browser performance. Now with more time having passed, here are more web browser benchmarks on both Chrome and Firefox while comparing the new CPU microcode release for the JCC Erratum compared to the previous release. Simply moving to this new CPU microcode does represent a significant hit to the web browser performance.

As of this morning LibreOffice 6.4 was branched from master and the beta release tagged with those LO 6.4 Beta binaries expected out shortly...

AMD on Tuesday released their Radeon Pro Software for Enterprise 19.Q4 for Linux package as their newest quarterly driver release intended for their professional graphics card offerings...

The Khronos Group has been expanding into a lot of new areas in recent times from OpenXR to 3D Commerce to NNEF and now forming an exploratory group for creating an analytic rendering API...

The second development release of Phoronix Test Suite 9.2-Hurdal is now available for open-source, cross-platform and fully-automated benchmarking...

Another Intel change being sent off for Linux 5.4 and to be back-ported to current stable series is disabling of HPET for Coffee Lake systems...

Over the past year Code Sourcery / Mentor Graphics has been working extensively on the new AMD Radeon "GCN" back-end for the GCC code compiler. With the code that is found in GCC 9 and up to now in GCC 10 hasn't supported OpenMP/OpenACC parallel programming interfaces but that could soon change with patches under review...

Now that Intel lifted its embargo on the "Jump Conditional Code" erratum affecting Skylake through Cascade Lake processors, while Intel's own Clear Linux was first to carry these patches they have now been sent out on the Binutils mailing list for trying to get the JCC optimization patches into the upstream Binutils/GAS code-base...

Merged to the mainline Linux kernel last week was a driver providing VirtualBox guest shared folder support with the driver up to now being out-of-tree but important for sharing files between the host and guest VM(s). While the driver was part of Linux 5.4-rc7, Linus Torvalds decided to delete this driver on Tuesday...

This morning I provided a lengthy look at the performance impact of Intel's JCC Erratum around the CPU microcode update issued for Skylake through Cascade Lake for mitigating potentially unpredictable behavior when jump instructions cross cache lines. Of the many benchmarks shared this morning in that overview, there wasn't time for any gaming tests prior to publishing. Now with more time passed, here is an initial look at how the Linux gaming performance is impacted by the newly-released Intel CPU microcode for this Jump Conditional Code issue.

Of the 77 security advisories Intel is making public and the three big ones of the performance-sensitive JCC Erratum, the new ZombieLoad TAA (TSX Asynchronous Abort), and iTLB Multihit No eXcuses, there are also two fixes to their kernel graphics driver around security issues separate from the CPU woes...

The Linux kernel has just received its mitigation work for the newly-announced TSX Asynchronous Abort (TAA) variant of ZombieLoad plus revealing mitigations for another Intel CPU issue... So today in addition to the JCC Erratum and ZombieLoad TAA the latest is iITLB Multihit (NX) - No eXcuses...

In addition to the JCC erratum being made public today and that performance-shifting Intel microcode update affecting Skylake through Cascade Lake, researchers also announced a new ZombieLoad side-channel attack variant dubbed "TSX Asynchronous Abort" or TAA for short...

Intel is today making public the Jump Conditional Code (JCC) erratum. This is a bug involving the CPU's Decoded ICache where on Skylake and derived CPUs where unpredictable behavior could happen when jump instructions cross cache lines. Unfortunately addressing this error in software comes with a performance penalty but ultimately Intel engineers are working to offset that through a toolchain update. Here are the exclusive benchmarks out today of the JCC erratum performance impact as well as when trying to recover that performance through the updated GNU Assembler.

Mozilla, Fastly, Intel, and Red Hat have announced the Bytecode Alliance as a new initiative built around WebAssembly and focused on providing a secure-by-default bytecode that can run from web browsers to desktops to IoT/embedded platforms...

LinuxBoot is approaching two years of age as the effort led by Facebook and others for replacing some elements of the system firmware with the Linux kernel...

For about three years now GNOME's SVG rendering library has been transitioning to Rust. This library, librsvg, now makes further use of Rust around its CSS parsing code and Mozilla's Servo is doing some of that heavy lifting...

In making it more easy to update Coreboot system firmware, the ability to update Coreboot via the Linux Vendor Firmware Service (LVFS) with Fwupd is finally being worked out...

The Adreno 640 GPU that is used by Qualcomm's Snapdragon 855/855+ SoCs is now working with the open-source Freedreno Gallium3D OpenGL and "TURNIP" Vulkan drivers with the newest Mesa 20.0 development code...

A change to look forward to with Mesa 20.0 due out next quarter is Vulkan timeline semaphore support (VK_KHR_timeline_semaphore) for Intel's "ANV" open-source driver...

Taking place at the end of October during the Linux Foundation events in Lyon, France was the GStreamer Conference to align with the annual developer festivities...

Sunday marked the release of KDE Frameworks 5.64 as the latest monthly update to this collection of libraries complementing Qt5...

Chrome has successfully shamed web-sites not supporting HTTPS and now they are looking to call-out websites that do not typically load fast...

With the Linux 5.4 kernel set to be released in the next week or two, here is a look at the performance going back to the days of Linux 4.16 from early 2018. At least the Linux kernel continues picking up many new features as due to security mitigations and other factors the kernel performance continues trending lower.

SUSE and other companies like DigitalOcean have been working on Linux core scheduling to make virtualization safer particularly in light of security vulnerabilities like L1TF and MDS. The core scheduling work is about ensuring different VMs don't share a HT sibling but rather only the same VM / trusted applications run on siblings of a core...

From System76 setting up their own manufacturing facility for Linux desktops to Dell offering more Linux laptop options, the demand for pre-loaded Linux PCs continues to increase. One of the smaller Linux PC vendors also now expanding is German-based TUXEDO Computers...

Shortwave is a new Internet radio player built for GNOME with GTK3 and has been in development the past year...

The goal for Ubuntu 20.04 is to ship with Python 2 removed since Py2 will be end-of-life after the start of the year and this next Ubuntu Linux release is a Long-Term Support release, but there still are many Python 2 depending packages left currently in Debian unstable and Ubuntu's "Focal Fossa" archive...

Arch Linux has updated the behavior when installing the linux, linux-lts, linux-zen, and linux-hardened kernel options on this popular distribution...

Linux 5.4-rc7 was just released as the newest test candidate of the maturing Linux 5.4 kernel. At this stage it's looking like an eighth weekly RC will be warranted next weekend before officially releasing Linux 5.4.0 on 24 November...

Last month I posted benchmarks looking at the Windows 10 vs. Linux OpenGL and Vulkan graphics performance for the Ice Lake "Gen11" graphics. But for those wondering about the CPU/system performance between Windows and Linux for the Core i7-1065G7 with the Dell XPS 7390, here are those benchmarks as we compare the latest Windows 10 to Ubuntu 19.10 and Intel's own Clear Linux platform.

Longtime Linux game developer Timothee Besset has outlined the support introduced by Valve this week in their latest Steam Linux client beta for supporting Linux namespaces / containers. This experimental functionality may in the end provide better support for 32-bit compatibility as more Linux distributions focus solely on x86_64 packages, reducing some of the fragmentation/library conflicts between some Linux distributions and Steam, and other headaches currently plaguing the Steam Linux space...

While Linux 5.4 is rolling out in about two weeks, the out-of-tree Reiser4 file-system has just been updated for Linux 5.3 support...

Over the past year and a half the VKMS Linux DRM driver has come together as the "virtual kernel mode-setting" implementation for headless systems and other environments not backed by a physical display. Interestingly being tacked on their TODO list now is VRR (Variable Refresh Rate) support. Separately, the prominent VKMS developer is now employed by AMD...

Pardon for the rather slow pace of new Phoronix content over the past week (in particular, the lack of big benchmark articles) due to my wife giving birth early and being in the hospital for a few days, but the remainder of November is set to be quite exciting on the Linux/open-source performance front. Here is some of what else is on tap for November...

Taking place 4 and 5 November in San Francisco was the OpenZFS Developer Summit. This two-day open-source ZFS developer summit made possible by Intel, Delphix, Datto, and OSNexus had a lot of interesting presentations from the state of ZFS TRIM/Discard to debugging topics...

The Thunderbolt changes have been merged to char-misc ahead of the upcoming Linux 5.5 merge window...

The first alpha release of the forthcoming OpenMandriva Lx 4.1 is now available for testing with this Clang-built Linux distribution that originates back to the days of Mandrake...

It's been another busy week in KDE land with developers working through the massive code-bases comprising the KDE desktop environment on a variety of features and fixes...

Besides X-Plane being one of the most realistic PC-based flight simulators, this flight simulator from Laminar Research has long supported Linux. Out this weekend is X-Plane 11.40 as the latest update and the last major release before they roll-out their long-awaited Vulkan graphics API support...

With Ubuntu 19.10 bringing some CPU/system performance changes compared to earlier Ubuntu releases as a result of compiler/toolchain upgrades, the newer kernel, and more, here is a quick weekend look at how the Ubuntu 19.10 performance compares across ten different AMD Ryzen and Intel Core systems...

As an alternative to PulseAudio's existing RTP implementation, a new GStreamer-based Real-Time Transport Protocol has been introduced...

Taking place this past week in San Francisco was the annual OpenZFS Developer Summit. As usual, Matthew Ahrens as the co-founder of Sun ZFS and current OpenZFS contributor at Delphix talked about the state of the open-source ZFS efforts in his keynote...

Among other EXT4 file-system changes en route for the upcoming Linux 5.5 kernel is a new direct I/O read implementation...

Coming out Friday night was a series to address a "critical" scheduler issue with the Linux kernel...

While the Linux 5.4 cycle is quickly winding down and with DRM-Next's cut-off crossing, AMD has sent in a last minute batch of changes it's targeting for the upcoming Linux 5.5 merge window...

Intel's HMEM DAX driver is being added to Linux 5.5 for use-cases like their Optane DC Persistent Memory...

Rav1e has been in development for more than one year now as the "safest and fastest AV1 encoder" thanks to being written in Rust while now their first official release is available...

Radeon Software for Linux 19.30 has been the driver release branch since July for the AMD Linux packaged driver stack. That 19.30 driver was introduced with the AMD Radeon RX 5700 "Navi" support while now a slightly updated stack was released...

Valve earlier today pushed out Proton 4.11-8 as the newest update to their Wine-based software powering Steam Play for handling Windows games on Linux...