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Updated: 3 hours 36 sec ago

The Combined Impact Of Mitigations On Cascade Lake Following Recent JCC Erratum + TAA

Sun, 11/24/2019 - 23:37
Following the initial tests earlier this month from the disclosures of the JCC Erratum (Jump Conditional Code) that required updated Intel CPU microcode to address and on the same day the TSX Async Abort (TAA) vulnerability that required kernel mitigations to address, which I have run benchmarks of those CPU performance impacts individually, readers have requested tests looking at the current overall impact to the mitigations to date.

It's That Time Of The Year For The Annual Phoronix Premium Sale To Show Your Support

Sun, 11/24/2019 - 21:22
It's that time of the year for our annual promotion of Phoronix Premium for the US Thanksgiving / Black Friday / Cyber Monday sales week... Here is the latest on how you can show your support for our Linux and open-source news coverage and benchmarking while enjoying the site ad-free, multi-page articles on a single page, and other benefits...

KUnit Slated To Land With The Linux 5.5 Kernel For Expanding Kernel Unit Testing

Sun, 11/24/2019 - 21:12
As part of the KSelfTest updates sent in early for the Linux 5.5 merge window opening tonight/tomorrow, Google's KUnit is included in this pull request as the basic kernel unit testing framework...

The Open-Source NVIDIA Driver Will End Out 2019 In Poor Shape Still For Newer GPUs

Sun, 11/24/2019 - 20:49
For the imminent Linux 5.5 kernel cycle we have talked about exciting AMD Radeon and Intel graphics driver changes on deck from Navi OvrDrive overclocking to more Intel Tiger Lake and Jasper Lake bits, AMDGPU HDCP support, and other features queued. But what about the open-source NVIDIA "Nouveau" Linux driver?..

KDE Got More Polishing Ahead Of The Holidays While First KDE Frameworks 6 Sprint Started

Sun, 11/24/2019 - 20:35
It was a busy week in the KDE space...

GNUstep Might Deprecate Support For GNU's GCC In Favor Of LLVM Clang

Sun, 11/24/2019 - 15:53
GNUstep, the longstanding GNU Project implementing Apple's Cocoa frameworks, might end up deprecating support for the GNU Compiler Collection (GCC) to focus its compiler support on LLVM's Clang...

64-Bit ARM Updates Sent In Ahead Of The Linux 5.5 Cycle

Sun, 11/24/2019 - 14:47
Catalin Marinas who oversees the 64-bit ARM (ARM64 / AArch64) architecture code within the mainline kernel has already submitted his pull request early for the Linux 5.5 kernel cycle beginning tonight or early on Monday...

VirtualBox 6.1 Close To Release With 3D Improvements, Nested Hardware Virtualization

Sun, 11/24/2019 - 13:05
In addition to Oracle having shipped a Solaris update this past week, prior to calling it a weekend their virtualization crew released VirtualBox 6.1 RC1...

LLVM Developers Have Been Reviewing Work To Offset The Performance Hit From Intel JCC

Sun, 11/24/2019 - 07:41
With the Jump Conditional Code (JCC) Erratum that was made public earlier this month and ushered in new Intel microcode to mitigate this Skylake to Cascade Lake design defect, compiler/toolchain patches have been in the works to help offset the performance cost incurred from the updated microcode. Besides the GNU Assembler work we've talked about several times since JCC came to light, the LLVM folks have also been reviewing their comparable changes...

Rosewill RSV-4310 - Useful Revision To One Of The Best Value 4U Server Cases

Sun, 11/24/2019 - 04:17
Over the years at Phoronix we have easily close to forty if not more Rosewill 2U and 4U sever cases... Rosewill's server cases have been among the best value enclosures when not needing any extra features like hot-swap bays, etc. For under $100 USD, their Rosewill 4U cases have been a favorite due to the cost yet good quality, fan filter, etc. A new revision out this summer is the Rosewill RSV-4310 that appears to have replaced the likes of the RSV-R4000. The RSV-4310 4U enclosure does bring some nice minor updates to the base enclosure we've come to know and appreciate though is more costly.

Btrfs Gets A Big Improvement For More Robust RAID1 In Linux 5.5

Sun, 11/24/2019 - 01:55
David Sterba sent in his pull request early of the Btrfs file-system changes that are ready for merging into the Linux 5.5 merge window next week...

POWER9 Blackbird Performance On Ubuntu 19.04 vs. Ubuntu 19.10 Benchmarks

Sat, 11/23/2019 - 21:04
We have done a lot of benchmarks on Intel/AMD x86_64 for Ubuntu 19.10 for seeing how its performance is looking, but what about IBM POWER9 with the likes of the libre Raptor Blackbird? Here are some Ubuntu 19.04 vs. 19.10 POWER benchmarks I recently carried out...

NVIDIA's Proactive Memory Compaction Work Revised For The Linux Kernel

Sat, 11/23/2019 - 20:24
A few weeks back I wrote about NVIDIA's Nitin Gupta working on proactive memory compaction for the Linux kernel to more proactively compact memory rather than doing so on-demand when it can lead to high latencies for applications needing lots of huge-pages...

X.Org Server 1.20.6 Released With Many Bug Fixes - Helps XWayland, PRIME + Other Bits

Sat, 11/23/2019 - 20:04
While it's taking painfully long to get X.Org Server 1.21 organized for release, at least in the interim there continues to be new xorg-server 1.20 point releases that back-port many of the prominent fixes...

Linux 5.6 Will Bring Another Radeon Run-Time Power Management Improvement

Sat, 11/23/2019 - 15:46
While the Linux 5.5 cycle begins next week, looking ahead to early next year when the Linux 5.6 cycle will begin, there is expected to be another power management improvement coming for AMD Radeon graphics cards...

Various Game Emulators Are Faster On Mesa Drivers Now Thanks To OpenGL Threading

Sat, 11/23/2019 - 14:00
A few days ago 7 Days to Die saw a performance boost on Mesa Git from its "glthread" threading implementation while now a number of game emulators have seen similar whitelisting...

Intel SVM Support Published For Linux - Another Step On The March To Xe GPUs

Sat, 11/23/2019 - 13:01
Ending out the week is an exciting development in the Intel open-source graphics driver space... Shared Virtual Memory (SVM) support! This is another step towards their upcoming discrete Xe GPUs and ultimately their exciting oneAPI conquest...

Glimpse 0.1 Released As The Rebranded Fork Of The GIMP

Sat, 11/23/2019 - 05:25
The inaugural release of Glimpse is now available, the fork born out of calls for renaming The GIMP project to something not considered offensive...

RADV's ACO Back-End Is Helping Radeon Navi Linux Gaming Performance

Sat, 11/23/2019 - 04:09
It's been almost two months since last looking at the RADV ACO performance for this shader compiler back-end alternative to the AMDGPU LLVM code. ACO is making its debut in the upcoming Mesa 19.3 release while since the last round of testing have been more optimizations and fixes as well as getting the Navi/GFX10 support in place. In this article are some fresh benchmarks of the Vulkan RADV ACO support for not only Polaris and Vega but also the Radeon RX 5700 Navi graphics cards.

Linux 5.5 Cycle Kicks Off Next Week With Exciting Changes On Tap

Sat, 11/23/2019 - 02:23
The Linux 5.4 kernel is to be released on Sunday and that will in turn kick-off the Linux 5.5 merge window. Here is a look at some of the changes on the table for what will in turn be the first major stable kernel release of 2020...