Linux 4.14 vs. 4.20 Performance Benchmarks - The Kernel Speed Difference For 2018

As some additional end-of-year kernel benchmarking, here is a look at the Linux 4.14 versus 4.20 kernel benchmarks on the same system for seeing how the kernel performance changed over the course of 2018. Additionally, Linux 4.20 was also tested a second time when disabling the Spectre/Meltdown mitigations that added some performance overhead to the kernel this year.

19 Minutes Ago - Linux Kernel - Linux 4.14 vs. 4.20 - 1 Comment
Qt For Python 5.12 Now Available

Building off the Qt 5.12 LTS release from the beginning of December, Qt For Python 5.12 is now available so Python coders can utilize this latest version of the Qt5 tool-kit for building graphical user interfaces.

83 Minutes Ago - Qt - Qt 5.12 + Python 3 - 1 Comment
Ubuntu 18.04 LTS Now Available On Select Dell Precision Laptops

While it's great that Dell offers the ability to have Ubuntu Linux pre-loaded on select systems, one of their shortcomings is that they are often quite slow in supporting new Ubuntu LTS releases. At least now for select Dell Precision mobile workstation laptops, they have finally switched over to Ubuntu 18.04 LTS.

117 Minutes Ago - Ubuntu - Dell Precision + Ubuntu 18.04 LTS - Add A Comment

17 December

Five-Way Linux OS Comparison On Amazon's ARM Graviton CPU

Last month Amazon rolled out their "Graviton" ARM processors in the Elastic Compute Cloud. Those first-generation Graviton ARMv8 processors are based on the ARM Cortex-A72 cores and designed to offer better pricing than traditional x86_64 EC2 instances. However, our initial testing of the Amazon Graviton EC2 "A1" instances didn't reveal significant performance-per-dollar benefits for these new instances. In this second round of Graviton CPU benchmarking we are seeing what is the fastest of five of the leading ARM Linux distributions.

17 December 02:22 PM EST - Operating Systems - 1 Comment
Enabling Intel Fastboot Support By Default Brought Up, Again

The Intel DRM "Fastboot" option is what allows skipping a mode-set upon the device initalization during the Linux boot process to allow for a slick and smooth Linux desktop boot experience free of any excess flickers. While Intel Fastboot has been an option for years, it isn't yet the default behavior for this graphics driver.

17 December 10:28 AM EST - Intel - Intel DRM Fastboot - 17 Comments

16 December

15 December

14 December

FreeBSD ZFS vs. Linux EXT4/Btrfs RAID With Twenty SSDs

With FreeBSD 12.0 running great on the Dell PowerEdge R7425 server with dual AMD EPYC 7601 processors, I couldn't resist using the twenty Samsung SSDs in that 2U server for running some fresh FreeBSD ZFS RAID benchmarks as well as some reference figures from Ubuntu Linux with the native Btrfs RAID capabilities and then using EXT4 atop MD-RAID.

14 December 02:48 PM EST - Storage - 35 Comments
A Look At The Clear Linux Performance Over The Course Of 2018

With the end of the year quickly approaching, it's time for our annual look at how the Linux performance has evolved over the past year from graphics drivers to distributions. This year was a particularly volatile year for Linux performance due to Spectre and Meltdown mitigations, some of which have at least partially recovered thanks to continued optimizations landing in subsequent kernel releases. But on the plus side, new releases of Python, PHP, GCC 8, and other new software releases have helped out the performance. For kicking off our year-end benchmark comparisons, first up is a look at how Intel's performance-optimized Clear Linux distribution evolved this year.

14 December 06:00 AM EST - Operating Systems - 5 Comments
AMD Adding STIBP "Always-On Preferred Mode" To Linux

Initially during the Linux 4.20 kernel merge window with the STIBP addition for cross-hyperthread Spectre V2 mitigation it was turned on by default for all processes. But that turned out to have a sizable performance hit so the behavior was changed to only turn it on for processes under SECCOMP or when requested via the PRCTL interface. However, AMD is landing a patch that for select CPUs will have an always-on mode as evidently that's preferred for some AMD processors.

14 December 04:00 AM EST - Hardware - Single Thread Indirect Branch Predictors - 9 Comments

Past 30 Days Of News | Articles & Reviews | News Archives | RSS Feed