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Software

Apple's LLVM 3.1 Clanging On Intel Sandy Bridge

After delivering benchmarks in March showing the performance gains of GCC 4.7 on Intel's Sandy Bridge processors, here's a look at how the latest LLVM/Clang 3.1 compiler from Apple is shaping up for these latest Intel CPUs.
2 April 2012 - 14 Comments

A Call To "Kill All Proprietary Drivers For Good"

Next week at the 6th annual Linux Foundation Collaboration Summit in San Francisco, two Qualcomm Atheros engineers will be speaking about their Linux device driver development experiences and will go as far as calling for all proprietary drivers to be killed for good. They talk not just about killing proprietary drivers for Linux, but for all operating systems. Can the plans they lay out to kill all proprietary drivers work or is this just a big pipe-dream?
29 March 2012

Running Ubuntu 12.04 With The Liquorix Kernel

After performing a fresh Linux installation, most users are concerned with customizing their desktop or application set for their needs, but an increasing number of enthusiasts tend to be looking at their kernel. The Zen kernel was once very popular, but of increasing popularity amongst die-hard Linux enthusiasts is the Zen-related Liquorix kernel. While it claims to offer superior performance for common workloads, is this really the case? Here are some benchmarks of the stock Ubuntu 12.04 kernel versus the 3.2 kernel offered by Liquorix.
27 March 2012 - 12 Comments

Testing Out The Btrfs Mount Options On Linux 3.2

Earlier this month I benchmarked all the major Linux file-systems of Ubuntu 12.04: ReiserFS, JFS, EXT2, EXT3, EXT4, Btrfs, and XFS. While Btrfs performed well with Ubuntu 12.04 LTS, it was not always the fastest although it does offer the most advanced feature-set. For those looking to tune a Btrfs file-system for performance, published now are some reference benchmarks showing the Linux Btrfs performance with varying mount options.
26 March 2012 - 23 Comments

Intel Sandy Bridge Shapes Up On GCC 4.7 Compiler

Back in January I wrote about how open-source compilers are quickly maturing for Intel Sandy Bridge CPUs and offering early support for Intel Ivy Bridge and Intel Haswell processors. Both GCC and LLVM have been quick to take advantage of the new instruction set extensions and other capabilities of these latest -- and very impressive -- Intel processors. With the release of GCC 4.7 quickly approaching, here is an updated set of GNU Compiler Collection Fortran/C/C++ benchmarks from the Intel Core i7 3960X Sandy Bridge Extreme Edition test-bed.
18 March 2012 - 5 Comments

Ubuntu 12.04 LTS - Benchmarking All The Linux File-Systems

When running Linux file-system benchmarks at Phoronix it is most often a comparison of EXT4 vs. Btrfs, since they are the "hot" Linux file-systems at the moment. Sometimes others like ZFS, Reiser4, and XFS also join the party. In this article is a look at all of the Linux file-systems with install-time support under the forthcoming Ubuntu 12.04 LTS. When carrying out clean installations each time with changing out the root file-system and using the default mount options, ReiserFS, JFS, EXT2, EXT3, EXT4, Btrfs, and XFS are all being compared in this article.
16 March 2012 - 30 Comments

Linux 3.3 Kernel: Btrfs vs. EXT4

It's that time of the Linux kernel development cycle again... Here are benchmarks of the EXT4 and Btrfs file-systems with the soon-to-be-released Linux 3.3 kernel.
2 March 2012 - 40 Comments

Intel Sandy Bridge RC6 Is Good To Go

It looks like the debacle concerning RC6 power-savings support for Intel Sandy Bridge hardware is finally behind us. Intel thinks everything is worked out and ready to be enabled upstream (again) with the next Linux 3.4 kernel cycle and Canonical has enabled RC6 by default in Ubuntu 12.04 LTS. Here are some tests showing the performance benefits and power-saving abilities of using the RC6 hardware feature on Sandy Bridge processors.
27 February 2012 - 3 Comments

Gaming/Graphics Performance On Unity, GNOME, KDE, Xfce

It is going on a year since showing how Unity, Compiz, GNOME Shell & KWin affect graphics/gaming performance, so here is an updated 2012 look. In this article are a variety of OpenGL benchmarks run under the current latest desktops as will be found in Ubuntu 12.04 LTS: Unity, Unity 2D, GNOME Shell, GNOME Classic, KDE Plasma, and Xfce. AMD and NVIDIA graphics were tested with both the latest closed and open-source drivers.
8 February 2012 - 43 Comments

Compilers Mature For Intel Sandy/Ivy Bridge, Prep For Haswell

The leading open-source code compilers -- namely the GNU Compiler Collection (GCC) and LLVM/Clang -- now have maturing support for Intel's Sandy Bridge microarchitecture with further optimizations for the forthcoming Ivy Bridge successor. With the current and next-generation Intel support covered, open-source compiler developers have already moved onto beginning work for supporting Intel's Haswell microarchitecture that will not be launched until 2013.
27 January 2012 - 1 Comment

453 software articles published on Phoronix.
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