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GCC 4.7 Link-Time Optimization Performance

With the recent interest regarding Link-Time Optimization support within the Linux kernel by GCC, here are some benchmarks of the latest stable release of GCC (v4.7.1) when benchmarking several common open-source projects with and without the performance-enhancing LTO compiler support.
21 August 2012 - 17 Comments

Ubuntu's Unity Decision Affects 2D Performance Too

Last week I delivered OpenGL/3D benchmarks of Ubuntu 12.10 when comparing the performance of the default Unity desktop to the now-defunct Unity 2D environment. Canonical's decision to kill Unity 2D means that for those now forced to use the Compiz-based Unity may experience lower frame-rates, high power consumption with Unity-over-LLVMpipe, and other differences. Additional testing has shown how Unity is affecting the 2D graphics performance.
20 August 2012 - 21 Comments

Intel Ivy Bridge: GCC 4.8 vs. LLVM/Clang 3.2 SVN

Kicking off the Linux benchmarks this weekend are some early numbers from the GCC 4.8 and LLVM/Clang 3.2 development compilers when running on Intel's latest-generation Core i7 "Ivy Bridge" processor. GCC 4.8 and LLVM/Clang 3.2 are still months away from being formally released, but this article provides a glimpse at how the open-source compiler battle is panning out.
18 August 2012 - 22 Comments

Ubuntu's Unity Has Room To Improve Performance

Following yesterday's news that Ubuntu 12.10 will drop the Unity 2D desktop, I carried out some quick tests comparing the latest state of the Unity desktop with Compiz against the lightweight Unity 2D desktop that's now being removed. To not much surprise, the composited Unity desktop still has some performance shortcomings for OpenGL workloads compared to Unity 2D.
17 August 2012 - 15 Comments

Running Wayland: It Works, But A Lot Of Work Remains

Following the news shared today that Ubuntu's delayed their Wayland System Compositor adoption from Ubuntu 12.10 to at least Ubuntu 13.04 there was the more positive news that there's an updated third-party spin of an Ubuntu derivative running Wayland. This article has some more information on that new "RebeccaBlack OS" release along with screenshots that provide a glimpse of where the Wayland adoption is at today.
10 August 2012 - 85 Comments

Ubuntu Delays Wayland System Compositor

Ubuntu 12.10 will not be shipping with a Wayland-based system compositor as was once hoped for, but the experimental system compositor can be enabled from a PPA in a very primitive state.
10 August 2012 - 5 Comments

VMware Fusion Stuns VirtualBox In CPU Tests

Aside from VMware virtualization smacking Oracle VirtualBox when it comes to the OpenGL support that's passed through to VM guests, VMware Fusion 4 also does a nice job at outperforming VirtualBox when it comes to computational-focused workloads.
10 August 2012 - 11 Comments

VMware Virtualization With OpenGL Still Smacks Oracle VirtualBox

Earlier this year I said VMware's virtual GPU driver was running fast for Linux -- in comparison to Oracle's VM VirtualBox 3D guest acceleration support. This continues to be the case with VMware's OpenGL stack leading the way with superior support and performance. Recently I ran some desktop virtualization tests under VMware Fusion 4.1.3 and Oracle VM VirtualBox 4.1.18 from the Retina MacBook Pro with OS X 10.8 Mountain Lion host. Even with the OS X host, VMware's 3D support exposed to the Ubuntu 12.04 LTS virtualized guest was much faster.
8 August 2012 - 16 Comments

AHCI vs. IDE Modes With A SATA 3.0 SSD On Linux

Days ago benchmarks were shared from OpenBenchmarking.org that compared AHCI and IDE modes under Linux when it came to the resulting disk performance. There was a fair amount of interest generated out of that so some AHCI vs. IDE mode comparisons from a Serial ATA 3.0 SSD on an Ubuntu Linux host were benchmarked at Phoronix.
5 August 2012 - 17 Comments

Intel Ivy Bridge Is Okay On Linux Power Usage

With talk of a massive power regression in the recently released Linux 3.5 kernel, yesterday I began benchmarking some different systems with varying versions of the Linux kernel looking for any new kernel power regressions on different hardware.
31 July 2012 - 1 Comment

440 software articles published on Phoronix.
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