Software Archives
Benchmarking LLVM's Clang OpenMP Support Against GCC

With it looking like LLVM Clang 3.5 might finally have OpenMP support, I tested out Intel's latest out-of-tree LLVM/Clang OpenMP code to see how the performance compares to GCC for this multi-processing API. Overall, the Clang results increase the level of competition against GCC.

29 May 2014 - 7 Comments
Using PowerTOP 2.6 Saves Power, Extends Battery Life On Ubuntu 14.04

With the release of Intel's PowerTOP 2.6 a few days ago I have done some benchmarking using an ASUS Zenbook Prime ultrabook to see the impact of the power consumption while running on battery for a clean, stock install of Ubuntu 14.04 LTS 64-bit and then did the same tests again after having PowerTOP 2.6 optimize the system so it's in a good power standing. Beyond testing the stock Linux 3.13 kernel, then I carried out the same tests again when using the Linux 3.15 kernel in its very latest development state.

24 May 2014 - 21 Comments
6-Way Desktop Comparison On Linux Mint 17

There's been many requests to run some new OpenGL and 2D performance benchmarks under different Linux desktop environments. With the imminent release of Linux Mint 17 and it shipping the latest version of the increasingly-popular Cinnamon Desktop Environment, here's a six-way desktop performance comparison using Intel graphics on Linux Mint 17.

19 May 2014 - 31 Comments
ACPI CPUfreq vs. Intel P-State Scaling With Linux 3.15

For this weekend's Linux benchmarks we are looking at the performance of the Intel P-State and ACPI cpufreq drivers and comparing their scaling governor options when testing from an Intel Core i7 Extreme Edition system running with the Linux 3.15 development kernel.

17 May 2014 - 19 Comments
GCC vs. LLVM Clang On NVIDIA's Tegra K1 Quad-Core Cortex-A15

Recently I posted new benchmarks showing LLVM's Clang compiler performing well against GCC from AMD's x86-based Athlon APUs with the performance of the resulting binaries being quite fast but not without some blemishes for both of these open-source compilers. In seeing how the compiler race is doing in the ARM space with many ARM vendors taking interest in LLVM/Clang, here's some fresh benchmarks of both compilers on NVIDIA's Tegra K1 SoC found by the Jetson TK1 development board.

15 May 2014 - 12 Comments
EXT4 vs. XFS vs. Btrfs HDD Benchmarks On Linux 3.15

After earlier in the week delivering solid-state drive file-system benchmarks in comparing the Linux 3.15 FS performance to Linux 3.14 stable, now it's time to do a Linux 3.14 vs. 3.14 file-system performance comparison with a traditional hard drive. The file-systems being benchmarked here are EXT4, XFS, and Btrfs.

10 May 2014 - 9 Comments
Linux 3.15 SSD File-System Benchmarks

Now that kernel development activity is settling down for the Linux 3.15 kernel, here are some benchmarks of the EXT4, XFS, F2FS, and Btrfs file-systems compared to the stable Linux 3.14 kernel performance.

8 May 2014 - 8 Comments
Ubuntu 14.04 On Amazon EC2: Xen PV vs. HVM

A common benchmark request at Phoronix lately has been to compare the Xen PV (para-virtualization) performance to Xen HVM (Hardware-assisted virtualization). Well, now that Ubuntu 14.04 LTS has been released, here's some benchmarks from within Amazon's EC2 compute cloud when comparing Ubuntu 14.04 Server PV and HVM instances.

28 April 2014 - 3 Comments
Clang Fights GCC On AMD's Athlon AM1 APU With Jaguar Cores

A few days ago I did my latest benchmarks of GCC vs. LLVM/Clang and that was using an Intel Core i7 4770K "Haswell" processor. The tables have now turned and in this article are GCC vs. LLVM Clang benchmarks of the AMD Athlon 5350 APU with four Jaguar CPU cores.

22 April 2014 - 10 Comments
A Quick Look At GCC 4.9 vs. LLVM Clang 3.5

Following my most recent GCC 4.9 benchmarks for the open-source compiler that should be officially released next week, I ran some benchmarks of the GCC compiler results against LLVM's Clang 3.5 compiler in its latest SVN state. Here's the data for those curious how the very latest compiler code is comparing between GCC and LLVM/Clang.

16 April 2014 - 12 Comments
GCC 4.9 Compiler Optimization Benchmarks For Faster Binaries

For those curious about the impact of modern compiler tuning CFLAGS/CXXFLAGS when using the GCC 4.9 compiler with an Intel Core i7 "Haswell" processor, here are many benchmarks of many C/C++ code-bases when testing a variety of compiler optimization levels and other flags.

14 April 2014 - 22 Comments
Trying Out The Latest Wayland Linux Desktops With RBOS

With last weekend marking an update to the most commonly used Wayland Live CD, I decided to try it out and the different desktop environments that it ships using all the latest code, including the latest development code of Wayland/Weston and the various tool-kits.

25 March 2014 - 5 Comments
Early Benchmarks Of The Linux 3.14 Kernel

Now that most of "the scary stuff" for Linux 3.14 has been taken care of, it's time to benchmark this next major kernel release. The Linux 3.14 kernel has many major features added so there's plenty of benchmarks abound while in this article is a comparison of the 3.12, 3.13, and 3.14 Git kernels from an Intel Ultrabook.

17 February 2014 - 6 Comments
Clang's Competition For GCC On Intel Haswell

After a few days ago showing LLVM Clang 3.4 running very well on AMD's Kaveri APU, here are some benchmarks of GCC 4.8.2, the latest GCC 4.9 development snapshot, and LLVM Clang 3.4 from an Intel Core i5 "Haswell" system running Ubuntu 14.04 with the Linux 3.13 kernel.

6 February 2014 - 29 Comments
Intel Linux 3.3 To Linux 3.13 Kernel Benchmarks

The latest kernel benchmarking that happened at Phoronix was testing every major Linux kernel release from Linux 3.3 through the latest stable Linux 3.13 release from an Intel Sandy Bridge system to see how the kernel performance has evolved during the hardware's lifetime for key subsystems.

4 February 2014 - 3 Comments
LLVM Clang 3.4 Is Running Very Well On AMD's High-End APU

After earlier this week running GCC 4.8.2 vs. GCC 4.9 development snapshot benchmarks on the AMD A10-7850K Kaveri APU, up for testing today are new compiler tests from this new high-end APU comparing GCC 4.9 in its current development form to LLVM Clang 3.4. This GCC 4.9 vs. LLVM Clang 3.4 compiler performance comparison is more competitive than some of the past compiler comparisons and does hold a few surprises.

1 February 2014 - 12 Comments
GCC 4.9 Shows Little Change For AMD's Kaveri

Our latest Linux benchmarks of AMD's new "Kaveri" APU with Steamroller processor cores is comparing the GCC 4.8.2 compiler performance to the very latest GCC 4.9 compiler snapshot to see how the performance is fairing for this next Free Software Foundation compiler release due out within the next few months.

30 January 2014 - 5 Comments
Intel Haswell Might Have Regressed Hard On Linux

For your viewing pleasure this weekend are some extra benchmarks of various Intel Sandy Bridge, Ivy Bridge, and Haswell HD Graphics when using an Ubuntu 14.04 Linux development snapshot with the Linux 3.13 kernel and Mesa 10.0.1. The processors tested included the Core i3 2120, Core i5 2500K, Core i5 3470, Core i7 3770K, Core i3 4130, and Core i7 4770K. These tests appear to represent a huge drawback in performance for Intel Haswell on Linux compared to earlier results.

12 January 2014 - 14 Comments
The Most Popular Linux Stories Of 2013

With 2013 ending, here's the most popular Linux, open-source, and hardware stories covered in 2013 on Phoronix. Enjoy and look forward to many more great and exclusive Linux articles on Phoronix in 2014.

31 December 2013 - Add A Comment
Clang 3.4 Performance Very Strong Against GCC 4.9

After earlier this month delivering LLVM Clang 3.3/3.4 benchmarks for the new compiler infrastructure out of Apple, today are results that directly compare the new LLVM Clang 3.4 performance against the stable GCC 4.8.2 compiler and GCC 4.9.0 development compiler under various C/C++ benchmarks.

30 December 2013 - 12 Comments
Linux 3.13 Kernel HDD File-System Benchmarks

The Christmas benchmarks we have to share on Phoronix today are of testing the XFS, Btrfs, and EXT4 file-systems on the Linux 3.13 development kernel compared to Linux 3.12 from a high-performance hard drive. Earlier this month results were shared on Phoronix that indicated file-systems on a solid-state drive slowing down with this new Linux kernel, but is that also the case for HDDs?

25 December 2013 - 4 Comments
GCC 4.9 Compiler Benchmarks On A Dual-Core Haswell

While extensive benchmarks of the GCC 4.9 development compiler are currently ongoing, here's a preview of the performance that the GNU Compiler Collection is set to offer in 2014 with its next major update. For this article an Intel Pentium "Haswell" dual-core processor was tested on a GCC 4.9 development snapshot and compared to GCC 4.8.2 and GCC 4.7.3 in a wide variety of C/C++ workloads. New LLVM Clang 3.4 benchmarks are also happening.

24 December 2013 - 1 Comment

492 software articles published on Phoronix.