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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

Intel Ultrabook Benchmarks On The Linux 3.15 Kernel

Now that things are settling down with Linux 3.15, here's some fresh benchmarks of the Linux 3.15 kernel off an ASUS Zenbook Prime.
30 April 2014 - 2 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 - 11 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

466 software articles published on Phoronix.
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