1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Linux 3.12 Changes, Kernel Feature Overview

Linux Kernel

Published on 03 November 2013 04:34 PM EST
Written by Michael Larabel in Linux Kernel
1 Comment

With the Linux 3.12 kernel likely being officially released this evening if there are no last-minute delays, here is a look again at some of the top features and changes for this major open-source Linux upgrade.

- First and foremost, there can be some big performance improvements which I had tracked down to being a change in the default CPUfreq governor. Open-source AMD Radeon graphics in particular should be a big benefactor. More details on Linux 3.12 performance changes can be found in my article earlier today covering Linux 3.12 kernel benchmarks.

- The Radeon open-source kernel graphics driver has improved Dynamic Power Management, but it won't be until Linux 3.13 where Radeon DPM is enabled by default along with HDMI audio.

- A brand new DRM/KMS driver in the form of the Snapdragon MSM driver written by Rob Clark to go along with his reverse-engineered Freedreno driver for Qualcomm Snapdragon/Adreno graphics.

- Run-time GPU power management so NVIDIA Optimus systems can dynamically power on/off the secondary GPU.

- Experimental DRM render nodes support done by David Herrmann over the summer.

- AMD Berlin APU support as the first APU built upon AMD's Heterogeneous System Architecture (HSA).

- The EXT4 file-system now supports aggressive extent caching and better recovery capabilities.

- Random F2FS, XFS, and Btrfs file-system improvements. This kernel does deliver on disk improvements.

- zRAM has been promoted out of the staging area of the kernel. ZRAM supports a compressed block device in RAM to avoid paging to disk and is mostly of benefit for systems with limited amounts of system memory.

- Various staging driver updates and sound driver work and other glorious work.

Stay tuned for more Linux 3.12 coverage and continued benchmarks while soon our focus will be all about Linux 3.13 with its Intel Broadwell support.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  2. Sumo's Omni Gets Reloaded
  3. AMD A10-7800 & A6-7400K APUs Run Great On Linux
  4. Radeon Gallium3D Is Running Increasingly Well Against AMD's Catalyst Driver
Latest Linux Articles
  1. Intel Sandy Bridge Gets A Surprise Boost From Linux 3.17
  2. Open-Source Radeon Graphics Have Some Improvements On Linux 3.17
  3. CPUFreq Scaling Tests With AMD's Kaveri On Linux 3.16
  4. Enabling HyperZ Is Still An Easy Way For Faster RadeonSI Performance
Latest Linux News
  1. Userptr Support Set For AMD Radeon GPUs In Linux 3.18
  2. NVIDIA Releases CUDA 6.5 As A Huge Update
  3. GNOME 3.14 Beta Makes GLSL Optional, Supports Wayland Gesture/Touch Events
  4. KDE Software Compilation 4.14 Released
  5. The Many Things You Can Build With A Raspberry Pi
  6. AMD's Catalyst Linux Driver Preparing For A World Without An X Server?
  7. Khronos Publishes Its Slides About OpenGL-Next
  8. Proposed: A Tainted Performance State For The Linux Kernel
  9. Systemd 216 Piles On More Features, Aims For New User-Space VT
  10. LXQt 0.8 Is Being Released Soon
Latest Forum Discussions
  1. Systemd 216 Piles On More Features, Aims For New User-Space VT
  2. The dangers of Linux kernel development
  3. Remote gui not accessible in Phoronix Test Suite 5.2
  4. Dead Island for Linux (?)
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. AMD Offers Mantle For OpenGL-Next, Pushes Mantle To Workstations
  7. Next-Gen OpenGL To Be Announced Next Month
  8. OpenGL 4.5 Released With New Features