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 3.15 Squeezes In More ACPI / PM Improvements

Hardware

Published on 02 April 2014 03:25 AM EDT
Written by Michael Larabel in Hardware
Comment On This Article

Besides suspend and resuming much quicker, the Linux 3.15 kernel also has many other ACPI and power management improvements.

A week and a half ago the ACPI/PM 3.15 pull request was sent in by Rafael Wysocki when it looked like Linux 3.14 would be released and this Intel developer had to go off to the Linux Foundation Collaboration Summit. Rather than releasing Linux 3.14, Linus Torvalds ended up releasing 3.14-rc8 that week, and thus the ACPI/PM updates became stale. With Linux 3.14 finally now out there, Wysocki has re-sent in his ACPI/PM subsystem updates for the Linux 3.15 merge window. Besides including the original work, there's also a few more fixes that matured over the extra week within linux-next and are now ready for mainline integration.

Besides the faster suspend/resume support due to the kernel code using more asynchronous callbacks, there's a lot of other ACPI/PM improvements. Other noteworthy changes include device PM QoS support, updates to ACPICA, Windows 2013 has been added to the list of features for ACPICA to workaround some faulty hardware, battery / AC fixes, new device IDs, Intel RAPL clean-ups, Intel P-State fixes, CPUfreq / CPUidle fixes, and other fan / thermal optimizations.

More details on the Linux 3.15 ACPI/PM updates can be found via the new pull request.

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. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  2. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  3. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
  4. AMD Radeon R9 285 Tonga Performance On Linux
Latest Linux Articles
  1. Ubuntu 14.10 XMir System Compositor Benchmarks
  2. Btrfs RAID HDD Testing On Ubuntu Linux 14.10
  3. Ubuntu 14.10 Linux 32-bit vs. 64-bit Performance
  4. AMD Moves Forward With Unified Linux Driver Strategy, New Kernel Driver
Latest Linux News
  1. Intel GVT-g GPU Virtualization Moves Closer
  2. GTK+ 3.16 To Bring Several New Features
  3. Debian 8.0 Jessie Has Many Multimedia Improvements
  4. What Linux Benchmarks Would You Like To See Next?
  5. Open-Source, Linux Support For Corsair Link Devices Slowly Materializing
  6. Cairo-Dock 3.4 Shows A Lot Of Progress, Works Toward EGL/Wayland Support
  7. Mesa 10.4 Tentatively Planned For Early December
  8. SteamOS Update 145 Brings Compositor, Update Fixes
  9. GStreamer 2014 Conference Videos Posted: Wayland, HTML5, 3D
  10. Nouveau Now Supports DRI3 Without GLAMOR
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Linux hacker compares Solaris kernel code:
  3. HOPE: The Ease Of Python With The Speed Of C++
  4. Users/Developers Threatening Fork Of Debian GNU/Linux
  5. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  6. AMD Releases UVD Video Decode Support For R600 GPUs
  7. Proof that strlcpy is un-needed
  8. xbox one tv tuner