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 Should Suspend & Resume Much Faster

Linux Kernel

Published on 23 March 2014 06:30 AM EDT
Written by Michael Larabel in Linux Kernel
25 Comments

The Linux 3.15 kernel will feature a large number of ACPI and power management updates when its merge window opens in the days ahead.

Rafael J. Wysocki published a list this week of all the changes he has queued up for the Linux 3.15 kernel when it comes to new work. Given that the merge window will soon be open, Rafael isn't planning to accept any new work to be added to this Linux 3.15 pull.

Among the many items that will be found for the ACPI/PM pull request, a few of the changes that caught our attention were numerous ACPICA updates, CPUfreq now being supported for 64-bit ARM (ARMv8/AArch64) drivers, support for setting latency tolerance values for LPSS devices handling Latency Tolerance Reporting, asynchronous threads for more PM / sleep phases, and various other fixes and improvements.

Visible to users with the Linux 3.15 kernel should be reduced time for system suspend and resuming, thanks to the enabling of more asynchronous threads. Chuansheng Liu had written, "This patch series are for enabling the asynchronous threads for the phases resume_noirq, resume_early, suspend_noirq and suspend_late. Just like commit 5af84b82701a and 97df8c12995, with async threads it will reduce the system suspending and resuming time significantly. With these patches, in my test platform, it saved 80% time in resume_noirq phase."

More details on the Linux 3.15 ACPI / PM changes can be found via this mailing list message.

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. Even With Re-Clocking, Nouveau Remains Behind NVIDIA's Proprietary Linux Driver
  2. The Power Consumption & Efficiency Of Open-Source GPU Drivers
  3. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  4. Intel Pentium G3258 On Linux
Latest Linux Articles
  1. Updated Source Engine Benchmarks On The Latest AMD/NVIDIA Linux Drivers
  2. Nouveau vs. Radeon vs. Intel Tests On Linux 3.16, Mesa 10.3-devel
  3. KVM Benchmarks On Ubuntu 14.10
  4. X.Org Server 1.16 Officially Released With Terrific Features
Latest Linux News
  1. Builder: A New Development IDE Being Built For GNOME
  2. GDB 7.8 Betters Python Scripting, Adds Guile Support
  3. GNOME's GTK+ Is Still Striving For A Scene Graph, Canvas API
  4. Unreal Tournament Looks Great For Team Deathmatch
  5. LibreOffice 4.3 Released With Many Exciting Changes
  6. GNOME/GTK On Wayland Gains Focus At GUADEC
  7. GNOME Stakeholders Take Issue With Groupon Over their Gnome
  8. GStreamer VA-API Plug-In Update Adds New Features
  9. Qt 5.4 Going Into Feature Freeze Next Week With Exciting Changes
  10. OpenSUSE Factory Turns Into Rolling Release Distribution
Latest Forum Discussions
  1. Grand Theft Auto Running On Direct3D Natively On Linux Shows Gallium3D Potential
  2. Open-source drivers on ATI R7 260X
  3. AMD Athlon 5350 APU On Linux
  4. Linus Torvalds On GCC 4.9: Pure & Utter Crap
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. Debian + radeonsi
  7. List of Linux friendly Kickstarter projects
  8. Porting Mesa to the Playstation 2