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

IBM: Memory Power Management Savings Measurable

Hardware

Published on 12 November 2013 05:13 PM EST
Written by Michael Larabel in Hardware
6 Comments

An IBM Linux Technology Center has shared that enabling experimental memory power management within the Linux kernel has dropped one of their test system's power consumption by about 2.6% but it's likely even more with experimental hardware.

Srivatsa S. Bhat of IBM had presented at the Kernel Summit and then today shared his power experiments from his machine. First of all, his machine isn't what most people will ever experience: an IBM Power 7 system with four CPUs making up 32 cores and there's 128GB of RAM. With this system, testing out kernel power memory management had dropped his system's power consumption by up to 2.6%.

While this hardware is a bit extreme with 32 cores and 128GB of RAM, it isn't even an ideal system as there's only four memory regions for handling power savings. Srivatsa said there's prototype IBM hardware that can handle more memory regions and lower base power consumption where he believes the system power savings could be up to 5% with this feature.

For those not familiar with the active work on memory power savings by the Linux kernel, see Linux Kernel Power Management Targeting Memory. Srivatsa's findings can be found on the kernel mailing list with more details.

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. AMD Launches New FX CPUs, Cuts Prices On Existing Processors
  2. Preview: AMD's FX-9590 Eight-Core At Up To 5.0GHz On Linux
  3. Intel Launches The Core i7 5960X, Mighty Powerful Haswell-E CPUs
  4. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
Latest Linux Articles
  1. Ondemand vs. Performance CPU Governing For AMD FX CPUs On Linux 3.17
  2. How Intel Graphics On Linux Compare To Open-Source AMD/NVIDIA Drivers
  3. The Fastest NVIDIA GPUs For Open-Source Nouveau With Steam Linux Gaming
  4. Testing For The Latest Linux Kernel Power Regression
Latest Linux News
  1. GSoC 2014 Yielded Some Improvements For Mesa/X.Org This Year
  2. webOS Lives On As LuneOS With New Release
  3. Marek Lands Radeon Gallium3D HyperZ Improvements
  4. Mozilla Firefox 32 Surfaces With HTML5, Developer Changes
  5. Nouveau X.Org Driver Released With DRI3+Present, Maxwell, GLAMOR
  6. Microsoft & AMD Release C++ AMP Compiler With Linux Support
  7. AMD, Wine & Valve Dominated August For Linux Users
  8. Linux 3.17-rc3 Kernel Released Back On Schedule
  9. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  10. Mesa 10.3 RC2 Arrives Via Its New Release Manager
Latest Forum Discussions
  1. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  2. AMD graphics doesn't work with AMD Catalyst drivers
  3. Best Radeon for a Power Mac G5?
  4. The dangers of Linux kernel development
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. AMD Releases UVD Video Decode Support For R600 GPUs
  7. SSD seems slow
  8. Is laptop with Intel CPU and AMD dGPU worth buying considering especially AMD Enduro?