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 Benchmarking Platform
Phoromatic Test Orchestration

Ubuntu 12.04 Is A Mixed Power Story

Michael Larabel

Published on 4 April 2012
Written by Michael Larabel
Page 1 of 15 - 3 Comments

Similar to the mixed boot performance results for Ubuntu 12.04, the power consumption results are also mixed. For some hardware, Ubuntu 12.04 is the most power efficient Ubuntu Linux release in recent history while for some other hardware the Precise Pangolin is continuing in a power binge.

Following my warning last week of On Old Hardware, Think Twice About Ubuntu 12.04 and then If You're Lucky, Ubuntu 12.04 LTS Can Boot Faster, up now is my latest look at the Ubuntu 12.04 power consumption numbers from a Precise Pangolin snapshot taken after the beta two freeze. There is also some performance benchmarks in this article to correlate against the power consumption differences.

The power consumption is one of the areas that Canonical engineers were paying special attention to for the 12.04 LTS cycle after the very notorious and widely reported Linux power consumption problems of 2011. Read How Ubuntu 12.04 Is Trying To Drop Power Usage for some additional context and my many power regression articles.

This power consumption testing is being done from the line-up of notebooks used in the boot articles. Unfortunately the USB-based power meter normally used for the desktop/workstation power measurements is currently having issues on Linux 3.2+ kernels, so for this article it's just a mobile-focused power consumption look while running on battery power. All testing and monitoring was done using the Phoronix Test Suite with OpenBenchmarking.org serving as the collaborative back-end.

First up are the results from the HP EliteBook with an Intel Core i5 Sandy Bridge CPU.

Latest Linux News
  1. Radeon & AMDGPU DRM Fixes Queue Up For Linux 4.2
  2. KDE Applications 15.04.3 Fixes Bugs
  3. Benchmarks Of 54 Different Intel/AMD Linux Systems
  4. Linux 4.2 Bringing Support For ARCv2, HS38 CPU Cores
  5. Libdrm 2.4.62 Is An Important Update For Open-Source GPU Drivers
  6. The State of Unity 3D Game Engine, Editor On Linux
  7. ZFS On Linux 0.6.4.2 Brings Linux 4.1 Support, Fixes
  8. Old Net Burst Tests, Ubuntu Phone & Assembly x86 Were Popular Topics Last Month
  9. Qt 5.5 Officially Released
  10. Global Shortcuts In KDE Plasma Under Wayland
Latest Articles & Reviews
  1. How KDE VDG Is Trying To Make Open-Source Software Beautiful
  2. Attempting To Try Out BCache On The Linux 4.1 Kernel
  3. CompuLab's Fitlet Is A Very Tiny, Fanless, Linux PC With AMD A10 Micro
  4. AMD A10-7870K Godavari: RadeonSI Gallium3D vs. Catalyst Linux Drivers
Most Viewed News This Week
  1. Kubuntu 15.10 Could Be The End Of The Road
  2. KDBUS Won't Be Pushed Until The Linux 4.3 Kernel
  3. The State & Complications Of Porting The Unity Editor To Linux
  4. The Staging Pull For Linux 4.2: "Big, Really Big"
  5. Latest Rumor Pegs Microsoft Wanting To Buy AMD
  6. SteamOS "Brewmaster" Is Valve's New Debian 8.1 Based Version
  7. Exciting Features Merged So Far For The Linux 4.2 Kernel
  8. ARM Posts Pictures Of AMD's New Development Board