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

Is PowerTop Still Useful For Extending Your Battery Life?

Michael Larabel

Published on 26 June 2010
Written by Michael Larabel
Page 1 of 2 - 18 Comments

Three years ago Intel had released PowerTop, an open-source utility for Linux that would analyze how well your laptop was conserving power and would allow users to easily tune their system for maximum battery life via simple power optimizations. By simply running this utility, some users were able to significantly extend their battery life. However, is this utility still useful and needed with a modern Linux desktop? The most recent release of PowerTop (v1.11) was a year and a half ago, so we are seeing how well PowerTop is still able to reduce the power consumption of Intel notebooks/netbooks running Linux.

This testing is simple. We performed clean installations of an Ubuntu 10.10 daily snapshot on a Lenovo ThinkPad T60 notebook and a Samsung NC10 netbook. The Ubuntu 10.10 installation on each carried the Linux 2.6.35 kernel, GNOME 2.30.2 desktop, X.Org Server 1.8.2 RC2, xf86-video-radeon 6.13.0, xf86-video-intel 2.11.0, and an EXT4 file-system. The Lenovo ThinkPad T60 has an Intel Core Duo T2400 (1.83GHz, dual-core) CPU, 1GB of system memory, an 80GB Hitachi HTS541080G9SA00 SATA HDD, and an ATI Radeon Mobility X1400 GPU. The Samsung NC10 has the Intel Atom N270, 2GB of system memory, a 32GB OCZ Core SSD, and Intel 945G integrated graphics.

We first monitored the battery consumption rate for both the notebook and netbook after performing the clean install and then again immediately after following all of PowerTop's power tweaks. For both Intel computers the only recommendations on this clean Ubuntu 10.10 installation were enabling WiFi power savings, disabling the unused Bluetooth interface, enabling USB auto-suspend for non-input devices, and enabling HD audio power-save mode for the netbook. On both devices with and without the PowerTop recommendations, we monitored the power consumption rate when the systems were idling for five minutes and then again, under different workloads that included running OpenArena followed by immediately running the OpenMP-powered GraphicsMagick benchmark and then the PostMark disk benchmark. This testing was automated and battery results monitored via the Phoronix Test Suite.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. Intel Launches The Core i7 5960X, Mighty Powerful Haswell-E CPUs
  2. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
  3. AMD Radeon R9 290 Open-Source Driver Works, But Has A Ways To Go
  4. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
Latest Linux Articles
  1. How Intel Graphics On Linux Compare To Open-Source AMD/NVIDIA Drivers
  2. The Fastest NVIDIA GPUs For Open-Source Nouveau With Steam Linux Gaming
  3. Testing For The Latest Linux Kernel Power Regression
  4. The Most Energy Efficient Radeon GPU For AMD Linux Gaming
Latest Linux News
  1. AMD Steppe Eagle Flys To Coreboot
  2. Intel Beignet Is Working Out Surprisingly Well For OpenCL On Linux
  3. Coreboot Adds Lenovo X220 With Native Sandy Bridge Support
  4. Canonical Has Yet To Land X.Org Server 1.16 For Ubuntu 14.10
  5. Imagination Launches A MIPS Development Board
  6. Getting Involved With The New Raspberry Pi Graphics Driver
  7. A New AMD Catalyst Linux Driver Unofficially Surfaces
  8. LibreOffice Ported To 64-bit ARM (AArch64)
  9. Enlightenment E19 RC3 Shows Off The New Wayland Compositor
  10. Metro Redux Is Going To Require OpenGL 4.x On Linux
Latest Forum Discussions
  1. Btrfs Gets Talked Up, Googler Encourages You To Try Btrfs
  2. Updated graphics drivers for Ubuntu 12.04 Precise LTS
  3. Catalyst 14.201.1008
  4. It's Now Possible To Play Netflix Natively On Linux Without Wine Plug-Ins
  5. Users defect to Linux as OpenBSD removes Lynx from base system
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers
  8. Radeon HD5670 and Ubuntu 14.04