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

Testing The Power Management Of Ubuntu 10.04

Michael Larabel

Published on 18 March 2010
Written by Michael Larabel
Page 2 of 3 - 6 Comments

When the system was simply idling, Ubuntu 10.04 consumed two (almost three) Watts less than Ubuntu 9.10. Not bad! Its peak power consumption was also better than the Karmic Koala as well as where it bottomed out. However, the new power management packages did not really help this test. The average power consumption was slightly higher to start out with than the older packages, which may just be the time that it took for the new power management policies to kick in, but /var/log/pm-powersave.log confirmed the scripts were successful.

Next, the 6-cell battery was monitored when using the Phoronix Test Suite's battery-power-usage test profile. This test lets the system idle again followed by turning the 1680 x 1050 LVDS panel off via DPMS and then restoring the display and firing up MPlayer to playback a brief sample file. Again, the ThinkPad T61 consumed less energy with Ubuntu 10.04 than in Ubuntu 9.10. However, like our simple idle test, the upgraded pm-utils and pm-utils-powersave-policy packages did not appear to have much of an impact in extending the battery life.

To see how the battery power consumption looked when the Intel notebook was under load, our third and final test for the notebook was monitoring the battery performance as we ran the PostMark disk benchmark. Interestingly, when the system was under load, Ubuntu 10.04 by default went through more power than Ubuntu 9.10 -- by more than one Watt. However, when testing out the new power management policy packages, the battery power was back to being on par with the 9.10 release.

Latest Linux Hardware Reviews
  1. Gigabyte AM1M-S2H
  2. AMD's New Athlon/Semprons Give Old Phenom CPUs A Big Run For The Money
  3. 13-Way Low-End GPU Comparison With AMD's AM1 Athlon
  4. ASUS AM1I-A: A Mini-ITX Board For Socketed Kabini APUs
Latest Linux Articles
  1. How Much Video RAM Is Needed For Catalyst R3 Graphics?
  2. Ubuntu 12.04 LTS vs. 14.04 LTS Cloud Benchmarks
  3. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  4. AMD OpenCL Performance With AM1 Kabini APUs
Latest Linux News
  1. Oracle Linux 6.5 vs. Oracle Linux 7.0 Beta Benchmarks
  2. Easter Yields The Linux 3.15-rc2 Kernel Release
  3. The Most Amazing OpenGL Tech Demo In 64kb
  4. Packard Bell LM85 Now Supported By Coreboot
  5. AmazonBasics External USB 2.0 DVD Writer For Linux
  6. TP-LINK TG-3468: A $12 Linux PCI-E Gigabit Network Adapter
  7. Linux 3.15 Lands Some DRM Graphics Driver Fixes
  8. AMD Is Disabling DPM Support For RV770 GPUs
  9. ReactOS Working On A Community Windows OS
  10. eRacks Keeps Pushing Linux, Open-Source Systems After 15 Years
  11. Borderlands Is Being Considered For Linux
  12. Mesa 10.0 & 10.1 Stable Get Updated
Latest Forum Discussions
  1. ReactOS Working On A Community Windows OS
  2. The GNOME Foundation Is Running Short On Money
  3. Updated and Optimized Ubuntu Free Graphics Drivers
  4. Catalyst 14.3 Beta
  5. Suggestions about how to make a Radeon HD 7790 work decently?
  6. Radeon 8000M problematic on Linux?
  7. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  8. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura