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

Another Major Linux Power Regression Spotted

Michael Larabel

Published on 25 April 2011
Written by Michael Larabel
Page 3 of 4 - 38 Comments

The third test is running the OpenArena game from the Mobility Radeon X300 kernel with the old Mesa and DDX user-space (meaning no DRI2/KMS/page-flipping, etc, plus KMS was disabled in each kernel via nomodeset) and still only upgrading the kernel. When running this OpenGL game on the different kernels, the power consumption again goes up with Linux 2.6.35 from 26.2 to 28.5 Watts (+9%) and with the Linux 2.6.38 kernel it goes up to 29.9 Watts (+5%).

When applying system memory pressure via the Stream memory benchmark, the regression persisted. The delta actually increased with the Linux 2.6.35 kernel to being a 17.9% setback and another 5% with the Linux 2.6.38 kernel.

Latest Linux Hardware Reviews
  1. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  2. Intel Pentium G3258 On Linux
  3. SilverStone Precision PS10
  4. ASRock Z97 Extreme6
Latest Linux Articles
  1. Nouveau vs. Radeon vs. Intel Tests On Linux 3.16, Mesa 10.3-devel
  2. KVM Benchmarks On Ubuntu 14.10
  3. X.Org Server 1.16 Officially Released With Terrific Features
  4. Ubuntu With Linux 3.16 Smashes OS X 10.9.4 On The MacBook Air
Latest Linux News
  1. GNOME 3.13.4 Continues Working On Wayland & More
  2. Wine 1.7.23 Has Initial Support For 64-bit Android Builds
  3. FreeBSD Developing A New Automounter, Other Features
  4. Guix 0.7 Can Now Install The GNU Operating System
  5. X.Org Foundation Still Works Towards Becoming An SPI Project
  6. Open-Source AMD Hawaii Support Should Now Be Working!
  7. KDE Developers Continue Working Toward Wayland Support
  8. Ubuntu 14.04.1 LTS Released
  9. Linux Developers Jump Quickly On ACPI 5.1, Helps Out ARM
  10. Pkg 1.3.0 Released To Improve Package Management On FreeBSD
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. AMD "Hawaii" Open-Source GPU Acceleration Still Not Working Right
  3. Radeon related kernel bug??
  4. how the US intellegentia operates:
  5. AMD Publishes Open-Source Linux HSA Kernel Driver
  6. Next-Gen OpenGL To Be Announced Next Month
  7. Open-Source Radeon Performance Boosted By Linux 3.16
  8. Remote gui not accessible in Phoronix Test Suite 5.2