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

AMD Has A New Radeon DRM Performance Patch

AMD

Published on 02 May 2014 07:04 AM EDT
Written by Michael Larabel in AMD
7 Comments

AMD has a new Radeon DRM kernel driver patch pending that is able to offer Linux gaming performance improvements by improving the video memory bandwidth performance by the open-source graphics driver.

Published on Thursday was the latest patch by AMD's Christian König that adds large PTE support for their most recent GPUs -- the Northern Islands (HD 6000 series) through Southern/Sea Islands (HD 7000 series and newer; GCN hardware).

Christian explained in the patch contents:
This patch implements support for VRAM page table entry compression. PTE construction is enhanced to identify physically contiguous page ranges and mark them in the PTE fragment field. L1 TLB and L2 cache support is enabled for 64KB (SI/CIK) and 256KB (NI) PTE fragments, significantly improving TLB utilization for VRAM allocations.

Linear store bandwidth is improved from 60GB/s to 125GB/s on Pitcairn. Unigine Heaven 3.0 sees an average improvement from 24.7 to 27.7 FPS on default settings at 1920x1200 resolution with vsync disabled.

This patch wasn't part of the latest Radeon DRM fixes for Linux 3.15; hopefully this performance enhancing patch will be applied for the Linux 3.16 kernel. Of course, when it is mainlined, you can surely bet that it will be benchmarked on Phoronix. In case you missed it, we posted some Radeon Linux 3.14 vs. 3.15 benchmarks yesterday.

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 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. A New Video Has Us Real Excited About The New UT For Linux
  2. CoreOS Experiences Its First Stable Release
  3. GNOME 3.13.4 Continues Working On Wayland & More
  4. Wine 1.7.23 Has Initial Support For 64-bit Android Builds
  5. FreeBSD Developing A New Automounter, Other Features
  6. Guix 0.7 Can Now Install The GNU Operating System
  7. X.Org Foundation Still Works Towards Becoming An SPI Project
  8. Open-Source AMD Hawaii Support Should Now Be Working!
  9. KDE Developers Continue Working Toward Wayland Support
  10. Ubuntu 14.04.1 LTS Released
Latest Forum Discussions
  1. New build, first Linux PC, what could go wrong? ;)
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. AMD "Hawaii" Open-Source GPU Acceleration Still Not Working Right
  4. Radeon related kernel bug??
  5. how the US intellegentia operates:
  6. AMD Publishes Open-Source Linux HSA Kernel Driver
  7. Next-Gen OpenGL To Be Announced Next Month
  8. Open-Source Radeon Performance Boosted By Linux 3.16