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

Marek Further Improves Radeon Mesa Performance

AMD

Published on 12 December 2012 06:13 AM EST
Written by Michael Larabel in AMD
35 Comments

With a patch sent to the Mesa development list on Monday, Marek Olšák has made another significant performance improvement to the commonly used R600 Gallium3D driver for AMD Radeon graphics cards.

Marek Olšák, the independent contributor to the AMD Radeon Gallium3D driver stack that has achieved feats from R300g HyperZ support to various performance optimizations, has achieved some additional performance gains out of this open-source Linux graphics driver.

The patch being talked about today is r600g: use u_upload_mgr for allocating staging transfer buffers. The patch, which weighs in at just a couple of lines of code, is described as "u_upload_mgr suballocates memory from a large buffer and maps the allocated range (unsychronized), which is perfect for short-lived staging buffers. This reduces the number of relocations sent to the kernel."

By using this sub-allocator to reduce the number of buffers being allocated and synchronized to the video RAM, there's a performance win for some scenarios. Aaron Watry, a Phoronix reader and frequent Phoronix Forums contributor, has already benchmarked the impact of this single Mesa R600g patch.

In 1212102-SU-SUBALLOCT33 you can find his benchmark result for a Radeon HD 6850 graphics card while running Reaction Quake 3 with and without this sub-allocator patch. For this configuration, a 27% boost in the OpenGL frame-rate was witnessed.

This recent work plus the a-sync DMA engine support that came out of AMD this week is quite exciting for seeing some open-source AMD Radeon Linux graphics performance improvements on the horizon.

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 Launches New FX CPUs, Cuts Prices On Existing Processors
  2. Preview: AMD's FX-9590 Eight-Core At Up To 5.0GHz On Linux
  3. Intel Launches The Core i7 5960X, Mighty Powerful Haswell-E CPUs
  4. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
Latest Linux Articles
  1. Ondemand vs. Performance CPU Governing For AMD FX CPUs On Linux 3.17
  2. How Intel Graphics On Linux Compare To Open-Source AMD/NVIDIA Drivers
  3. The Fastest NVIDIA GPUs For Open-Source Nouveau With Steam Linux Gaming
  4. Testing For The Latest Linux Kernel Power Regression
Latest Linux News
  1. webOS Lives On As LuneOS With New Release
  2. Marek Lands Radeon Gallium3D HyperZ Improvements
  3. Mozilla Firefox 32 Surfaces With HTML5, Developer Changes
  4. Nouveau X.Org Driver Released With DRI3+Present, Maxwell, GLAMOR
  5. Microsoft & AMD Release C++ AMP Compiler With Linux Support
  6. AMD, Wine & Valve Dominated August For Linux Users
  7. Linux 3.17-rc3 Kernel Released Back On Schedule
  8. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  9. Mesa 10.3 RC2 Arrives Via Its New Release Manager
  10. Ubuntu 14.10's Lack Of X.Org Server 1.16 Gets Blamed On AMD
Latest Forum Discussions
  1. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  2. AMD graphics doesn't work with AMD Catalyst drivers
  3. Best Radeon for a Power Mac G5?
  4. The dangers of Linux kernel development
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. AMD Releases UVD Video Decode Support For R600 GPUs
  7. SSD seems slow
  8. Is laptop with Intel CPU and AMD dGPU worth buying considering especially AMD Enduro?