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 Articles & Reviews
  1. Intel Broadwell: GCC 4.9 vs. LLVM Clang 3.5 Compiler Benchmarks
  2. Ubuntu vs. Fedora Linux On Lenovo's X1 Carbon With Core i7 Broadwell
  3. Ubuntu 15.04 Is The Easy Path To Better Performance On Intel Broadwell
  4. NVIDIA's Latest Maxwell Line-Up Against AMD With Catalyst On Linux
  5. Preliminary Tests Of Intel Sandy Bridge & Ivy Bridge vs. Broadwell
  6. AMD FX-8320E Performance On Linux
Latest Linux News
  1. Does VirtualBox VM Have Much A Future Left?
  2. HAMMER2 File-System Is Still Slowly Coming Together
  3. The Better Looking Window Decorations For GNOME 3.16
  4. Libinput 0.9 Adds Support For Hovering Fingers On Touchpads
  5. Free Software Foundation Endorses Another (Outdated) Laptop
  6. DNF Plugins Extend The Functionality Of Fedora's Yum Successor
  7. LibreOffice 4.4 Released With Better OOXML Support, UI Improvements
  8. Inkscape 0.91 Goes Through C++ Code Conversion, New Cairo Rendering, OpenMP Filters
  9. New Mesa Patch To Improve CPU-Bound Applications
  10. LLVM Adds Options To Do Fuzz Testing
Most Viewed News This Week
  1. PlayStation 4 System Compiler Support Landing In LLVM
  2. LibreOffice 4.4 Is Coming Soon With New Features
  3. Linux "GHOST" Vulnerability Hits Glibc Systems
  4. My Initial Intel Broadwell Linux Experience With The ThinkPad X1 Carbon
  5. Broadwell Linux Ultrabook Running MUCH Cooler Than Haswell
  6. LZHAM 1.0 Lossless Data Compression Codec Released
  7. Linux Users Upset By Chromium's Busted HiDPI Support
  8. Faster VP9 Decoding Is On The Horizon