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

Ubuntu's Unity/Compiz Gets Even Slower

Michael Larabel

Published on 4 September 2012
Written by Michael Larabel
Page 5 of 5 - 60 Comments

Ending some results at a lower resolution where the graphics hardware and driver are less busy still results in OpenGL regressions from the Intel Core i5 system with the newest Quantal packages.

It's unfortunate -- especially with the dismissal of the Compiz-less Unity 2D desktop from Ubuntu 12.10 -- but the Unity/Compiz performance continues to be a very visible blemish for the Ubuntu desktop. It's just not in OpenGL benchmarks where the performance degradation is visible and of no relevance to the real world, but it's very easy to find mentions within forums, Twitter, and elsewhere where some games (especially on the open-source drivers) aren't exactly playable with Unity but when switching to Xfce or other alternative desktops it becomes "brilliant", as said by one Phoronix reader. The Ubuntu 12.10 Beta is imminent and even with the latest Unity/Compiz updates the performance is still troubling, as the cross-desktop results in an upcoming Phoronix clearly illustrate.

The removal of Unity 2D is also equally problematic -- or even bigger -- for those Ubuntu ARM users. When there's no 3D hardware acceleration support available for Unity/Compiz, it's falling back to using the Gallium3D LLVMpipe driver. This isn't too much of a problem for Ubuntu x86 users, since there most hardware is backed by working open and closed-source graphics drivers but even without the hardware support, LLVMpipe is enough for powering a simple desktop assuming you're on a modern multi-core CPU and you'll find the best results if using x86_64 binaries and the CPU supports modern instruction sets like SSE4. The real problem is with ARM where there isn't any "out of the box" 3D support for ARM hardware for the SoC vendors not (yet) backing fully open-source driver stacks. Therefore, the clean Ubuntu ARM install experience will be left using Unity over LLVMpipe where on ARM it's far from being optimized. ARM hardware in the first place isn't as fast as a modern x86 desktop CPU but the LLVMpipe driver doesn't yet have ARM NEON support or other optimizations for providing decent software-accelerated 3D support, so the experience is basically a mess and a huge regression in the user experience compared to offering the Unity 2D option. Loading the processor up with OpenGL work also isn't too good for power usage.

Stay tuned to Phoronix for more Ubuntu desktop benchmarks as the 12.10 Quantal release approaches. If you appreciate this continued work that is done single-handedly, please subscribe to the single-page-articles without-ads option or follow the requests made at the end of this post.

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. Btrfs On 4 x Intel SSDs In RAID 0/1/5/6/10
  2. AMD Radeon R9 290 On Ubuntu 14.10: RadeonSI Gallium3D vs. Catalyst
  3. MSI X99S SLI PLUS On Linux
  4. NVIDIA GeForce GTX 970 Offers Great Linux Performance
Latest Linux Articles
  1. Windows 8.1 vs. Ubuntu 14.10 With Intel HD Graphics
  2. 6-Way Ubuntu 14.10 Radeon Gallium3D vs. Catalyst Driver Comparison
  3. NVIDIA vs. Nouveau Drivers On Ubuntu 14.10
  4. Ubuntu 14.10 Offers AMD Radeon Driver Performance Improvements
Latest Linux News
  1. SIMD For JavaScript Continues Coming Along
  2. GNOME 3.15.1 Released
  3. Red Hat Software Collections 1.2 Adds GCC 4.9, Nginx 1.6
  4. GLAMOR Acceleration Continues To Be Cleaned Up
  5. Russia's Yandex Web Browser Finally Released For Linux
  6. Linux Kernel Finally Being Optimized For SSHDs
  7. GPU Profiling Support Lands In Mozilla Firefox
  8. Kubuntu 15.04 Will Use KDE's Plasma 5 By Default
  9. KDBUS Submitted For Review To The Mainline Linux Kernel
  10. An Intel-Based Ubuntu Touch Tablet Is Planning To Launch Soon
Latest Forum Discussions
  1. Is foolish currently develop in machine code, hexadecimal and assembly?
  2. How to get rid of Linux
  3. Reducing The CPU Usage In Mesa To Improve Performance
  4. Help diagnosing problems with a Readon HD 4670 on Mesa 10.3.2-1
  5. Advertisements On Phoronix
  6. nv and xorg.conf under Debian PPC
  7. Looking for a Open-Source AMD experienced Linux mentor
  8. Bad perfomance in gaming