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 Benchmarking Platform
Phoromatic Test Orchestration

The First Benchmarks Of Unity On XMir: There's A Performance Hit

Michael Larabel

Published on 28 June 2013
Written by Michael Larabel
Page 5 of 5 - 114 Comments

The Reaction Quake 3 game saw its frame-rate drop by over 10% when now being routed through Mir and the unity-system-compositor.

Lastly, Urban Terror and Warsow both saw noticeable performance drops when XMir/Mir was being dealt with.

While XMir is still using an X.Org Server, these results show that for modern Intel Linux graphics there is indeed a performance overhead in dealing with Mir. It will be interesting though to see how the performance is for native Mir applications that don't need to deal with X in the mix, but that's still some months away until more applications will be supported.

These results do show that for at least the time being if migrating an X11 desktop environment to running on XMir, there is a performance penalty without having any real end-user gain. There is a performance cost regardless if the OpenGL game/application is lightweight or more visually demanding upon the graphics stack. Of course, Mir is still early in development, but that's where things stand today and we will definitely be benchmarking Mir as things progress within Ubuntu 13.10 and future releases.

The Canonical Mir team was given a preview of these results hours before this article was published. Kevin Gunn of the Mir team said, "at glance nothing looks completely out of place....except maybe the one nexuiz run, seems odd to be almost double. I suppose we might need to dig into those with >10% delta & determine the limiting factor."

Under the current circumstances, this is a performance regression. It's sad too considering that where Mir is supported right now on the desktop (the open-source Mesa/Gallium3D drivers) the performance is already challenged when compared to the proprietary drivers and now is only being made worse by the Mir overhead. For these open-source Linux graphics drivers, every frame does matter right now for Linux gamers. Meanwhile, the NVIDIA and AMD Catalyst drivers that are already performing great will gracefully fallback to using a pure X.Org Server configuration until they support EGL+Mir. It will also be interesting to see how Wayland and XWayland perform, since Keith Packard among others have made comments in the past that it should be faster than using an outright X.Org Server.

Coming up in July will be Radeon and Nouveau benchmarks of the latest Mir development code atop the latest Ubuntu 13.10 packages at the time. Also to be published in the next day or two are 2D performance benchmarks of Mir/X.Org. Additional test requests can be routed to the Phoronix Forums or @MichaelLarabel on Twitter.

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. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
  2. The Lenovo T450s Is Working Beautifully With Linux
  3. Linux 4.0 SSD EXT4 / Btrfs / XFS / F2FS Benchmarks
  4. Linux 4.0 Hard Drive Comparison With Six File-Systems
  5. Lenovo ThinkPad T450s Broadwell Preview
  6. How Open-Source Allowed Valve To Implement VULKAN Much Faster On The Source 2 Engine
Latest Linux News
  1. Debian 8.0 Jessie's Installer RC3 Released
  2. Features Thus Far For The Linux 4.1 Kernel
  3. Intel's Turbostat Adds Skylake Support In Linux 4.1
  4. Microsoft's Open-Source Group Merges Back Into The Company
  5. EXT4 In Linux 4.1 Adds File-System Level Encryption
  6. Open-Source Ardour 4.0 Audio Software Has Big Improvements
  7. Linux-Powered Endless Computer Raises $100k+ In A Few Days
  8. GCC 5.1 RC2 Arrives, GCC 5.1 Planned For Next Week
  9. F2FS For Linux 4.1 Has New Features & Fixes
  10. Phoronix Server Upgrade This Weekend: Dual Haswell Xeons, 96GB DDR4
Most Viewed News This Week
  1. Nouveau: NVIDIA's New Hardware Is "VERY Open-Source Unfriendly"
  2. Linux 4.0 Kernel Released
  3. Linux 4.1 Brings Many Potentially Risky x86/ASM Changes
  4. Microsoft Announces An LLVM-Based Compiler For .NET
  5. VirtualBox 5.0 Beta 2 Released
  6. KDBUS Is Taking A Lot Of Heat, Might Be Delayed From Mainline Linux Kernel
  7. LibreOffice 4.5 Bumped To Become LibreOffice 5.0
  8. Mozilla Start Drafting Plans To Deprecate Insecure HTTP