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

A Performance Overhaul Of KDE's KWin

KDE

Published on 30 August 2011 07:37 AM EDT
Written by Michael Larabel in KDE
36 Comments

Martin Gräßlin has successfully boosted the performance of KDE's KWin for the upcoming 4.7.2 point release and more so for the KDE SC 4.8 release. This is an attempt to make the KWin compositing window manager handle rendering at sixty frames per second, which it hasn't been able to scale to that frame-rate due to deficiencies in the project's code-paths.

Fixed for the KDE SC 4.7.2 point release in one month is a bug in KWin's effect chain that was taking much longer than expected, but greater performance will come out of KDE SC 4.8 by fully addressing an issue in the effects chain with only calling the active effects. From there, Martin made other optimizations in the effect chain. With the effect chain being more optimized, Martin is beginning to look at how to optimize KWin's paint paths so they can achieve 60+ FPS rendering on the KDE desktop.

Martin is also looking at moving the compositor into its own thread so that heavy operations in window management and decorations don't slow down the repainting of the compositor. Texture loading might also be looked at as one of the first steps into moving the process into its own thread.

"Overall very nice improvements, I'm happy with, but not yet satisfied as we do not yet reach the constant 60 frames/second." Read more on Martin's blog.

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. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. Linux 3.19-rc1 Kernel Released Ahead Of Schedule
  2. Civilization: Beyond Earth Linux GPU/Driver Benchmarks
  3. X.Org Server 1.16.3 Released To Fix Security Issues
  4. Linux 3.19 Merge Window Closes Ahead Of Schedule
  5. MIPS R6 Architecture Now Supported By GCC
  6. LowRISC To Feature Tagged Memory & Minion Cores
  7. Intel Skylake Audio Support For Linux 3.19
  8. After 10+ Years, NetworkManager Reaches v1.0
  9. VDPAU Updated To v0.9
  10. An Open Hardware Random Number Generator Proposed
Latest Forum Discussions
  1. FPS capped on Linux (AMD fglrx drivers)
  2. Need some hand holding with upgrading xserver
  3. Are there an app using HSA ?
  4. The New SuperTuxKart Looks Better, But Can Cause GPU/Driver Problems
  5. XLennart: A Game For Systemd Haters With Nothing Better To Do
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. Debian init discussion in Phoenix Wright format
  8. Bench specific mount point