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

The Cost of SELinux, Audit, & Kernel Debugging

Michael Larabel

Published on 13 August 2009
Written by Michael Larabel
Page 6 of 6 - 29 Comments

dcraw slowed down when it came to using kernel-debug.

It is the same story with SQLite.

Ending off our testing, the kernel-debug package led to a massive performance drop when testing the PostgreSQL performance using pgbench. Disabling SELinux / Audit led to about a 5% gain.

Well, the area where SELinux / Audit and the debugging-enabled kernel really impacted the performance was with the disk and database tests (along with Apache). In the other Linux desktop benchmarks, there was a smaller margin, with some being more noticeable than the others. Disabling SELinux and Audit will certainly improve the performance of Fedora, while running a kernel with all of the debugging code enabled will cost you quite a bit in the way of performance. For developers, having this kernel debugging support is important, while for security-oriented users, having Security Enhanced Linux and system-call auditing support is important and worth the low cost, even with Intel Atom hardware.

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. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  2. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  3. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
  4. AMD Radeon R9 285 Tonga Performance On Linux
Latest Linux Articles
  1. Ubuntu 14.10 XMir System Compositor Benchmarks
  2. Btrfs RAID HDD Testing On Ubuntu Linux 14.10
  3. Ubuntu 14.10 Linux 32-bit vs. 64-bit Performance
  4. AMD Moves Forward With Unified Linux Driver Strategy, New Kernel Driver
Latest Linux News
  1. Cairo-Dock 3.4 Shows A Lot Of Progress, Works Toward EGL/Wayland Support
  2. Mesa 10.4 Tentatively Planned For Early December
  3. SteamOS Update 145 Brings Compositor, Update Fixes
  4. GStreamer 2014 Conference Videos Posted: Wayland, HTML5, 3D
  5. Nouveau Now Supports DRI3 Without GLAMOR
  6. Features Of The Linux 3.18 Kernel
  7. Debian Now Defaults To Xfce On Non-x86 Desktops
  8. Phoenix Is Trying To Be An Open Version Of Apple's Swift
  9. Linux 3.19 To Have Skylake Graphics, PPGTT Enablement
  10. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
Latest Forum Discussions
  1. HOPE: The Ease Of Python With The Speed Of C++
  2. Users/Developers Threatening Fork Of Debian GNU/Linux
  3. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  4. AMD Releases UVD Video Decode Support For R600 GPUs
  5. Proof that strlcpy is un-needed
  6. xbox one tv tuner
  7. Bye bye BSD, Hello Linux: A Sys Admin's Story
  8. Updated and Optimized Ubuntu Free Graphics Drivers