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 Articles & Reviews
  1. Khronos Group Announces Vulkan, OpenCL 2.1, SPIR-V
  2. Samsung 850 EVO SSD Linux Benchmarks
  3. Kubuntu 15.04 Is Turning Out Quite Nice, Good Way To Try Out The Latest KDE
  4. 5-Way Linux Distribution Comparison On The Core i3 NUC
  5. OCZ ARC 100 Linux SSD Benchmarks
  6. Lenovo ThinkPad X1 Carbon Works Great As A Linux Ultrabook
Latest Linux News
  1. The Khronos Group's Vulkan, SPIR-V & OpenCL 2.1 Presentations
  2. Valve Developed An Intel Linux Vulkan GPU Driver
  3. Valve Starts Listing The Steam Machines In The Steam Store
  4. Ubuntu Will Start Booting With Systemd Next Monday
  5. A Brand New Linux Network Stack Proposed: Linux XIA
  6. Niche Drivers Get Ported To Atomic Mode-Setting For Linux 4.1
  7. openSUSE Tumbleweed Continues Ascending
  8. Open-Source SPIR-V Reader & Writer Written In Java
  9. LunarGLASS Adds Experimental SPIR-V Front-End
  10. The New Open-Source Linux Test Farm Is Almost Operational
Most Viewed News This Week
  1. Confirmed: Vulkan Is The Next-Gen Graphics API
  2. Xfce 4.12 Released After Nearly Three Years Of Work
  3. 8cc: A Small C11 Compiler
  4. Unreal Engine Made Free By Epic Games
  5. Canonical's Latest Demo Of Ubuntu Unity 8 Convergence In Action
  6. Mozilla Thunderbird Adoption Climbs, Thunderbird 38 In May
  7. VLC 2.2 "Weathermax" Brings Better VP9 & H.265 Support
  8. Features Coming For The Imminent Xfce 4.12 Release
%%CLICK_URL_UNESC%%