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 980: The Best GPU For Linux Gamers
  2. ROCCAT LUA: A Linux-Friendly Gaming Mouse
  3. Cheetah Mounts: The Affordable Way To Put Your TV On The Wall
  4. Scythe Mugen MAX
Latest Linux Articles
  1. Preview: Radeon Gallium3D Performance For CS:GO On Linux
  2. XWayland Linux Gaming Performance With GNOME Wayland On Fedora 21
  3. EXT4/Btrfs/XFS/F2FS Benchmarks On Linux 3.17
  4. Fedora 21 Alpha First Impressions: It's Great
Latest Linux News
  1. Mir 0.8 Works On Less ABI Breakage, Touchspots, Responsiveness
  2. CS:GO For Linux Gains Better Stability, Community Server Support
  3. NVIDIA Issues Updated 340.46 Long-Lived Driver Release
  4. KDE Plasma 5.1 Now In Beta
  5. Systemd & Debian Were Most Popular In September
  6. Microsoft Announces... Windows 10 With A Start Menu
  7. Borderlands 2 Launches On Steam For Linux
  8. Debian Jessie Might Get Rid Of The kFreeBSD Port
  9. Fedora Might Try A New Scheduling Strategy For Its Releases
  10. AMD's Catalyst Working On A GLSL Shader Cache
Latest Forum Discussions
  1. NVIDIA Alerts Nouveau: They're Starting To Sign/Validate GPU Firmware Images
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Nero CD/DVD Burning Software On Linux Is Dead
  4. New Group Calls For Boycotting Systemd
  5. FSF Issues Statement On Shellshock Bash Vulnerability
  6. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  7. X.Org Is Looking For Some Female Help
  8. Advertisements On Phoronix