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. Gigabyte AM1M-S2H
  2. AMD's New Athlon/Semprons Give Old Phenom CPUs A Big Run For The Money
  3. 13-Way Low-End GPU Comparison With AMD's AM1 Athlon
  4. ASUS AM1I-A: A Mini-ITX Board For Socketed Kabini APUs
Latest Linux Articles
  1. How Much Video RAM Is Needed For Catalyst R3 Graphics?
  2. Ubuntu 12.04 LTS vs. 14.04 LTS Cloud Benchmarks
  3. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  4. AMD OpenCL Performance With AM1 Kabini APUs
Latest Linux News
  1. Linux Foundation Shares More Details Of LinuxCon Chicago
  2. Cross-Desktop Collaboration During FreeDesktop Summit 2014
  3. EmScripten Merges Its Speedy "Fastcomp" Backend
  4. Nuclear Dawn Update Has Full Linux Support
  5. Oracle Linux 6.5 vs. Oracle Linux 7.0 Beta Benchmarks
  6. Easter Yields The Linux 3.15-rc2 Kernel Release
  7. The Most Amazing OpenGL Tech Demo In 64kb
  8. Packard Bell LM85 Now Supported By Coreboot
  9. AmazonBasics External USB 2.0 DVD Writer For Linux
  10. TP-LINK TG-3468: A $12 Linux PCI-E Gigabit Network Adapter
  11. Linux 3.15 Lands Some DRM Graphics Driver Fixes
  12. AMD Is Disabling DPM Support For RV770 GPUs
Latest Forum Discussions
  1. ReactOS Working On A Community Windows OS
  2. The GNOME Foundation Is Running Short On Money
  3. Updated and Optimized Ubuntu Free Graphics Drivers
  4. Catalyst 14.3 Beta
  5. Suggestions about how to make a Radeon HD 7790 work decently?
  6. Radeon 8000M problematic on Linux?
  7. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  8. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura