The Cost of SELinux, Audit, & Kernel Debugging

    Date14 Aug 2009
    CategorySELinux
    14809
    Posted ByAnthony Pell
    When benchmarking development releases of Fedora in particular, they often end up being much slower than the final build and perform lower when compared against some of the other leading desktop distributions. As we have mentioned in previous articles, this is generally due to the debugging support enabled within the development builds of Fedora. To see just what the performance cost is, we have compared the Fedora 11 performance of the normal kernel against the kernel-debug package. Additionally, we also compared the performance when disabling SELinux and system auditing support. Our test system for this article was an ASRock NetTop ION 330, which is made up of an Intel Atom 330 dual-core CPU, an ASRock AMCP7A-ION motherboard, 2GB of DDR2 system memory, a 320GB Seagate ST9320325AS SATA 2.0 drive, and the NVIDIA GeForce 9400M ION graphics.

    Fedora 11 x86_64 was running with the Linux 2.6.29 kernel, GNOME 2.26.1, X Server 1.6.2 RC1, the NVIDIA 190.18 display driver, GCC 4.4.0, and an EXT4 file-system. Besides what we were testing in this article, all of the settings and packages were left stock. For our benchmarking we used version 2.0 of the Phoronix Test Suite.

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