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Benchmarking Oracle's Unbreakable Enterprise Kernel

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  • Benchmarking Oracle's Unbreakable Enterprise Kernel

    Phoronix: Benchmarking Oracle's Unbreakable Enterprise Kernel

    Compared to Red Hat Enterprise Linux and other "EL" derivatives, Oracle Linux has an additional feature of shipping with what they call the "Unbreakable Enterprise Kernel", a more recent and patched version of the Linux kernel over the standard Red Hat kernel. This morning we have out some new benchmarks comparing the RHEL 6.5 kernel in Oracle Linux to that of the Unbreakable Kernel...

    http://www.phoronix.com/vr.php?view=MTUzMjg

  • #2
    Incredible how they are still on a pre 3 series kernel...

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    • #3
      Originally posted by varikonniemi View Post
      Incredible how they are still on a pre 3 series kernel...
      Easy. They target essentially same segment what RH targets, but they do it cheaper by taking RH kernel and offering it cheaper with "support". RH got smarter now, by shipping an already patched kernel without detailed change log, so Oracle are stuck at guessing patches. So essentially they try to offer RH compatible kernel with some support but cheaper. But their support is rumored to suck for known reason - they aren't developers, they are thieves of free bier. So if you are smart - RH, if you r low on money - centos, if you don't need RH compatibility - Debian does it better.

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      • #4
        Originally posted by varikonniemi View Post
        Incredible how they are still on a pre 3 series kernel...
        After the 2.4 kernel series ended there werent any long term supported kernels anymore, which was a problem for enterprise linux like red hat. So red hat and others mutually decide which kernels they want to support long term (over years), the last one was 2.6.32.

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        • #5
          Originally posted by varikonniemi View Post
          Incredible how they are still on a pre 3 series kernel...
          Heh, that's nothin'. RHEL 3 is still in extended lifecycle support. The last time we had to ship a kernel for it was 2010:

          http://rhn.redhat.com/errata/RHSA-2010-0882.html

          but if something that serious arose today, we'd have to do it again. Yes, for kernel 2.4.21. Extended lifecycle support for RHEL 3 ends next year.

          We shipped a 2.6.9 kernel update for RHEL 4 just last year:

          http://rhn.redhat.com/errata/RHBA-2012-0695.html

          And RHEL 5 is still in its mainline support lifetime, we shipped kernel-2.6.18-371.1.2.el5 in October:

          https://rhn.redhat.com/errata/RHSA-2013-1449.html

          I don't know what poor sod's job it is to do a RHEL 3 kernel update if we have to, but I don't envy them. :P

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          • #6
            Originally posted by brosis View Post
            Easy. They target essentially same segment what RH targets, but they do it cheaper by taking RH kernel and offering it cheaper with "support". RH got smarter now, by shipping an already patched kernel without detailed change log, so Oracle are stuck at guessing patches. So essentially they try to offer RH compatible kernel with some support but cheaper. But their support is rumored to suck for known reason - they aren't developers, they are thieves of free bier. So if you are smart - RH, if you r low on money - centos, if you don't need RH compatibility - Debian does it better.
            Oracle does a fairly good job of dissecting Redhat's kernel patches:

            https://oss.oracle.com/projects/RedPatch/

            Redhat's obfuscation of git histories makes doing git bisect a pain for people outside of Redhat (i.e. Redhat's customers), but it does not really affect Oracle. They have the resources to disassemble Redhat's code dumps.

            With that said, What Oracle does is permitted by the licenses involved. People who do not like it probably should not be involved with OSS.

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