FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion

From: Nick Pavlica (linicks_at_gmail.com)
Date: 01/24/05

  • Next message: Petri Helenius: "Re: FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion" 
    Date: Mon, 24 Jan 2005 14:59:55 -0700
To: freebsd-questions@freebsd.org, freebsd-performance@freebsd.org

    All,
      I would like to start addressing some of the feedback that I have
    been given. I started this discussion because I felt that it was
    important to share the information I discovered in my testing. I also
    want to reiterate my earlier statement that this is not an X vs. X
    discussion, but an attempt to better understand the results, and
    hopefully look at ways of improving the results I had with FreeBSD
    5.x. I'm also looking forward to seeing the improvements to the 5.x
    branch as it matures. I want to make it very clear that this is NOT A
    "Religious/Engineering War", please don't try to turn it into one.

    That said, lets move on to something more productive. I installed
    both operating systems using as many default options as possible and
    updated them with all of the latest patches. I was logged in via SSH
    from my workstation while running the tests. I didn't have X, running
    on any of the installations because it wasn't need. CPU and RAM
    utilization wasn't an issue during any of the tests, but the disk I/O
    performance was dramatically different. Please keep in mind that I
    ran these tests over and over to see if I had consistent results. I
    even did the same tests on other pieces of equipment not listed in my
    notes that yielded the same results time and time again. Some have
    confirmed that they have had similar results in there testing using
    other testing tools and methods. This makes me wounder why the gap is
    so large, and how it can be improved?

    I think that it would be beneficial to have others in this group do
    similar testing and post there results. This may help those that are
    working on the OS itself to find trouble areas, and ways to improve
    them. It may also help clarify many of the response questions because
    you will be able to completely control the testing environment. I
    look forward to seeing the testing results, and any good feedback that
    helps identify specific tuning options, or bugs that need to be
    addressed.

    Thanks!
    --Nick Pavlica
    --Laramie, WY
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  • Next message: Petri Helenius: "Re: FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion"

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