FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued
Discussion
Petri Helenius
pete at he.iki.fi
Mon Jan 24 14:08:55 PST 2005
Are you sure you aren't comparing filesystems with different mount
options? Async comes to mind first.
Pete
Nick Pavlica wrote:
>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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>
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