jonas@cyberspace.org wrote:

> Hello:
> I have installed the same Oracle version (10.x) on a Windows 2003
> Server and on a Linux RHAS 3. I have created the same database and run
> some querys. The hardware and the data are the same and in Linux I have
> set the recommended kernel parameters. The W2K3 filesystem is NTFS, and
> the Linux FS is ext3. They are default installations.
> The RHAS is three times slower than the W2K3. Why? What can I do to
> improve the Linux performance?
>
> Thanks.

In every benchmark I have ever performed RHAS 3 screams past any version
of Windows. So I am left wondering what you've done wrong.

Did you apply the recommended patches to RHAS? Replace the compiler
before installing the Oracle binaries?

But one possibility is the chip set. Intel, recently, has been burning
Windows specific optimizations into their silicon which makes Windows
faster than Linux. Move to an AMD chip and that isn't the case and is
part of the reason AMD is doing so much better in Oracle shops.
--
Daniel A. Morgan
University of Washington
damorgan@x.washington.edu
(replace 'x' with 'u' to respond)