AMI megaraid performance (was: RE: Dell release of Redhat 7.2)

Arjan van de Ven arjanv at
Fri Nov 9 13:27:01 CST 2001

> > The 2.4.9-12 kernel is the RedHat kernel that was released as
> > a security
> > update.
> > The 2.4.14 kernel is the linus kernel. The filesystem is XFS
> > on both versions.

That is NOT a Red Hat kernel, if you are using XFS. It's an SGI XFS
which is versioned by SGI to resemble the version of the Red Hat kernel.
it has a different VM and has several other things changed; it's
therefore incorrect 
to use SGI XFS's kernel for performance measurement and then attributing
that to the 
real Red Hat Linux kernel.

I know SGI often tries to project the appearance of being the Red Hat
Linux kernel
so that people think they benefit from Red Hat's testing and bugfixes;
however this is a false
use of the Red Hat brand. (The changes made by SGI to the Red Hat Linux
kernel codebase,
such as using known broken compilers, basically invalidate all testing). 

   Arjan van de Ven

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