bsd i386 on amd64

David O'Brien obrien at
Fri Jan 21 16:13:22 PST 2005

On Fri, Jan 21, 2005 at 04:06:16PM -0800, Jeff Behl wrote:
> i have a dual proc 3gHz AMD Opteron box

Impossible. :-)  The fastest Opteron right now is 2.5 GHz.

> that i want to run java on, so 
> it looks like i have to use the i386 build (any news on the jdk coming 
> to AMD?).

You probably want to use the Linux 'i386' JDK.

> from what i've gathered, this should not be a problem and 
> performance should be at least par compared to to running on a Xeon.  is 
> this true?  i even seem to remember hearing rumor that the Opteron could 
> even run i386 code faster, mHz to mHz, than a Xeon?

An Opteron runs all code faster MHz to MHz compared to Xeon.  Opteron
has a shorter pipeline and thus can do more work per cycle.  Xeon has a
very deep pipeline and thus can be clocked higher and must be clocked
higher to get the same performance.

-- David  (obrien at

More information about the freebsd-amd64 mailing list