x86_64 as Fedora's primary platform

John Reiser jreiser at bitwagon.com
Tue Sep 28 18:49:33 UTC 2010

On 09/28/2010 11:37 AM, drago01 wrote:
> On Tue, Sep 28, 2010 at 8:09 PM, Mike McGrath <mmcgrath at redhat.com> wrote:

>> We run 32 bit vms in Fedora Infrastructure a lot for purposes of memory
>> density, we do it based on what will be running on the host as it doesn't
>> always make sense to do so.  It's worked out very well for us.

> That's a valid case where it indeed makes sense, but I assume the
> *host* is running x86_64.

A x86_64 kernel with everything else i686 [no 64-bit apps] can be good
non-virtually, too, particularly when it avoids 32-bit PAE for more than
3.3GB of RAM.


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