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Re: comps discussion at fudcon and the future



2009/1/16 Jesse Keating <jkeating redhat com>:
> On Fri, 2009-01-16 at 11:59 -0600, Matthew Woehlke wrote:
>> Yes, that's better :-). That said, why on earth would you want to run
>> 32-bit processes on a 64-bit OS when 64-bit flavors are available?
>
> You're running on a platform that isn't stooopid.  Only on x86 do x86_64
> processes get "faster" due to access to more CPU registers.  But it
> comes with a cost of much higher memory consumption.

Note this isn't inherently true, if you're running managed code, a VM
can do some interesting tricks:

http://blogs.sun.com/nike/entry/compressed_object_pointers_in_hotspot


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