New EC2 instance types

[Gustavo Niemeyer]

On Thu, Mar 8, 2012 at 15:49, Clint Byrum <clint at ubuntu.com> wrote:
> Other than the single-AMI issue, what benefit would using 64-bit on
> m1.small gain us?

Pro x86 64-bit Linux
- Extended register set
- Parameter passing in registers
- Native 64-bit arithmetics
- Enhanced virtual address space

Contra x86 64-bit Linux
- Larger memory footprint (larger binaries, 64-bit operands)
- Cache utilization

http://www.amd64.org/fileadmin/user_upload/pub/64bit_Linux-Myths_and_Facts.pdf

Enhanced virtual address space is what I care about the most, but
there are other reasons as per the document.

-- 
Gustavo Niemeyer
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-- I'm not absolutely sure of anything.