XO battery/performance

Samuel Greenfeld greenfeld at laptop.org
Fri Jun 1 21:12:39 EDT 2012

On Fri, Jun 1, 2012 at 8:07 PM, Richard A. Smith <richard at laptop.org> wrote:

> On 05/30/2012 03:34 AM, Yioryos Asprobounitis wrote:
>  Most of the test had empty values but the informative ones (below) show
>> that the XO-1.5 is better in basic integer operations and memory bandwidth
>> while the XO-1.75 is better in float and double operations as well as in
>> memory latency.
>> I'm not sure how much this means for real life usage :-/
> I'm very suspect of this measurement.  The 1.5 has a hardware floating
> point unit and the 1.75 is still using soft-float.  Its extremely unlikely
> that the floating point performance on 1.75 is better than the 1.5.

Hard FP status depends on if Yioryos is running 11.3.1 or 12.1.0.  Since he
said "os10" by today's date I'm presuming 12.1.0.

The Fedora 17 builds should be hard fp (armv7hl).  The Fedora 14-based
11.3.1 builds are not (armv5tel / armv7l kernel).
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