[IAEP] DC Photo Jam 2 - New batch of photos of SoaS running onnetbooks

[John Watlington]

On Mar 17, 2009, at 5:34 AM, Tomeu Vizoso wrote:

> On Tue, Mar 17, 2009 at 04:48, John Watlington <wad at laptop.org> wrote:
>>
>> On Mar 16, 2009, at 4:32 PM, Kathy Pusztavari wrote:
>>
>>> Adorable.  You indeed picked the best of the bunch.
>>>
>>> This may have been answered somewhere else but I'm wondering if
>>> SoaS is faster on other processors than on the XO1.  I find the XO
>>> to be terribly slow.  Has it been tested on the Classmate 3 - if
>>> so, is it fast?
>>
>> I would expect it to be faster on other processors.
>
> I don't think the processor is the biggest factor. In my profiling, I
> have seen bigger impact from jffs2/nand, the graphics subsystem and
> the lack of swap.

> If you run Soas-1 on a sd card with some swap space, you will see how
> the XO feels much faster.

The difference here is that read access to data/programs on an SD  
card is about
twice as fast as JFFS2 (and incurs little processor overhead, whereas  
JFFS2
tends to occupy the processor 100%), and write access is about 15  
times faster
than JFFS2.   I doubt the speedup is due to the presence of swap.

> Regards,
>
> Tomeu
>
>> Please remember that the XO uses the processor that gave OLPC
>> the most performance/power available 1.5 years ago.   Technology
>> has changed, and we are refreshing the XO to provide more
>> performance at the same power level.    Other netbooks are
>> power hogs compared to the XO!
>>
>> This probably doesn't matter to you, but in many OLPC deployments,
>> the amount of power consumed by the laptop is inversely related to
>> the amount of time a student can use their laptop per week.
>>
>> Still, as Marvin Minsky reminded me the other day, we used to have
>> much more responsive UIs running on processors with less than a
>> tenth the processing power...
>>
>> wad
>>
>>> -Kathy
>>>
>>> From: iaep-bounces at lists.sugarlabs.org [mailto:iaep-
>>> bounces at lists.sugarlabs.org] On Behalf Of Mike Lee
>>> Sent: Sunday, March 15, 2009 6:40 PM
>>> To: iaep; Marketing at lists.sugarlabs.org; Sugar Devel; Christian
>>> Marc Schmidt
>>> Cc: Christoph Derndorfer; wayan
>>> Subject: [IAEP] DC Photo Jam 2 - New batch of photos of SoaS
>>> running onnetbooks
>>>
>>> Following up on a request from Walter and Christian a couple weeks
>>> ago, I finally got a photo session going this evening to capture
>>> some shots of SoaS running on an Asus EeePC 701 and Intel Classmate
>>> 2--complete with child! An added bonus was having Sasche Silbe come
>>> up on Chat on the Classmate 2 while I was shooting, so I was able
>>> to cache some colorful Chat lines. The images are high resolution,
>>> reproduction quality and set to CC. If you have any problems
>>> retrieving from Flickr, let me know. If you are not a contact of
>>> mine, I will have to "Friend" you to allow access to the high rez.
>>>
>>> http://www.flickr.com/photos/curiouslee/sets/72157615270454953/
>>>
>>> Mike
>>>
>>> http://www.olpclearningclub.org
>>> http://wiki.laptop.org/go/User:Mikelee
>>> _______________________________________________
>>> IAEP -- It's An Education Project (not a laptop project!)
>>> IAEP at lists.sugarlabs.org
>>> http://lists.sugarlabs.org/listinfo/iaep
>>
>> _______________________________________________
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>