[Sugar-devel] Web activity example that uses html5 canvas

[Gary Martin]

Hey Manuel,

On 11 May 2013, at 00:47, Manuel Quiñones <manuq at laptop.org> wrote:

> Oh, we should release it then.  Can you, Gary?

Yes but need to fix the 'drag hands' bugs – can't have it reading out occasional incorrect times to kids due to lack of precision/rounding errors ;) Lets see if I can make progress this weekend and make a release.

Regards,
--Gary

> 2013/5/10 James Cameron <quozl at laptop.org>:
>> On Wed, May 01, 2013 at 10:55:51AM +1000, James Cameron wrote:
>>> Summary: this Clock activity consumes significantly less CPU on XO-4
>>> and XO-1 when implemented in Javascript.
>> 
>> Myth busted.  See new results in context below.
>> 
>>> On Tue, Apr 30, 2013 at 08:42:18PM -0300, Manuel Qui?ones wrote:
>>>> 2013/4/30 James Cameron <quozl at laptop.org>:
>>>>> On Tue, Apr 30, 2013 at 08:58:50AM -0300, Manuel Qui?ones wrote:
>>>>>> Should work on other browsers now:
>>>>>> 
>>>>>> http://manuq.github.io/clockjs/
>>>>> 
>>>>> Agreed, works well, reasonably low CPU utilisation.  Thanks.
>>>> 
>>>> Excellent.  Thanks for checking the CPU consumption.
>>> 
>>> Here's a more detailed check.  Method is to run only the activity
>>> under test, and use the serial port to run the Linux top command
>>> configured for a 30 second sample time.
>>> 
>>> --
>>> 
>>> On XO-4 using 13.1.0:
>>> 
>>> - using Javascript, the Browse-149 process consumes 7.5% CPU, and the
>>>  X process 3.2% CPU.  Total of 10.7% CPU.
>>> 
>>> - not using Javascript, the Clock-12 process consumes 2.7% CPU, and
>>>  the X process 13.2% CPU.  Total of 15.9% CPU.
>> 
>> Clock-12.5 process consumes 0.6%, and the X process 2.0%, a total of
>> 2.6%.
>> 
>>> --
>>> 
>>> On XO-1 using 13.2.0, build 32004o0,
>>> 
>>> - using Javascript, the Browse-149.2 process consumes 9.8%, the X
>>>  process 7.4%, a total of 17.2%,
>>> 
>>> - not using Javascript, the Clock-12 process consumes 10.4% and X
>>>  process consumes 18.4%, a total of 30.8%.
>> 
>> Clock-12.5 process consumes 1.5%, and the X process 3.6%, a total of
>> 5.1%.
>> 
>>> 
>>> --
>>> 
>>> On XO-1 using 11.3.0, build 883,
>>> 
>>> - using Javascript, the Browse 129.1 does not render the script,
>>> 
>>> - not using Javascript, the Clock-6 consumes 7.0%, and X consumed
>>>  9.0%, a total of 16%.
>> 
>> Test not repeated.
>> 
>> --
>> James Cameron
>> http://quozl.linux.org.au/
> 
> 
> 
> -- 
> .. manuq ..