[Sugar-devel] [Dextrose] [PATCH v5 sugar] Pulsing icon delayed by 5 seconds or so SL#2080

Steven Parrish smparrish at gmail.com
Wed Oct 27 10:55:05 EDT 2010

On Tue, Oct 26, 2010 at 7:50 PM, James Cameron <quozl at laptop.org> wrote:
> On Tue, Oct 26, 2010 at 05:41:58PM +0530, Anurag Chowdhury wrote:
>> The conclusion of XO-1.5 being nearly 2.5 times faster than the XO-1
>> could be verified by comparing their hardware specifications. at
>> http://en.wikipedia.org/wiki/OLPC_XO-1  (For XO-1) and
>> http://wiki.laptop.org/go/Hardware_specification_1.5 (For XO-1.5)
> These specifications do not describe CPU or graphics performance, and so
> your conclusion "2.5 times faster" is not supported by these
> specifications.
>> Also we can see the test results of James'(quozl) at
>> http://bugs.sugarlabs.org/ticket/245 which suggests that XO-1.5 is
>> atleast twice as fast as XO-1.
> That test compared two entirely different methods of rendering the
> languages control panel section; one method used by Sugar 0.82.1 and the
> other method used Sugar 0.84.11.  So your conclusion "2.5 times faster"
> is not supported by this test either.
> http://dev.laptop.org/ticket/9325 is the best test result that I can
> remember that compares CPU and graphics performance, and the latest
> results there show XO-1 and XO-1.5 at about equal, because the bit plane
> depth has changed from 16 on XO-1 to 24 on XO-1.5 at the same time as
> the graphics subsystem became faster.  The test is less relevant to
> Sugar though, since it is (a) full screen fill, and (b) using SDL and
> pygame rather than GTK+.
> I'd like to test your change on Sugar 0.84 (not HEAD) on XO-1 and
> XO-1.5 once I can understand how to measure the performance.  It is more
> important for me that power is conserved.
> --
> James Cameron
> http://quozl.linux.org.au/
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> Sugar-devel at lists.sugarlabs.org
> http://lists.sugarlabs.org/listinfo/sugar-devel

Just an FYI I am releasing a new Dextrose today.  os4dx2 which will
soon be available on wiki.sugarlabs.org/go/Dextrose   One feature is
an updated cairo which seems to have decreased the render times.  You
might want to check it out.  I have done some local testing and it
seems much improved so might just render this a mute point.


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