[sugar] Performance

[Walter Bender]

+1 to Marc's comment as well, that was posted while I was writing mine.

-walter

On Thu, Jul 24, 2008 at 7:39 AM, Walter Bender <walter.bender at gmail.com> wrote:
> I am steadfast in the opinion that stability and predictability are
> much more important goals for 8.2 than trying to make significant
> speed improvements. Also, do you know what build Miguel was basing his
> assessment on?
>
> -walter
>
> On Thu, Jul 24, 2008 at 6:16 AM, Greg Smith <gregsmitholpc at gmail.com> wrote:
>> Hi All,
>>
>> I just got word from a decision maker in Uruguay that they are very
>> concerned about "performance". They say that Sugar is slow. I'm probing
>> to get more details but I want to evaluate the options in parallel.
>>
>> Focus is on improving this in 8.2.0.
>>
>> Here are the areas I can think of:
>> - Activity launch time
>> I know we had some threads on this but I don't know where we stand. Can
>> I get an update and an evaluation of what it will take to greatly
>> improve this?
>>
>> - File/activity open
>> Can we improve this? A piece of the latency here may be due to a large
>> Journal being much slower. Can we "chunk" journal reads or otherwise
>> improve the speed of opening files? Can we speed up journal access in
>> its own GUI too?
>>
>> - File save
>> What is the bottle neck on save? Let's create a test case for this.
>>
>> - Task switching
>> I've seen some threads on this. Can someone summarize it and give me a
>> hard number to show how we have improved?
>>
>> - Activity or main GUI responsiveness to cursor
>> It seems to me that the activities are a little slow. e.g. when I try to
>> draw a line in paint, it takes a little while (maybe 100s of ms but
>> noticeable) for the line to show on the screen. Similar with cursor
>> placement in write or in the journal/home. Has anyone else noticed that?
>> Is that due to CPU cycles or screen refresh or something else?
>>
>> - Hardware
>> Can anyone evaluate how much faster it would be with twice the RAM? Is
>> the NAND slowing us down?
>>
>> This may cost us significantly if we don't show improvement. Send me
>> ideas. Any quick wins would be considered, even if they have a downside
>> in another metric.
>>
>> I'll come back with more details on their specific concerns as soon as I
>> get it.
>>
>> BTW this was raised by the kids in their blog several months ago. See
>> the first link here:
>> http://wiki.laptop.org/go/9.1.0#Unadorned_and_unedited_user_feedback
>>
>> Thanks,
>>
>> Greg S
>>
>>
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>